HYDROLOGIC DATA FOR URBAN STUDIES IN THE AUSTIN, …pubs.usgs.gov/of/1985/0172/report.pdfJ. D....
Transcript of HYDROLOGIC DATA FOR URBAN STUDIES IN THE AUSTIN, …pubs.usgs.gov/of/1985/0172/report.pdfJ. D....
HYDROLOGIC DATA FOR URBAN STUDIES IN THE
AUSTIN, TEXAS, METROPOLITAN AREA, 1983
By J.D. Gordon, D.L. Pate, and M.E. Dorsey
U.S. GEOLOGICAL SURVEY Open-File Report 85-172
Prepared in cooperation with theCITY OF AUSTIN and theTEXAS DEPARTMENT OF WATER RESOURCES
Austin, Texas
1985
UNITED STATES DEPARTMENT OF THE INTERIOR
DONALD PAUL HODEL, Secretary
GEOLOGICAL SURVEY
Dallas L. Peck, Director
For additional write to:
information Copies of this report can be purchased from:
District Chief U.S. Geological Survey 649 Federal Building 300 E. Eighth Street Austin, TX 78701
Open-File Services Section Western Distribution Branch Box 25425, Federal Center Denver, CO 80225 Telephone: (303) 234-5888
CONTENTS
Page
Introduction 7Location and description of the area 8Data-collection activities 9
Preci pi tation data 9Storm data 9Runoff data 18Surface-water-quality data 18Ground-water data 21
Selected references 26Compilation of data- 27 Colorado River basin:Colorado River below Mansfield Dam, Austin, TX 28Lake Austin at Austin, TX 30Town Lake at Austin, TX 36Colorado River at Austin, TX 42Colorado River below Austin, TX 46Bull Creek at Loop 360 near Austin, TX 48
Storm of May 19-20, 1983 51Barton Creek near Camp Craft Road, Austin, TX 52Barton Creek at Loop 360, Austin, TX 54Barton Springs at Austin, TX 56Barton Creek below Barton Springs at Austin, TX 58West Bouldin Creek at Riverside Drive, Austin, TX 59
Storm of May 10, 1983 60Shoal Creek at Northwest Park, Austin, TX 61
Storm of May 10-11, 1983 62Shoal Creek at 12th Street, Austin, TX 64
Storm of May 10-11, 1983 66Boggy Creek at U.S. Highway 183, Austin, TX 68
Storm of June 4-5, 1983 71Walnut Creek at Farm Road 1325 near Austin, TX 73Walnut Creek at Dessau Road, Austin, TX 74Ferguson Branch at Springdale Road, Austin, TX 76Little Walnut Creek at Georgian Drive, Austin, TX 77Walnut Creek at Webberville Road, Austin, TX 78
Storm of August 8, 1983 80Walnut Creek at Southern Pacific Railroad Bridge, Austin, TX 82Onion Creek near Driftwood, TX 84
Storm of May 20-21, 1983 86Onion Creek at Buda, TX 88
Storm of May 20-21, 1983 90Onion Creek at U.S. Highway 183 near Austin, TX 92Bear Creek below Farm Road 1826 near Driftwood, TX 94
Storm of May 20-21, 1983 96Bear Creek at Farm Road 1626 near Manchaca, TX 98
Storm of May 20-21, 1983 99
-3-
CONTENTS Continued
Page
Colorado River basin: Continued
Little Bear Creek at Farm Road 1626 near Manchaca, TX 101Storm of May 10, 1983 103
Slaughter Creek at Farm Road 1826 near Austin, TX 104 Slaughter Creek at Farm Road 2304 near Austin, TX 107 Boggy Creek (South) at Circle S Road, Austin, TX 108
Storm of May 10, 1983 109 Williamson Creek at Oak Hill, TX 111
Storm of May 20, 1983 114 Williamson Creek at Manchaca Road, Austin, TX 115
Storm of May 20, 1983 116 Williamson Creek at Jimmy Clay Road, Austin, TX 118
Storm of May 20, 1983 121
-4-
ILLUSTRATIONSPage
Figure 1. Map showing locations of surface-water hydrologic- instrument installations and surface-water- quality sampling sites in the Austin urban study area 10
2. Rainfall for the stonn of May 10, 1983 inthe Austin area 11
3. Map showing the locations of the water-quality data- collection sites on Lake Austin 19
4. Map showing the locations of the water-quality data- collection sites on Town Lake 20
5. Map showing ground-water data-collection sites inTravis County 22
6. Map showing ground-water data-collection sites inHays County 23
TABLES
Table 1. Locations of rain gages in the Austin area 122. Weighted-mean precipitation factors for drainage
basins above stations in the Austin metropolitan area 15
3. Daily and monthly rainfall summary for gages north ofthe Colorado River 123
4. Daily and monthly rainfall summary for gages south ofof the Colorado River 129
5. Storm rainfall-runoff data, 1983 water year 1356. Rainfall and runoff data for selected continuous-
record gaging stations in the Austin urban study area, 1983 water year 139
7. Peak discharges associated with water-quality samplescollected during storms 140
8. Records of wells, test holes, and springs in the Austin urban study area,Travis County 143 Hays County 145
9. Water-quality data from wells in the Austin urban study area, 1983Travi s County 146 Hays County 150
10. Monthly water-level measurements of observation wellsin the Austin urban study area, 1983 water year 153
-5-
METRIC CONVERSIONS
The inch-pound units of measurements used in this report may be con verted to metric units by using the following conversion factors:
Multiply
inch
foot
mile
square mile (mi 2)
cubic foot per second
By
25.4
.3048
1.609
2.590
.02832
To obtain
mil li meter
meter
kilometer
square kilometer
cubic meter per second(ft 3/s
foot per mile (ft/mi)
acre-foot
.189
1233
.001233
meter per kilometer
cubic meter
cubic hectometer
-6-
HYDROLOGIC DATA FOR URBAN STUDIES IN THE
AUSTIN, TEXAS, METROPOLITAN AREA
1983
By
J. D. Gordon, D. L. Pate, M. E. Dorsey U.S. Geological Survey
INTRODUCTION
Hydrologic investigations of urban watersheds in Texas were begun by the U.S. Geological Survey in 1954. Studies are now in progress in Austin, and Houston. Studies have been completed in the Dallas, Fort Worth, and San Antonio areas.
The Geological Survey, in cooperation with the Texas Department of Water Reources, began hydrologic studies in the Austin urban area in 1954. In cooperation with the city of Austin, the program was expanded in 1975 to include additional streamflow and rainfall gaging stations, and the collection of surface water-quality data. In 1978, the program was expanded to include a ground-water resources study of the South Austin metropolitan area in the Balcones Fault Zone.
The objectives of the Austin urban hydrology study are as follows:
1. To determine, on the basis of historical data and hydrologic analyses, the magnitude and frequency of flood peaks and flood volume.
2. To determine the effect of urban development on flood peaks and volume.
3. To determine the variations in water quality during different seasons and flow conditions in representative watersheds under various types of urban development.
4. To quantitatively appraise the ground-water resources along the Balcones Fault Zone, the effect of urbanization on the quality and quantity of recharge and discharge, and the extent of contamination in the Edwards aquifer that is in hydrologic circulation with Barton Springs.
This report presents the basic hydrologic data collected in the Austin urban area for the 1983 water year (Oct. 1, 1982 to Sept. 30, 1983).
Additional explanations of terms related to streamflow, water quality, and other hydrologic data used in this report are defined in the U.S. Geolo gical Survey annual report Water Resources Data for Texas, TX-83-3, 1983.
-7-
LOCATION AND DESCRIPTION OF THE AREA
The Austin study area is about 80 miles northeast of San Antonio and about 160 miles northwest of Houston. The study area extends in an eastward direction from the Hill Country at the eastern edge of the Edwards Plateau across the Balcones Fault Escarpment to the Blackland Prairie of Texas. The land surface decreases in altitude from about 1,100 feet above mean sea level in the northwest to about 420 feet above mean sea level in the southeast.
Slopes generally range from 2 to 15 percent; slopes greater than 5 percent are present along the eastern edge of the Edwards Plateau, average about 5 percent within the Balcones Escarpment, and are less than 5 percent east of the escarpment and along the flood plain and alluvial terraces of the Colorado River and its tributaries.
Soils overlying the hard limestone in the western half of the study area are in general poorly developed thin calcareous clays, clay loams, and stony clays. Bedrock is locally exposed. Soils on the soft limestones and shales of the Balcones Fault Zone are generally dark brown calcareous clays, clay loams, or silty clay loams 6 inches or more thick. Soils on the shaly forma tion in the eastern part of the area are dark gray to olive calcareous clays and clay loams, 12 inches or more thick. Soils on the flood plain and ter races of the Colorado River and its tributaries are dark gray to red-brown, calcareous to noncalcareous, sandy loams, silty clay loams, clay loams, and gravelly sands 12 inches or more thick.
Detailed descriptions of the soils in the Austin urban study area can be found in Soil Survey of Travis County, U.S. Dept. of Agriculture, 1974. Additional geologic information of the Austin urban study area can be found in publications by the University of Texas Bureau of Economic Geology. A list of some of these geologic reports is given in the section "Selected references".
The major streams in the study area are Onion Creek, Barton Creek, Walnut Creek, Bull Creek, Boggy Creek, Shoal Creek, Williamson Creek, Slaughter Creek, Bear Creek, and Waller Creek. All streams in the area are within the Colorado River basin. Throughout the year, low flow for some of the smaller streams in the predominantly urban areas is partly sustained by return flow from indus trial and residential users; during the summer months the low flow is partly sustained by drainage from municipal and private swimming pools.
The climate of the Austin urban area is characterized by short mild winters, long moderately hot summers, moderately high humidity, and prevailing southerly winds. Records of the National Weather Service show that the mean annual temperature (based on the period 1941-70) is 70.6°F; the mean maximum temper ature for July is 95°F; and the mean minimum temperature for January is 41°F. The average growing season is about 270 days.
The average rainfall (based on the period 1951-80) is 31.50 inches and is generally well distributed throughout the year; however, individual storms may cause flooding in any season. The major storms usually occur during the months of April-May and September-October.
-8-
DATA COLLECTION ACTIVITIES
The drainage basins and locations of hydrologic-instrument installations and surface-water-quality sampling sites in the Austin urban study area are shown on figure 1. The locations of data-collection sites for Lake Austin, Town Lake, and the ground-water are shown on figures 2-6.
Precipitation Data
Precipitation data are based on 25 recording rain gages. The gages are distributed throughout the drainage basins to measure total precipitation and to define rainfall intensities. The locations of these rain gages are given in table 1 and shown on figure 1.
Precipitation at individual gages and weighted precipitation in each basin is given in the section "Compilation of data." Weighted-mean precipi tation factors are shown in table 2. Weighted mean precipitation for a study area is determined by the Thiessen method described by Linsley, Kohler, and Paulhus (1949). For example, the weighted-mean precipitation for the drainage basin upstream from the Bull Creek at Loop 360 streamflow-gaging station could be computed as follows: Multiply the recorded precipitation at rain-gage1-BUL by 0.57 and to that value, add the recorded precipitation at rain-gage2-BUL multiplied by 0.43.
Rainfall for the current year was unevenly distributed over the area. Individual station totals ranged from 36.87 inches at gage 2-SHL in the Shoal Creek basin to 46.81 inches at gage 2-WMS in the Williamson Creek basin. The mean water-year total of all rain gages is 41.65 inches as compared with the 30-year average (1951-80) of 31.50 inches at the Austin Municipal Airport rain gage which is operated by the National Weather Service. Daily and monthly precipitation data at individual gages in the study area are given in tables 3 and 4 at the end of this report.
Storm Data
Few storms of wide distubution produced rainfall totals of over 2 inches during the year. The most significant storm of the year occurred on May 19-21. This two-day storm produced rainfall totals ranging from 0.37 inche to 3.31 inches. Wide spread showers also fell on the entire study area on August 8. This storm produced rainfall totals ranging from 0.11 inche to 3.35 inches.
Storms of May 10, 19 and 21, June 4-5, and August 8 were used for analysis. Storms were selected for analyses based on rainfall distribution, discharge magnitude, and quality of recorded data. A summary of storm rainfall-runoff data is shown in table 5 at the end of this report. The areal distribution of rainfall totals for the May 10 storm for the entire Austin area is shown in figure 2.
A report entitled "Techniques for estimating the magnitude and frequency of floods in the Austin, Texas, metropolitan area" is currently (1984) being written This report presents an analysis of all strom data gathered in the Austin area along with equations for estimating the magnitude and frequency of floods in this area.
-9-
EX
PLA
NA
TIO
N
ST
RE
AM
FLO
W-G
AG
ING
ST
AT
ION
FLO
OD
-HY
DR
OG
RA
PH
P
AR
TIA
L-
RE
CO
RD
S
TA
TIO
N
WA
TE
R-Q
UA
LIT
Y S
AM
PLI
NG
S
ITE
R
EC
OR
DIN
G
RA
IN G
AG
E
No
te:
For
mor
e de
taile
d m
ap o
f ea
ch g
aged
ba
sin
see
figur
es 6
-15
Fig
ure
1
.-
Lo
cati
on
s of
s
urf
ac
e-w
are
r h
yd
rolo
gic
-in
str
um
en
t in
sta
llati
on
s
and
su
rface-w
ate
r-q
uality
sa
mp
ling
s
ite
s
in
the
Au
stin
u
rban
st
ud
y are
a
EX
PLA
NA
TIO
N
2
LIN
E
OF
EQ
UA
L T
OT
AL
P
RE
CIP
ITA
TIO
N--
In
terv
al
0.5
inc
h
US
6S
RE
CO
RD
ING
R
AIN
G
AG
E
Fig
ure
2.-
Rain
fall
for
the
st
orm
o
f M
ay
10,
19
83
in
th
e A
ust
in a
rea
Table 1.--Locations of rain gages in the Austin area
Rain gage Location
1-BUL Lat 30°25'23", long 97°48'41", at Jack Rainer residence, 1.1 miles west of the intersection of Spicewood Springs Road and gravel dirt road, which starts 800 ft north of Oak Grove Church on Spicewood Springs Road. Elevation, 775 ft (approximate).
2-BUL Lat 30°23'51", long 97°46'42", on Dr. Lloyd A. Doggett property, 200 ft north of the center!ine of Spicewood Springs Road at a point 600 ft northwest of the intersection of Spicewood Springs and United iff Roads (the northernmost intersection where two roads cross twice). Elevation, 650 ft (approximate).
1-BAR Lat 30°14'37", long 98°01'17", 25 ft north of centerline ofFitzhugh Road at Mr. Ben Crumley's residence, 4.9 miles west of the intersection of U.S. Hwy. 290 and Fitzhugh Road. Elevation, 1,058 ft (approximate).
2-BAR Lat 30°16'24", long 97 050'55", at Lost Creek Country Club, 150 ft northwest of maintenance building, 1.7 miles southwest of inter section of Lost Creek Blvd. and Loop 360. Elevation, 638 ft (approximate).
3-BAR Lat 30°17'46", long 97°55'31", at Barton Creek at Hwy. 71 stream- flow gaging station, 5.8 miles northwest of Oak Hill. Elevation, 781 ft (approximate).
1-BOL Lat 30°14'32", long 97°46'20", at rear of Mr. Morris Kieke's prop erty at 2509 Thorton Road, 0.4 mi southwest of the intersection of Oltorf Street and Thorton Road. Elevation, 570 ft (approxi mate).
1-SHL Lat 30°23'09", long 97°43'55", at Balcones Research Center about 150 ft west and 350 ft south of Civil Engineering Structures Research building, 5,000 ft northwest of intersection at U.S. Hwy. 183 and Farm Road 1352. Elevation, 763 ft (approximate).
-12-
Table 1.--Locations of rain gages in the Austin area Continued
Rain gage Location
2-SHL Lat 30°20'50", long 97°44'41", at Shoal Creek at Northwest Park streamflow gaging station, 400 ft upstream from Shoal Creek Blvd. bridge, 0.5 mile west of the intersection of Burnet Road and Justin Lane. Elevation, 671 ft (approximate).
1-BOG Lat 30°17'31", long 97 041'54", 50 ft behind National WeatherService building at 3724 Manor Road. Elevation, 630 ft (approxi mate).
1-WLN Lat 30°25'18", long 97°43'42", at Billie Harrel's residence, 200 ft east of Dorsett Road, 0.5 mile north of the intersection of Duval and Dorsett Roads. Elevation, 835 ft (approximate).
2-WLN Lat 30°25'48", long 97°40'49", at Turbine West Supply Company at the intersection of Hydro and Turbine Streets, 0.7 mile northwest of the Intersection of Interstate Highway 35 and Howard Lane. Elevation, 790 ft (approximate).
3-WLN Lat 30°20'34", long 97°39'52", at Ferguson Lane at Loredo Manu facturing Company, 0.9 mile northwest at the intersection of Ferguson Lane and Springdale Road. Elevation, 595 ft (approxi mate).
4-WLN Lat 30°21'39", long 97°4r49", at Mollie Barrington School on Cooper Drive, 0.1 mile east of the intersection of Lamar Blvd. and Cooper Drive. Elevation, 690 ft (approximate).
5-WLN Lat 30°20'09", long 97°41'03", at entrance road to the Showtown Drive-In Theater, 0.25 mile north of the intersection of Cameron Road and U.S. Hwy. 183. Elevation, 664 ft (approximate).
1-ON Lat 30°08'57", long 98°03"23", at Bullard Ranch, 2.7 miles north west of Driftwood on FM 150, on the north side of road in fenceline. Elevation, 1,060 ft (approximate).
2-ON Lat 30°03'56", long 97°56'38", at Mrs. Hoskins 1 Ranch, 5.3 miles southeast of Driftwood and 3.0 miles northeast of junction of FM 150 and FM 3237 and 2.5 miles south of Farm Road 967. Elevation, 885 ft (approximate).
-13-
Table 1. Locations of rain gages in the Austin area Continued
Rain gage Location
1-BER Lat 30011'08", long 97°58'11", at Ms. Guyn's residence on NuttyBrown Road, 1.6 mile south of U.S. Hwy. 290. Gage located left of driveway to house. Elevation, 1,067 ft (approximate).
2-BER Lat 30°09'17", long 97°54'20", at Spiller Ranch, 4.6 miles north west of the Marbridge School and FM 1626. Gage location on right of ranch road just before where ranch barns are located. Eleva tion, 855 ft (approximate).
1-LBR Lat 30°06'01", long 97°55'22", approximately 300 ft northwest of main ranch house at the Rutherford Ranch on FM 967, 4.8 miles west of Buda. Elevation, 875 ft (approximate).
1-SLA Lat 30°13'10", long 97°56'09", at the entrance of Mrs. 0. D.Miller's property on Derecho Road, 0.8 mile south of the inter section Derecho Road and U.S. Hwy. 290. Elevation, 1,055 ft (approximate).
2-SLA Lat 37°10'34", long 97°52'06", at the entrance of the Circle CRanch on Wyldwood Road, 0.8 mile from the intersection of Wyldwood Road and Brodie Lane, and 5.2 miles southwest of the intersec tion of Brodie Lane and U.S. Hwy. 290. Elevation, 773 ft (approxi mate).
1-BGS Lat 30°iri8", long 97°48'26", at the Brown School about 50 ftsouth and 200 ft west of the administration building and 20 ft of the fence line, about 3,000 ft northwest of the intersection of Manchaca Road and Dittmar Lane. Elevation, 725 ft (approximate).
1-WMS Lat 30°13'42", long 97°52'00", at the entrance of Mr. Welty E. McCullough's property at 7101 Convict Hill Road, Oak Hill, 0.4 mile south of the intersection of Convict Hill Road and U.S. Hwy. 290. Elevation, 835 ft (approximate).
2-WMS Lat 30°12'25" long 97°48'01", at the rear of Mr. Wilson's property at 1809 Stanley Avenue, 0.3 mile east of the intersection of Berkeley Avenue and Manchaca Road. Elevation, 700 ft (approxi mate).
3-WMS Lat 30°14'48", long 97°53'14", at entrance to Country Aire mobile home park on Hwy. 71, approximately 1.0 mile northwest of the intersection of U.S. Hwy. 290 and State Hwy. 71 near Oak Hill. Elevation, 890 ft (approximate).
-14-
Table 2.--Weighted-mean precipitation factors for drainage basins above stations in the Austin metropolitan area
Station number
08154700
08155260
08155300
08155550
08156700
08156800
08158050
08158100
08158200
08158300
08158380
Station name
(abbreviated)
Bull Creek at Loop 360
Barton Creek near Camp Crest Road
Barton Creek at Loop 360
West Bouldin Creek at Riverside Drive
Shoal Creek at Northwest Park
Shoal Creek at 12th Street
Boggy Creek at U.S. Highway 183
Walnut Creek at Farm Road 1325
Walnut Creek at Dessau Road
Ferguson Branch at Springdale Road
Little Walnut Creek at Georgian Drive
Rain gage V
1-BUL 2-BUL
1-BAR 2-BAR 3-BAR
1-BAR 2-BAR 3-BAR
1-BOL
1-SHL 2-SHL
1-SHL 2-SHL
1-BOG
1-WLN
1-WLN 2-WLN
3-WLN
1-SHL 4-WLN
Weighted-mean precipitation factor 2_/
0.57 .43
.63
.16
.21
.59
.15
.26
1.00
.45
.55
.24
.76
1.00
1.00
.51
.49
1.00
.36
.64
See foot notes at end of table.
-15-
Table 2.--Weighted-mean precipitation factors for drainage basins above stations in the Austin metropolitan area Continued
Station number
08158600
08158700
0815800
08158810
08158820
08158825
08158840
08158860
08158880
08158920
08158930
Station name
(abbreviated)
Walnut Creek at Webberville Road
Onion Creek near Driftwood
Onion Creek at Buda
Bear Creek below Farm Road 1826
Bear Creek at Farm Road 1626
Little Bear Creek at Farm Road 1626
Slaughter Creek at Farm Road 1826
Slaughter Creek at Farm Road 2304
Boggy Creek (South) at Circle S Road
Williamson Creek at Oak Hill
Williamson Creek at Manchaca Road
Rain gage I/
1-WLN 2-WLN 3-WLN 4-WLN 5-WLN
1-ON
1-ON 2-ON
1-BER
1-BER 2-BER
1-LBR
1-SLA
1-SLA 2-SLA
1-BGS
1-WMS 3-WMS
1-WMS 2-WMS 3-WMS
Weighted-mean precipitation factor 2/
0.25 .21 .28 .15 .11
1.00
.73
.27
1.00
.66
.34
1.00
1.00
.48
.52
1.00
.16
.84
.46
.25
.29
See footnotes at end of table.
-16-
Table 2. Weighted-mean precipitation factors for drainage basins above stations in the Austin metropolitan area Continued
Station number
Station name
(abbreviated)
Rain gage I/
Weighted-'nean precipitation factor 21
08158970 Williamson Creek at Jimmy Clay Road
1-WMS2-WMS3-WMS
0.31 .49 .20
JY Rain gage designations are: BUL-Bull Creek; BAR-Barton Creek; BOL-Bouldin Creek; SHL- Shoal Creek; BOG-Boggy Creek; WLN-Walnut Creek; ON-Onion Creek; BER-Bear Creek; LBR- Little Bear Creek; StA-Slaughter Creek; BGS-Boggy Creek (South); and WMS-Williamson Creek. See locations of rain gages on figure 1.
2J See section on "Precipitation Data" for explanation of use of weighted-mean preci pitation factors
-17-
Runoff Data
Runoff data are based on discharge measurements and stage records at 13 continuous-record streamflow stations and 11 flood-hydrograph partial-record streamflow gaging stations. Streamflow data for continuous-record gaging stations, and for flood-hydrograph partial-record stations for the 1983 water year are presented in downstream order in the section "Compilation of data."
Rainfall and runoff for the 1983 water year for the continous-record gaging stations in the Austin urban study area are summarized in table 6 at the end of this report. Runoff varied from 0.70 inch for the Onion Creek at Buda gage, to 7.25 inches for the Boggy Creek at Highway 183 gage, which was 2 percent and 19 percent of the basins annual weighted-mean rainfall, respectively. Detailed storm rainfall and runoff records for each gaging station are shown in the section "Compilation of data."
Surface-Water-Quality Data
Water-quality data were collected at 20 streamflow locations during the 1983 water year. The locations of the streamflow water-quality data-collection sites are shown on figure 1. Water-quality samples are collected and analyzed during various flow and seasonal conditions so that the variations in the water quality may be documented for future analysis. Five of these water-quality data- collection sites are equipped with automated samplers that collect discrete samples during storms. These five automated samplers are located at the gaging stations; Barton Creek at Loop 360, Shoal Creek at 12th Street, Boggy Creek at Highway 183, Bull Creek at Loop 360, and Williamson Creek at Oak Hill. The peak discharges associated with the water-quality samples collected during storms at all the gaging stations are shown in table 7.
Analyses for these sites include nutrients (ammonia, nitrogen, organic nitrogen, nitrite nitrogen, and phosphorus), physical organics and inorganics (specific conductance, pH, temperature, color, turbidity, dissolved oxygen, suspended and dissolved solids, biochemical oxygen demand, and total organic carbon), indicator bacteria (total coliform, fecal coliform, and fecal strepto cocci), and inorganic-chemical constituents (calcium, magnesium, sodium, potas sium, alkalinity, sulfate, chloride, fluoride, and silica). Some years, analyses are also done for 12 selected trace elements (arsenic, barium, cadmium, chromium, copper, iron, lead, nanganese, mercury, selenium, silver, and zinc), 26 insecticides and herbicides, and radiochemical analyses.
Beginning in 1984, a report will be prepared that will include water-quality data for the five sites equipped with automatic samplers. The water-quality characteristics for those five watersheds will be determined and interpretations relating water-quality characteristics with land use will be made.
Water-quality data were also collected at eight sites on Lake Austin and at 11 sites on Town Lake. The locations of these sites are shown on figures 3 and 4 respectively, and the analyses of these samples are given in the "Compi lation of data" section in this report.
-18-
CD I
2 M
ILE
S I
Bas
e fr
om T
exas
co
unty
hi
ghw
ay m
ap
EX
PLA
NA
TIO
N
AR
A
c A
L
Res
ervo
ir t
rave
rse
and
data
-co
l lec
tion
site
s
Str
eam
cha
nnel
AU
ST
IN
Fig
ure
3 .-
Locations o
f
the
w
a t
e r-q
u a
I i t
y
data
-collection
site
s
on
Lake
Au
stin
Bas
e fr
om
Gen
eral
H
ighw
ay
map
of
Te
xas
30°I
5
97
°45
EX
PL
AN
AT
ION
Res
ervo
ir tr
aver
se a
nd
da
ta-c
olle
ctio
n
site
30°I
5
Fig
ure
4
.- L
ocati
on
s o
f th
e
wa
ter-
qu
ali
ty
data
-co
llecti
on
s
ite
s
on
T
ow
n
lak
e
Ground-Water Data
Ground-water data for the Austin urban study area consist of well and spring inventories, water-quality sampling, and water-level measurements. These data were collected from 1978 to 1983, when all ground-water collection activities were discontinued. The locations of all these ground-water sites in Travis and Hays Counties are shown in figures 5 and 6 respectively. The descriptions and characteristics of the wells and springs inventoried by the U.S. Geological Survey and water-level measurements are presented in table 8 at the end of this report. Water-quality data collected from 19 wells in Travis County and 11 wells in Hays County are presented in table 9 at the end of this report. Analyses for the ground-water samples include all the consti tuents analyzed for the surface-water samples except color, turbidity, dissolved oxygen, biochemical oxygen demand, suspended solids and total organic carbon. Monthly water-level measurements made at 24 observation wells during the 1983 water year are presented in table 10 at the the end of this report. Other ground-water data for Travis and Hays Counties are in reports by Brune (1983) and DeCook (1960).
The data are listed according to a well-numbering system which is used throughout the State, and which was developed by the Texas Department of Water Resources. The well-numbering system consists of a two-letter county- designation prefix plus a seven-digit well number. The two-letter prefix for Travis County is YD, and the prefix for Hays County is LR. Each one-degree quadrangle in the State is given a number consisting of two digits from 01 through 89. These are the first two digits of the well number. Each 1-degree quadrangle is divided into 7-1/2-minute quadrangles which are given two-digit numbers from 01 through 64. These are the third and fourth digits of the well number. Each 7-1/2-minute quadrangle is divided into 2-1/2-minute quadrangles which are given a single-digit number from 1 through 9. This is the fifth digit of the well number. Each well or spring located within a 2-1/2-minute quadrangle is given a two-digit number beginning with 01, according to the order in which it was inventoried. These are the last two digits of the numbering system.
Only the last three digits of the we11-numbering system are shown at each of the ground-water data-collection sites on figures 5 and 6; the second two digits are shown in or near the northwest corner of each 7-1/2-minute quadrangle; and the first two digits are shown by the large block numbers 57, 58, 67, or 68.
The ground-water portion of this urban-hydrology project is composed of a study of that part of the Edwards aquifer between the Colorado River and the city of Kyle. Cold and Deep Eddy Springs discharge a small portion of the aquifer, and Barton Springs discharges the remainder of the aquifer. The Edwards aquifer in this area is composed of the Edwards Limestone and George town Limestone. In order to appraise the quantity and quality of the water in this portion of the Edwards aquifer, the inflow (recharge) to the aquifer and outflow (springflow and pumpage) from the aquifer must be defined.
-21-
EX
PL
AN
AT
ION
e
WA
TE
R-L
EV
EL
M
EA
SU
RE
ME
NT
S
«
WA
TE
R
QU
ALIT
Y A
NA
LY
SE
S
WA
TE
R-L
EV
ELS
AN
D W
AT
ER
Q
UA
LIT
Y A
VA
ILA
BLE
^
SP
RIN
G
A
CO
NT
INU
OU
S
WA
TE
R-L
EV
EL R
EC
OR
DE
R
Hig
hway
s an
d pu
blic
TrQ
S
ennr
ol H
ijhw
aj
Map
Fig
ure
5.-
Gro
und-w
ate
r d
ata
-co
llect
ion
site
s in
Tra
vis
Cou
nty
30°07'30"
EXPLANATION
WATER LEVEL MEASUREMENT
® WATER QUALITY ANALYSES
WATER LEVELS AND WATER QUALITY AVAILABLE
97°52'30"
1234 MILES
Base from Texas Department of Highways and Public Transportation General Highway Map
Figure 6.-Qround-water data-collection sites in Hays County
-23-
feet of pumpage is composed of domestic usage (860 acre-feet) and livestock usage (140 acre-feet). The estimated total discharge as springflow from the aquifer was 49,700 acre-feet, of which about 46,800 acre-feet was from Barton Springs and the remaining 2,900 acre-feet was from Cold and Deep Eddy Springs.
The majority of the recharge to the aquifer occurs through faults asso ciated with the Balcones Fault Zone. These faults cross several creeks south west of Austin, and some of the flow in these creeks enters the Edwards aquifer through these faults. The six major creeks that provide the majority of the recharge are Barton, Williamson, Slaughter, Bear, Little Bear, and Onion Creeks.
Except for Little Bear Creek, studies were conducted on these creeks to determine the quantity and location of flow losses. From this study, the two points on each creek that make up the upstream and downstream border of the flow-loss zones were determined, and thus the "recharge zone" was identified. The locations, descriptions, and data for the flow-loss study are given in the report by Slade and others (1982).
In 1978, the Geological Survey and Texas Department of Water Resources began a cooperative study of the Edwards aquifer between the cities of Kyle and Belton. Belton is about 60 miles north of Austin. A report presenting the hydrologic and geologic framework of the Edwards aquifer within that study area is in preparation (Baker, E. T., and others, U.S. Geological Survey, written commun., 1984). That report presents geologic sections as well as structure and thickness maps of the aquifer. Also represented in the report are basic hydrologic findings such as the extent of water use, up to date position of water altitudes in the subsurface, and changes in those levels, the quality of water from the Edwards throughout the aquifer, and interrelation ships of streamflow with the aquifer. A report concerning the hydraulic properties of that part of the Edwards aquifer north of the Colorado River was began in 1983 (Slade, R. M. Jr., and Boettner, W. L., U.S. Geological Survey, written commun., 1984). A computer model that simulates the flow of the aqui fer will be presented in the report. The report should be completed near the end of 1984.
Three reports from the ground water part of the Austin urban-hydrology program are currently being prepared or have been completed. The first report presents the results of an intensified water-quality sampling program conducted on Barton Springs and associated Edwards aquifer by the Geological Survey from August 1981 through September 1982. Data collected were used to describe the effects of storm runoff on ground-water quality of the Edwards aquifer (Andrews and others, 1984).
The second report from the ground-water program presents the hydrogeologic frame work of the Edwards aquifer (Slade, R. M. and others, U.S. Geological Survey, written commun., 1984). Information concerning recharge, discharge, water levels, storage, and water movement is presented in the report. Also presented are water-quality data and information for recharge, ground water, and Barton Springs.
-24-
The third report concerns the hydraulic properties of the aquifer (Slade, R. M. Jr., and others, U.S. Geological Survey, written commun. 1984). Synthe sis and analysis of the hydraulic properties of the aquifer were performed using a computer simulation model of the system. Simulations of present and future water levels in the aquifer are presented in the report, which will conclude the Geological Survey study of Barton Springs and associated Edwards aquifer.
-25-
SELECTED REFERENCES
Andrews, F. L., Schertz, T. L., Slade, R. M., Jr., and Rawson, Jack, 1984,Effects of storm-water runoff on water quality of the Edwards aquifer near Austin, Texas: U.S. Geological Survey Water-Resources Investigations Report 84-4124, 33 p. (in press).
Rrune, Gunnar, and Duffin, G. L., 1983, Occurrence, availability, and quality of ground water in Travis County, Texas: Texas Department of Water Resources Report 276, 219 p.
De Cook, K. J., 1960, Geology and ground-water resources of Hays County, Texas: Texas Board of Water Engineers Bulletin 6004, 167 p.
Garner, L. E. and Young, K. P., 1976, Environmental geology of the Austinarea: An aid to urban planning: University of Texas at Austin, Bureau of Economic Geology, Report of Investigations 86, 39 p.
Linsley, R. K., Kohler, M. A., and Paulhus, J. L. H., 1949, Applied hydrology: McGraw-Hill Book Company, Inc., New York, 1949.
Rodda, P. V., Garner, L. E., and Dawe, G. L., 1979, Geologic quadrangle map No. 38: Austin west, Travis County, Texas: University of Texas at Austin, Bureau of Economic Geology.
Slade, R. M., Jr., Gaylord, J. L., Dorsey, M. E., Mitchell, R. N., and Gordon, J. G., 1982, Hydrologic data for urban studies in the Austin, Texas, metropolitan area, 1980: U.S. Geological Survey open-file report 82-506.
U.S. Department of Agriculture, 1974, Soil survey of Travis County, Texas: U.S, Department of Agriculture, Soil Conservation Service, 123 p.
U.S. Department of Commerce, National Oceanic and Atmospheric Administration Environmental Data Service, 1973, Monthly normals of temperature, preci pitation, and heating and cooling degree days, 1941-70, Texas: Clima- matography of the United States, no. 81 (by State).
U.S. Geological Survey, 1983, Water resources data for Texas, Volume 3: U.S. Geological Survey Water-Data Report, TX-83-3.
University of Texas at Austin: Bureau of Economic Geology, 1974, Geologic atlas of Texas: Austin sheet, scale 1:250,000.
-26-
COMPILATION OF DATA
-27-
COLORADO RIVER BASIN
08154510 COLORADO RIVER BELOW MANSFIELD DAM, AUSTIN, TX
LOCATION. Lat 30*23'30", long 97*54'28", Travis County, Hydrologic Unit 12090205, at the downstream side of Mansfield Dan, 12.9 ni northwest of the State Capitol at Austin, and at alie 318.0.
DRAINAGE AREA. 38,755 mi*, approximately, of which 11,403 ni 1 probably is noncontributing.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. October 1974 to current year.
GAGE. None. Daily discharge record is based on daily releases fron Lake Travis.
REMARKS. Water-discharge records fair.
COOPERATION. All records of releases were furnished by the Lower Colorado River Authority.
AVERAGE DISCHARGE. 9 years 1,585 ft»/s (1,148,000 acre-ft/yr).
EXTREMES FOR PERIOD OF RECORD.--Maxinum daily discharge, 25,300 ft'/s Apr. 17-19, 1977; no flow at times.
EXTREMES FOR CURRENT YEAR. Maximum daily discharge, 2,440 ft'/s Sept. 2; no flow at times.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINAC-FT
CAL YRWTR YR
912765381554136
.00
.00
.00
.00
.00
.00190
.00
.00569
.00
.00
.00.00.00
.00
.00
.00
.00134
411.00.00.00.00.00
4052.00131912.00
8040
.00
.00
.00
.00
.00
.00
.00
.00137
.00
.0080
134.00
127
.0083
.00
.00191
.00
.00406481
.00
.00
.00
.00163236
983852
.0075
.00
.00320
.00.00.00
.00
.00
.00
.00269
.00
.00
.00
.00198
.00763
.00
.00
.00
.00
.00
.00
.00
.00.00
2038.00 3460.0067.9
481.00
4040
1 982 TOTAL 4769801983 TOTAL 228365
112983.00
6860
.00
.00.00.00.00
.00
.00.00.00.00
.00
.00
.00381
.00
.00
.00
.00
.00
.00
.00
.00
.00.00.00
381.00.00.00.00.00
762.0024.6
381.00
1510
.00 MEAN 1307
.00 MEAN 626
.00
.00.00.00.00
.00
.00
.00
.00574
.00
.00
.00
.00.00
.00
.00
.00
.00
.00
.00
.00
.00.00.00
.00.00.00
574.0020.5
574.00
1140
.00
.00
.00100
.00
.00340237279528
374569384395387
140881409412430
426431158
.00.00
.00.00.00.00.00.00
6880.00222881.00
13650
MAX 3620 MINMAX 2440 MIN
323 1470329 142032T 1300328 1160298 1120
380 965315 925
1880 10801010 967
321 864
615 1030618 1290277 1030437 930719 961
61 3 1 040561 981607 781475 870557 433
430 .00403 195801 966782 1060
1 040 1 040
1050 10501100 10701090 11701 1 30 1 1 701170 1120 1210
19980 30668.00666 989
1880 1470277 .00
39630 60830
.00 AC-FT 946100
.00 AC-FT 453000
12501390148016301040
14601680166015401810
1600172019801530717
14601470160014401500
15301680179018001460
15901970164015501690 -
4665715551980
71792540
19201760164017101780
16901720217018601850
18402080179017701650
.0015801180987966
11001130947922
1490
790756747932864752
42373.0013672170
.0084050
1100726868
10801790
1620724
.00851735
572.00.00.00
62
618486499198198
561469
113016401520
156014801890166016401770
27447.00885
1890.00
54440
17502440184019201760
18202290199021101610
15701790170011801180
14201430122016601120
676671665794888
7901060147013501310 -
4347414492440
66586230
-28-
COLORADO RIVER BASIN
08154510 COLORADO RIVER BELOW MANSFIELD DAM, AUSTIN, TX Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD. Chemical and biochemical analyses: June 1980 to current year.
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JUN28...
AUG23...
SPE CIFICCON- PH DUCT- (STAND- TEMPER-
TIME ANCE ARD ATURE (UMHOS) UNITS) (DEC C)
OXYGEN, OXYGEN
0935
1525
DATE
JUN28...
AUG23...
HARD NESS,
NONCAR- BONATE (MG/L CAC03)
66
58
CALCIUM DIS SOLVED (MG/L AS CA)
46
43
577
580
MAGNE SIUM, DIS SOLVED (MG/L AS MG)
22
22
7.8
7.7
SODIUM, DIS SOLVED (MG/L AS NA)
37
36
15.5
17.5
SODIUMAD
SORP TION
RATIO
1.2
1.1
DIS- DEMAND, SOLVED BIO- HARD-
JEN, (PER- CHEM- NESS :S- CENT ICAL, (MG/L -VED SATUR- 5 DAY ASI/L) ATION) (MG/L) CAC03)
6.4
4.4
POTASSIUM,DIS
SOLVED(MG/LAS K)
3.8
4.1
65
47
ALKALINITYFIELD(MG/LASCAC03)
140
140
.0
.1
SULFATEDISSOLVED(MG/L
AS S04)
46
47
210
200
CHLORIDE,DISSOLVED(MG/LAS CL)
69
69
DATE
JUN28...
AUG23...
FLUO-RIDE,DIS
SOLVED(MG/LAS F)
.20
.30
SILICA,DISSOLVED(MG/LAS
SI02)
7.3
7.4
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
315
313
NITROGEN,
NITRITETOTAL(MG/LAS N)
<.020
<.020
NITROGEN,
N02+N03TOTAL(MG/LAS N)
.20
.20
NITROGEN,
AMMONIATOTAL(MG/LAS N)
<.060
<.010
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
.60
.60
PHOSPHORUS,TOTAL(MG/LAS P)
.020
.010
-29-
COLORADO RIVER BASIN
08154900 LAKE AUSTIN AT AUSTIN, TX
LOCATION. Lat 30°18'53", long 97°47 1 10", Travis County, Hydrologlc Unit 12090205, at city of Austin Waterplant No. 2 and 1.5 mi upstream from Tom Miller Dam on the Colorado River at Austin.
DRAINAGE AREA.--38.240 mi2, of which 12,880 mi2 probably is noncontributing.
PERIOD OF RECORD...Chemical, biochemical, and pesticide analyses: October 1978 to current year.
JAN05..05..05..05..05..05..,05..
AUG29..29...29..29..,29..29..,
301739097471601 LAKE AUSTIN SITE AR
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
OXYGEN , SPE- DIS- CIFIC SOLVED
SAM- CON> PH OXYGEN, (PER. PLING DUCT- (STAND- TEMPER- DIS- CENT
TIME DEPTH ANCE ARD ATURE SOLVED SATUR- DATE (FEET) (UMHOS) UNITS) (DEC C) (MG/L) ATION)
JAN 05... 1210 1.00 527 8.0 10.5 9.9 89 05... 1212 10.0 527 8.0 10.0 9.8 87 05... 1214 20.0 527 8.0 10.0 9.6 85 05... 1216 34.0 527 8.0 10.0 9.5 84
AUG 29... 1040 1.00 575 7.9 28.0 7.8 101 29... 1042 10.0 580 7.8 22.5 4.6 54 29... 1044 20.0 580 7.8 22.0 3.8 44
301739097471201 LAKE AUSTIN SITE AC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
OXYGEN, SPE- TRANS- DIS- CIFIC PAR- COLOR SOLVED
DATE
JAN05...05...05...05...05...05...05...
AUG29...29...29...29...29...29...
DATE
TIME
1130113211341136113811401142
102010221024102610281030
STREPTOCOCCIFECAL,
KF AGAR(COLS.PER
100 ML)
SAMPLINGDEPTH(FEET)
1.0010.020.030.040.050.060.0
1.0010.020.030.040.045.0
HARDNESS(MG/LAS
CAC03)
CONDUCTANCE(UMHOS)
527527527527527527527
584584584584584582
HARDNESS,NONCAR-BONATE(MG/LCAC03)
PH(STANDARD
UNITS)
8.08.08.08.08.08.08.0
7.97.77.77.77.77.7
CALCIUMDISSOLVED(MG/LAS CA)
TEMPERATURE(DEG C)
10.010.010.010.010.010.010.0
28.022.021.521.521.021.5
MAGNESIUM,DIS
SOLVED(MG/LAS MG)
ENCY(SECCHIDISK)(M)
1.90_________
1.50__..____
SODIUM,DIS
SOLVED(MG/LAS NA)
(PLATINUM-COBALTUNITS)
<1______ __<1
5.- _._<1
SODIUMAD
SORPTIONRATIO
TURBIDITY
(NTU)
2.2_____ __
4.2
3.5 _
8.5
POTASSIUM,DIS
SOLVED(MG/LAS K)
OXYGEN ,DIS
SOLVED(MG/L)
9.99.89.79.79.79.79.7
7.55.64.94.34.33.8
ALKALINITYFIELD(MG/LAS
CAC03)
(PERCENT
SATURATION)
88878686868686
976556494944
SULFATEDISSOLVED(MG/L
AS S04)
OXYGEN DEMAND, BIOCHEMICAL,5 DAY(MG/L)
.8 __ __.5
.8 __ .6
CHLORIDE,DISSOLVED(MG/LAS CL)
COLI- FORM, FECAL,0.7UM-MF(COLS./100 ML)
K5 ____ __
30 -__.
FLUO-R1DE,DIS
SOLVED(MG/LAS F)
23
28
200
200
210
210
50 47
50 47
58 47
58 47
20
20
22
22
30
30
35
36
1.0
1.0
1.1
3.5 150
3.5 150
4.2 150
1.1 4.4 150
37
37
40
48
54
54
64
66
.20
.20
.20
.20
-30-
COLORADO RIVER BASIN
LAKE AUSTIN AT AUSTIN, TX--Continued
301739097471201 LAKE AUSTIN SITE AC--Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN05...05...05...05...05...05...05...
AUG29...29...29...29...29...29...
SILICA,DISSOLVED(MG/LAS
SI02)
9.4 _
9.3
8.2 _
7.9
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
291 __
291
311 __
322
SOLIDS,RESIDUEAT 105DEG. C,
SUSPENDED
(MG/L)
<1--__---- 11
8__----__23
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
<1--__ ----<1
7------__14
NITROGEN,
NITRATETOTAL(MG/LAS N)
._ --
-- __
.08
NITROGEN,
NITRITETOTAL(MG/LAS N)
<.020--__
<.020
<.020
<.020
<.020 __
.020
NITROGEN,
N02+N03TOTAL(MG/LAS N)
<. 10--
<. 10 --
<. 10
<. 10
.10 -_
.10
NITROGEN,
AMMONIATOTAL(MG/LAS N)
<.060--__
.090
<.060
.020
.020 __
.110
NITROGEN,
ORGANICTOTAL(MG/LAS N)
-----_
.51 --- r
.28--
.38 -_
.19
NITROGEN, AMMONIA +ORGANIC
TOTAL(MG/LAS N)
.50 --
.60
.80
.30--
.40 __
.30
NITROGEN,
TOTAL(MG/LAS N)
--
--
.50
.40
PHOSPHORUS,
TOTAL(MG/LAS P)
<.010----
<.010 --
<.010
.010--
.010 __
.020
DATE
JAN05...05...05...05...05...05...05...
AUG29...29...29...29...29...29...
ARSENICDISSOLVED(UG/LAS AS)
1 _
1
1 --
1
BARIUM,DIS
SOLVED(UG/LAS BA)
71 __ 67
76__-- 79
CADMIUMDIS
SOLVED(UG/LAS CD)
<1----__ __<1
<1__ <1
CHROMIUM,DISSOLVED(UG/LAS CR)
<10--______
<10
<10__ __
<10
COPPER,DISSOLVED(UG/LAS CU)
1 __ __
1
2__ ___2
IRON,DIS
SOLVED(UG/LAS FE)
7 10 5
4 20--_8
LEAD,DIS
SOLVED(UG/LAS PB)
<1 __
1
<1 __--_<1
MANGANESE,DIS
SOLVED(UG/LAS MN)
1 10 12
1__10 __39
MERCURYDIS
SOLVED(UG/LAS HG)
<.1----___
<.1
<.1_. __
<.1
SELENIUM,DIS
SOLVED(UG/LAS SE)
<1-- __ <1
1_____<1
SILVER,DIS
SOLVED(UG/LAS AG)
<1 __ __<1
<1_. ____<1
ZINC,DIS
SOLVED(UG/LAS ZN)
<3-- ______<3
4_______9
301739097470901 LAKE'AUSTIN SITE AL
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN05...05...05...
AUG29...29...
TIME
122012221224
10051007
SAMPLINGDEPTH(FEET)
1.0010.020.0
1.0012.0
SPE CIFICCONDUCTANCE(UMHOS)
527527527
580580
PH(STANDARD
UNITS)
8.08.08.0
7.97.7
TEMPERATURE(DEG C)
10.010.010.0
28.025.5
OXYGEN,DIS
SOLVED(MG/L)
9.89.79.6
7.44.1
OXYGEN, DIS
SOLVED(PERCENT
SATURATION)
878685
9651
302043097472401 LAKE AUSTIN SITE BC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN05:..05...05...05...
AUG29...29...29...29...
TIME
1235123712391241
1100110211041106
SAMPLINGDEPTH(FEET)
1.0010.020.028.0
1.0010.020.029.0
SPE CIFICCONDUCTANCE
.(UMHOS)
523523523563
568584584584
PH(STANDARD
UNITS)
,8.18.18.18.0
7.98.07.98.0
TEMPERATURE(DEG C)
10.010.010.09.5
28.021.521.021.0
TRANS PARENCY
(SECCHIDISK)(M)
1.70
.__
1.30
__--
OXYGEN ,DISSOLVED(MG/L)
9.89.89.79.0
7.56.55.95.3
OXYGEN, DIS SOLVED(PERCENT
SATURATION)
87878679
97746760
-31-
COLORADO RIVER BASIN
LAKE AUSTIN AT AUSTIN, TX Continued
302043097472401 LAKE AUSTIN SITE BC Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN05...05...05...05...
AUG29...29...29...29...
NITROGEN,
NITRITETOTAL(MG/LAS N)
<.020__
<.020<.020
<.020__
<.020
NITROGEN,
N02+N03TOTAL(MG/LAS N)
<.10__
<.10<.10
<.10__
<.10
NITROGEN.
AMMONIATOTAL(MG/LAS N)
<.060__
<.060<.060
<.010____
.090
NITROGEN,
ORGANICTOTAL(MG/LAS N)
-.__
.-
.31
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
.50.-
.50
.60
.30__
.40
PHOSPHORUS,TOTAL(MG/LAS P)
<.010.-
<.010<.010
.010--
.010
IRON,DIS
SOLVED(UG/LAS FE)
10-.1010
30-- 20
MANGANESE,DIS
SOLVED(UG/LAS MN)
<10--
<1010
10-- 20
302044097472301 LAKE AUSTIN SITE BL
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
OXYGEN, SPE- DIS- CIFIC SOLVED
SAM- CON- PH OXYGEN, (PER- PLING DUCT- (STAND- TEMPER- DIS- CENT
TIME DEPTH ANCE ARD ATURE SOLVED SATUR- DATE (FEET) (UMHOS) UNITS) (DEC C) (MG/L) ATION)
JAN 05... 1250 1.00 524 8.1 10.0 9.7 86 05... 1252 11.0 524 8.1 10.0 9.7 86
AUG 29... 1120 1.00 570 7.9 28.0 7.6 98 29... 1122 10.0 584 8.1 22.0 5.4 62
301926097502201 LAKE AUSTIN SITE CC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
OXYGEN, SPE- TRANS- DIS- CIFIC PAR- COLOR SOLVED
DATE
JAN05...05...05...05...
AUG29...29...29...29...
DATE
JAN05...05...05...05...
AUG29...29...29...29...
TIME
1310131213141316
1130113211341136
STREPTOCOCCIFECAL,
KF AGAR(COLS.PER
100 ML)
<1__
79__ --
SAMPLINGDEPTH(FEET)
1.0010.020.025.0
1.0010.020.028.0
HARDNESS(MG/LAS
CAC03)
180__
190
200__
210
CONDUCTANCE(UMHOS)
524524524524
572584584584
HARDNESS,NONCAR-BONATE(MG/LCAC03)
45__ 54
53____56
PH(STANDARD
UNITS)
8.28.38.38.2
7.97.97.98.1
CALCIUMDISSOLVED(MG/LAS CA)
41___
43
45____
46
TEMPERATURE(DEC C)
11.010.510.510.5
26.520.520.520.5
MAGNESIUM,DIS
SOLVED(MG/LAS MG)
20__
21
22____
22
ENCY(SECCHIDISK)(M)
4.0__
1.50 --
SODIUM,DIS
SOLVED(MG/LAS NA)
31___
33
36__
36
(PLATINUM-COBALTUNITS)
<1__ <1
<1____<1
SODIUMAD
SORPTION
RATIO
1.0____
1.1
1.1____
1.1
TURBIDITY
(NTU)
.80__
.80
1.4
4.7
POTASSIUM,DIS
SOLVED(MG/LAS K)
3.6____
3.5
3.7____
3.8
OXYGEN ,DIS
SOLVED(MG/L)
10.09.89.89.6
8.56.46.35.7
ALKALINITYFIELD(MG/LASCAC03)
140____
140
150
__150
(PERCENT
SATURATION)
91888886
107727164
SULFATEDISSOLVED(MG/L
AS S04)
39___
39
41
__42
OXYGEN DEMAND, BIOCHEMICAL,5 DAY(MG/L)
.3__--.4
.4-.__.2
CHLORIDE,DIS-
. SOLVED(MG/LAS CL)
58___
58
64____
67
COLI- FORM, FECAL,0.7UM-MF(COLS./100 ML)
K1__ --
21 --
FLUO-RIDE,DIS
SOLVED(MG/LAS F)
.20____
.20
.20___
.20
-32-
COLORADO RIVER BASIN
LAKE AUSTIN AT AUSTIN, TX Continued
301926097502201 LAKE AUSTIN SITE CC Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN05...05...05...05...
AUG29...29...29...29...
SILICA,DISSOLVED(MG/LAS
SI02)
6.9 __
7.3
7.7 _
7.4
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
284 __
289
310 __
314
SOLIDS,RESIDUEAT 105DEC. C,
SUSPENDED
(MG/L)
<1_-
3
8 __10
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
<1____<1
6 __
2
NITROGEN,
NITRITETOTAL(MG/LAS N)
<.020<.020
<.020
<.020<.020
__<.020
NITROGEN,
N02+N03TOTAL(MG/LAS N)
<.10<.10
__<.10
.10
.10__
.10
NITROGEN,
AMMONIATOTAL(MG/LAS N)
.060<.060
__.060
.020
.120_
.070
NITROGEN,
ORGANICTOTAL(MG/LAS N)
.54 __
.44
.28
.18
.53
NITROGEN, AMMONIA +ORGANIC
TOTAL(MG/LAS N)
.60.20
.54
.30
.30__
.60
PHOSPHORUS,
TOTAL(MG/LAS P)
<.010<.010
<.010
.020
.010._
.030
ARSENICDIS
SOLVED(UG/LAS AS)
1--__
1
1--__
1
DATE
JAN05...05...05...05...
AUG29...29...29...29...
BARIUM,DIS
SOLVED(UG/LAS BA)
69
CADMIUMDIS
SOLVED(UG/LAS CD)
<1
CHROMIUM,DISSOLVED(UG/LAS CR)
<10
COPPER,DISSOLVED(UG/LAS CU)
1
IRON,DIS
SOLVED(UG/LAS FE)
<320
LEAD,DIS
SOLVED(UG/LAS PB)
2
MANGANESE,DIS
SOLVED(UG/LAS MN)
4<10
MERCURYDIS
SOLVED(UG/LAS HG)
<.1
SELENIUM,DIS
SOLVED(UG/LAS SE)
<1
SILVER,DIS
SOLVED(UG/LAS AG)
1
ZINC,DIS
SOLVED(UG/LAS ZN)
<3--
72
79
80
<1
<320
220
12
<3
4
302021097540001 LAKE AUSTIN SITE DC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN05.05.05.
AUG29.29.29.
. .
. .
. .
. .
TIME
134513471349
120012021204
OXYGEN, SPE- TRANS- DIS- NITRO- CIFIC PAR- SOLVED GEN,
SAM- CON- PH ENCY OXYGEN, (PER- NITRITE PLING DUCT- (STAND- TEMPER- (SECCHI DIS- CENT TOTAL DEPTH ANCE ARD ATURE DISK) SOLVED SATUR- (MG/L (FEET) (UMHOS) UNITS) (DEC C) (M) (MG/L) ATION) AS N)
11018
11016
NITRO-GEN.
N02+N03TOTAL
DATE
JAN05..05..05..
AUG29..29..29..
(MG/LAS N)
.
.
.
.
.
<. 1 0_-
<. 10
.10_.
<. 10
.00
.0
.0
.00
.0
.0
NITROGEN,
AMMONIATOTAL(MG/LAS N)
<.060__
.070
.080..
.120
538538538
584583583
NITROGEN,
ORGANICTOTAL(MG/LAS N)
..
...43
.22__
.18
8.48.48.3
8.18.18.2
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
.50._
.50
.30_.
.30
10.5 3,10.010.0
19.5 3.19.519.5
NITROGEN,
TOTAL(MG/LAS N)
....
.40__--
,7..
,5_--
PHOSPHORUS,TOTAL(MG/LAS P)
<.010_.
.020
.010._
.010
10.910.610.1
5.95.65.1
IRON,DIS
SOLVED(UG/LAS FE)
20__20
20_.40
98 <.9489 <.
65 <.6256 <.
MANGANESE,DIS
SOLVED(UG/LAS MN)
10__10
10__20
020..
020
020_
020
-33-
COLORADO RIVER BASIN
LAKE AUSTIN AT AUSTIN, TX Continued
302314097544901 LAKE AUSTIN SITE EC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN05...05...
AUG29...29...
DATE
JAN05...05...
AUG29...29...
DATE
JAN05...05...
AUG29...29...
TIME
1415 U17
12301232
STREP TOCOCCIFECAL,
KF AGAR(COLS.PER
100 ML)
<1
K5
SILICA, DIS SOLVED (MG/L AS SI02)
6.3 6.5
7.5 7.5
SAM-PLING DEPTH (FEET)
1.009.00
1.008.00
HARD NESS (MG/L AS
CAC03)
190200
210210
SOLIDS, SUM OF CONSTI TUENTS,
DIS SOLVED (MG/L)
299306
317310
SPE CIFIC CON DUCT ANCE (UMHOS)
555552
584584
HARD NESS, NONCAR- BONATE (MG/L CAC03)
5461
6256
SOLIDS, RESIDUE AT 105 DEC. C,SUS
PENDED(MG/L)
PH(STAND ARD
UNITS)
8.2 8.4
7.87.9
CALCIUM DIS SOLVED (MG/L AS CA)
4344
4746
SOLIDS, VOLA TILE. SUS
PENDED (MG/L)
TEMPER ATURE
(DEC C)
12.511.0
18.0 18..0
MAGNE SIUM, DIS SOLVED (MG/L AS MG)
2122
2322
NITRO GEN,
NITRITE TOTAL (MG/L AS N)
,020,020
<.020 <.020
TRANS PAR ENCY
(SECCHIDISK) (M)
2.10
2.40
SODIUM,DIS SOLVED (MG/L AS NA)
3435
3736
NITRO GEN,
N02+N03 TOTAL (MG/L AS N)
OXYGEN, OXYGEN COLI-
,10 ,10
.10
.10
COLOR (PLAT INUM- COBALT UNITS)
SODIUMAD
SORP TION
RATIO
1.1 1.1
1.1 1.1
NITRO GEN,
AMMONIA TOTAL (MG/L AS N)
<.060 <.060
.090
.030
TUR BID ITY
(NTU)
1.6 4.3
1.0 1.0
POTAS SIUM, DIS
SOLVED (MG/L AS K)
3.9 3.7
4.4 3.9
NITRO GEN,
ORGANIC TOTAL (MG/L AS N)
.21
.17
OXYGEN, DIS SOLVED (MG/L)
10.810.9
3.8 3.3
ALKA LINITY FIELD (MG/L AS CAC03)
140140
150150
NITRO GEN, AM MONIA + ORGANIC TOTAL (MG/L AS N)
.60 1.90
.30
.20
DIS SOLVED (PER CENT
SATUR ATION)
10299
4135
SULFATE DIS SOLVED (MG/L
AS S04)
4244
4138
NITRO GEN,
TOTAL (MG/L AS N)
.40
.30
DEMAND, BIO CHEM ICAL, 5 DAY (MG/L)
.6
.7
.3
CHLO RIDE, DIS SOLVED (MG/L AS CL)
6466
6766
PHOS PHORUS, TOTAL (MG/L AS P)
<.010 .050
.020
.010
FORM,FECAL,0.7UM-MF
(COLS./ 100 ML)
K3
K1
FLUO- RIDE, DIS SOLVED (MG/L AS F)
.30
.30
.20
.20
ARSENICDIS SOLVED (UG/L AS AS)
DATE
JAN05...05...
AUG29...29...
BARIUM,DIS SOLVED (UG/L AS BA)
7779
7980
CADMIUMDIS
SOLVED (UG/L AS CD)
CHRO MIUM, DIS SOLVED (UG/L AS CR)
COPPER, DIS SOLVED (UG/L AS CU)
IRON, DIS
SOLVED (UG/L AS FE)
<3 3
2614
LEAD, DIS
SOLVED (UG/L AS PB)
MANGA NESE, DIS SOLVED (UG/L AS MM)
MERCURYDIS
SOLVED (UG/L AS HG)
SELE NIUM, DIS SOLVED (UG/L AS SE)
SILVER,DIS SOLVED (UG/L AS AG)
ZINC, DIS
SOLVED (UG/L AS ZN)
<3 5
1521
DATE
JAN05...05...
AUG29...29...
DATE
JAN05...05...
AUG29...29...
301739097471201 LAKE AUSTIN SITE AC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
SAM PLING AME-
TIME DEPTH TRYNE (FEET) TOTAL
11301142
10201030
ATRA- ATRA- CYAN- CYPRA-TONE ZINE, AZINE ZINETOTAL TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L) (UG/L)
1.0060.0
1.0045.0
PROME- PROME- PRO- SIMA- SIME-TONE TRYNE PAZINE PROPHAM SEVIN, ZINE TONETOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
<2.0 <2.0
<2.0 <2.0
<2.0 <2.0
<2.0 <2.0
METHO-MYL TOTAL (UG/L)
<2.0 <2.0
<2.0 <2.0
SIME- TRYNE TOTAL (UG/L)
-34-
COLORADO RIVER BASIN
LAKE AUSTIN AT AUSTIN, TX--Continued
DATE
JAN05...05...
AUG29...29...
DATE
JAN05...05...
AUG29...29...
301926097502201 LAKE AUSTIN SITE CC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
SAM PLING AME-
TIME DEPTH TRYNE (FEET) TOTAL
13101316
11301136
PROME-TONE
TOTAL (UG/L)
1.00 <.1(25.0 <.1C
1.00 <.1C28.0 <.1C
PROME- PRO-TRYNE PAZINETOTAL TOTAL(UG/L) (UG/L)
ATRA- TONE TOTAL (UG/L)
PROPHAM TOTAL (UG/L)
<2.0 <2.0
<2.0 <2.0
ATRA- CYAN- CYPRA-ZINE, AZINE ZINETOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
SEVIN,TOTAL(UG/L)
<2.0 <2.0
<2.0 <2.0
SIMA- SIME-ZINE TONE
TOTAL TOTAL(UG/L) (UG/L)
METHO-MYL TOTAL (UG/L)
<2.0 <2.0
<2.0 <2.0
SIME- TRYNE TOTAL (UG/L)
DATE
JAN05...05...
AUG29...29...
DATE
JAN05...05...
AUG29...29...
302314097544901 LAKE AUSTIN SITE EC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
SAM PLING AME-
TIME DEPTH TRYNE (FEET) TOTAL
ATRA- TONE TOTAL (UG/L)
14151417
12301232
PROME-TONE TOTAL (UG/L)
1.00 <.1(9.00 <.1(
1.00 <.1(8.00 <.1(
PROME- PRO-TRYNE PAZINETOTAL TOTAL(UG/L) (UG/L)
PROPHAM TOTAL (UG/L)
<2.0 <2.0
<2.0 <2.0
ATRA- CYAN- CYPRA-ZINE, AZINE ZINETOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
SEVIN,TOTAL(UG/L)
<2.0 <2.0
<2.0 <2.0
SIMA- SIME-ZINE TONE
TOTAL TOTAL(UG/L) (UG/L)
METHO-MYL TOTAL (UG/L)
<2.0 <2.0
<2.0 <2.0
SIME- TRYNE TOTAL (UG/L)
-35-
COLORADO RIVER BASIN
08157900 TOWN LAKE AT AUSTIN, TX
LOCATION. Lat 30MV56", long 97 e 43'03", Travis County, Hydrologic Unit 12090205, at Longhorn Dam on the Colorado River at Austin, 1.5 mi downstream from Interstate Highway 35, and 2.3 mi southeast of the State Capitol in Austin.
DRAINAGE AREA. 38,390 mi 2 , approximately, of which 12,880 mi 2 probably is noncontributing.
PERIOD OF RECORD..-Chemical, biochemical, and pesticide analyses: February 1975 to current year.
301559097424801 TOWN LAKE SITE AR.
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN06...06...06...06...
AUG30...30...30...30...
TIME
110511071109111'
1020102210241026
SAM-PLINGDEPTH(FEET)
1.0010.020.0o* o
1.0010.020.027.0
SPE CIFICCON-DUCT-ANCE(UMHOS)
548548534534
575575575575
PH(STANDARD
UNITS)
7.97.97.87.8
7.57.47.47.4
TEMPERATURE(DEC C)
12.512.511.511.5
27.526.526.025.5
OXYGEN,DIS
SOLVED(MG/L)
9.39.38.27.9
5.74.64.94.5
OXYGEN, DIS SOLVED(PERCENT
SATURATION)
88887572
73586156
301500097424801 TOWN LAKE SITE AC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN06...06...06...06...
AUG30...30...30...30...
DATE
JAN06...06...06...06...
AUG30...30...30...30...
TIME
1015101710191021
1000100210041006
STREPTOCOCCIFECAL,
KF AGAR(COLS.PER
100 ML)
20_.._
30.__.
SAMPLINGDEPTH(FEET)
1.0010.020.026.0
1.0010.020.027.0
HARDNESS(MG/LAS
CAC03)
220
210
210._
210
SPE CIFICCONDUCTANCE(UMHOS)
543543539539
575575575579
HARDNESS,NONCAR-BONATE(MG/LCAC03)
38.. 43
53._..53
PH(STANDARD
UNITS)
7.87.87.77.7
7.57.57.47.4
CALCIUMDISSOLVED(MG/LAS CA)
54....
54
49._..
49
TEMPERATURE(DEC C)
13.013.011.011.0
27.527.026.026.0
MAGNESIUM,DIS
SOLVED(MG/LAS MG)
20..._
19
22._..
22
TRANS PARENCY
(SECCHIDISK)(M)
2.00
2.10._ --
SODIUM,DIS
SOLVED(MG/LAS NA)
27 ._
27
34__
35
COLOR(PLATINUM-COBALTUNITS)
<1.. <1
<1__ <1
SODIUMAD
SORPTION
RATIO
.8
.._..8
1.0__..
1.1
TURBIDITY
(NTU)
1.8.__
2.1
2.0
4.0
POTASSIUM,DIS
SOLVED(MG/LAS K)
2.9..._
2.8
4.1__..
3.6
OXYGEN ,DIS
SOLVED(MG/L)
8.79.08.58.3
6.06.35.44.9
ALKALINITYFIELD(MG/LASCAC03)
180 _.
170
160__
160
OXYGEN, DIS SOLVED(PERCENT
SATURATION)
83867775
77806761
SULFATEDISSOLVED(MG/L
AS S04)
33_._.
32
43__..
44
OXYGEN DEMAND, BIOCHEMICAL,5 DAY(MG/L)
.6 ._.5
.6 .6
CHLORIDE,DISSOLVED(MG/LAS CL)
45____
43
62__._
63
COLI- FORM, FECAL,0.7UM-MF(COLS./100 ML)
K14_.__._
210__ --
FLUO-RIDE,DIS
SOLVED(MG/LAS F)
.30____
.30
.20____
.20
-35-
COLORADO RIVER BASIN
TOWN LAKE AT AUSTIN,TX--Continued
DATE
JAN06...06...06...06...
AUG30...30...30...30...
DATE
JAN06...06...06...06...
AUG30...30...30...30...
301500097424801 TOWN LAKE AC--Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
SILICA, DIS
SOLIDS, SUM OF CONSTI
SOLIDS,RESIDUE SOLIDS,
VOLA-
NITRO-NITRO- GEN.AM- GEN, MONIA +
SOLVED TUENTS,(MG/LASSI02)
9.4
9.1
8.6
8.7
DIS SOLVED (MG/L)
300
289
319
322
NITRO- NITRO- NITRO- NITRO-AT 105 VOLA- GEN, GEN, GEN, GEN, DEC. C, TILE, NITRATE NITRITE N02+N03 AMMONIA ORGANIC ORGANICSUS- SUS- TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL
FENDED FENDED (MG/L (MG/L (MG/L (MG/L (MG/L (MG/LAS N)(MG/L) (MG/L) AS N) AS N) AS N) AS N) AS N)
.38<.020 .020
<.020
<.020 <.020
<.020
.50
.40
.50
.10
.10
.090
.080
.090
.080
.060
.100
.61
.52
.51
.22
.44
.30
.70
.60
.60
.30
.50
.40
NITRO GEN, TOTAL (MG/L S N)
1.2 1.0
1.1
.40
PHOS PHORUS, TOTAL (MG/L AS P)
.020
.020
.020
.010
.50
.010
.010
ARSENICDIS
SOLVED(UG/L AS AS)
BARIUM,DIS
SOLVED(UG/L AS BA)
CADMIUMDIS
SOLVED(UG/L AS CD)
CHROMIUM,DISSOLVED(UG/L AS CR)
COPPER,DISSOLVED(UG/L AS CU)
IRON,DIS
SOLVED(UG/L AS FE)
LEAD,DIS
SOLVED(UG/L AS PB)
MANGANESE,DIS
SOLVED(UG/L AS MN)
MERCURYDIS
SOLVED(UG/L AS HG)
SELENIUM,DIS
SOLVED(UG/L AS SE)
SILVER,DIS
SOLVED(UG/L AS AG)
ZINC,DIS
SOLVED(UG/L AS ZN)
69
65
78
79
00 3020
<310
45
210
24
17
6
9
20
301503097424701 TOWN LAKE SITE AL
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
SAM PLING
TIME DEPTHDATE
JAN06...06...
AUG30...30...30...
10501052
093909410943
1.0012.0
1.0010.018.0
SPE CIFIC CON DUCT ANCE
PH OXYGEN,(STAND- TEMPER- DIS-ARD ATURE SOLVED
538542
575578578
7.8 7.8
7.37.37.4
13. 12.
28.027.526.0
8.9 8.1
5.4 5.4 5.2
OXYGEN,DIS
SOLVED (PER CENT
SATUR-(FEET) (UMHOS) UNITS) (DEC C) (MG/L) ATION)
8676
706965
301500097440801 TOWN LAKE SITE BR
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN06...06...06...
AUG30...30...30...30...
TIME
113011321134
1050105210541056
SAMPLINGDEPTH(FEET)
SPECIFICCONDUCTANCE(UMHOS)
PH(STANDARD
UNITS)
TEMPERATURE(DEC C)
OXYGEN ,DIS
SOLVED(MG/L)
OXYGEN , DISSOLVED(PERCENT
SATURATION)
1.0010.014.0
1.0010.020.025.0
549558544
578580580580
7.8
7.6 7.6 7.6 7.6
13.012.011.0
27.026.025.525.5
9.3 9.38.4
6.5 6.2 5.8 5.6
898676
83777269
-37-
COLORADO RIVER BASIN
TOWN LAKE AT AUSTIN, TX Continued
301504097440901 TOWN LAKE SITE BC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN06...06...06...06...
AUG30...30...30...
TIME
1120112211241126
104010421044
SAMPLINGDEPTH(FEET)
1.0010.020.027.0
1.0010.021.0
SPE CIFICCONDUCTANCE(UMHOS)
550550550541
575579579
PH(STANDARD
UNITS)
7.97.97.87.8
7.77.67.6
TEMPERATURE(DEG C)
13.012.511.511.0
27.026.025.5
OXYGEN,DIS
SOLVED(MG/L)
9.29.29.18.2
6.76.25.4
OXYGEN, DIS SOLVED(PERCENT
SATURATION)
88878375
857767
301544097445201 TOWN LAKE SITE CR
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN06...06...
AUG30...30...
TIME
11481150
10201022
SAMPLINGDEPTH(FEET)
1.009.00
1.0010.0
SPE CIFICCONDUCTANCE(UMHOS)
558565
591591
PH(STANDARD
UNITS)
7.87.8
7.57.5
TEMPERATURE(DEG C)
12.012.0
24.524.0
OXYGEN,DIS
SOLVED(MG/L)
9.69.5
6.15.9
OXYGEN, DIS
SOLVED(PERCENT
SATURATION)
8988
7471
301546097445101 TOWN LAKE SITE CC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN06...06...
AUG30...30...30...
TIME
11401142
111011121114
SAMPLINGDEPTH(FEET)
1.0014.0
1.0010.018.0
SPE CIFICCONDUCTANCE(UMHOS)
558558
589589589
PH(STANDARD
UNITS)
7.87.6
7.67.67.6
TEMPERATURE(DEG C)
12.011.0
24.524.524.5
OXYGEN,DIS
SOLVED(MG/L)
9.68.2
5.95.75.4
OXYGEN, DIS SOLVED(PERCENT
SATURATION)
8975
726966
301556097452301 TOWN LAKE SITE DR
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN06...06...06...
TIME
121612181220
SAMPLINGDEPTH(FEET)
1 0010.015.0
SPECIFICCONDUCTANCE(UMHOS)
575565565
PH(STANDARD
UNITS)
7.87.87.7
TEMPERATURE(DEG C)
12.511.511.5
OXYGEN ,DIS
SOLVED(MG/L)
10.49.99.2
OXYGEN, DISSOLVED(PERCENT
SATURATION)
989184
-38-
COLORADO RIVER BASIN
TOWN LAKE AT AUSTIN, TX Continued
DATE
JAN0606...06...
AUG30...30...30...
301558097452201 TOWN LAKE SITE DC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
SPE- TRANS- CIFIC PAR-
SAM- CON- PH ENCY PLING DUCT- (STAND- TEMPER- (SECCHI
TIME DEPTH ANCE ARD ATURE DISK)
COLOR(PLAT INUM-COBALT
TUR BIDITY
OXYGEN, DIS
SOLVED
OXYGEN,DISSOLVED(PER CENT
SATUR-(FEET) (UMHOS) UNITS) (DEC C) (M) UNITS) (NTU)
DATE
JAN06..06..,06..
AUG30..30...30..,
DATE
JAN06...06...06...
AUG30...30...30...
DATE
JAN06...06...06...
AUG30...30...30...
(MG/L) ATION)
959082
727169
">0012021204
113011321134
OXYGENDEMAND,
BIOCHEMICAL.5 DAY(MG/L)
.7
.5
.4
.5
POTASSIUM,DIS
SOLVED(MG/LAS K)
2.5
2.7
3.7
3.7
NITROGEN,
NITRITETOTAL(MG/LAS N)
<.020<.020<.020
<.020<.020<.020
1.0010.020.0
1.0010.018.0
COLI-FORM,FECAL,0.7UM-MF
(COLS./100 ML)
110
240
ALKALINITY' FIELD
(MG/LAS
CAC03)
200
190
150150~
NITROGEN,
N02+N03TOTAL(MG/LAS N)
.70
.50
.60
<.10<. 1 0
.10
583565565
582582582
STREPTOCOCCI
FECAL,KF AGAR(COLS.
PER100 ML)
37
70
SULFATEDISSOLVED(MG/L
AS S04)
34
34
42
44
NITROGEN,
AMMONIATOTAL(MG/LAS N)
<.060.060.070
.080.090.070
7.77.87.7
7.77.77.7
HARDNESS(MG/L
ASCAC03)
240
230
200
210
CHLORIDE,DISSOLVED(MG/LAS CL)
43
45
64
65
NITROGEN,
ORGANICTOTAL(MG/LAS N)
.64
.73
.22
.31
.13
12.511.511.0
24.524.024.0
HARDNESS,
NONCAR-BONATE
(MG/LCAC03)
39
39
54
63
FLUO-RIDE,
DISSOLVED(MG/LAS F)
.30
.30
.20
.20
NITROGEN, AMMONIA +ORGANIC
TOTAL(MG/LAS N)
.50
.70
.80
.30
.40
.20
2.70
1.70
CALCIUMDISSOLVED(MG/LAS CA)
61
57
47
49
SILICA,DISSOLVED(MG/LAS
SI02)
9.0
9.6
8.1
8.4
NITROGEN,
TOTAL(MG/LAS N)
1.21.21.4
__
.30
<1 <1
<! < 1
MAGNESIUM,DIS
SOLVED(MG/LAS MG)
21
21
21
22
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
317
311
312
318
PHOSPHORUS,
TOTAL(MG/LAS P)
.020<.010
.020
.010
.010
.010
1.2
1.0
3.2
3.0
SODIUM,DIS
SOLVED(MG/LAS NA)
26
27
36
36
SOLIDS,RESIDUEAT 105DEC. C,
SUSPENDED
(MG/L)
2
0
10
12
IRON,DIS
SOLVED(UG/LAS FE)
320<3
72046
10.19.89.0
5.95.95.7
SODIUMAD
SORPTION
RATIO
.8
.8
1.1
1.1
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
<1
0
<1
<1
MANGANESE,DIS
SOLVED(UG/LAS MN)
81014
820
9
SAM PLING
TIME DEPTHDATE
JAN06...06...06...
AUG30...30...30...
133013321334
120012021204
1.0010.014.0
1.0010.018.0
301712097470701 TOWN LAKE SITE EC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
SPE CIFIC CON DUCT ANCE
PH(STAND- TEMPER- ARD ATURE
(FEET) (UMHOS) UNITS) (DEC C)
556543538
582582582
7.67.87.9
7.9 7.9 7.9
13,13.12.0
22, 22,
1.40
OXYGEN, OXYGEN COL I-TRANS
PARENCY
(SECCHIDISK)
(M)
COLOR(PLATINUM-COBALTUNITS)
TURBIDITY
(NTU)
OXYGEN,DIS
SOLVED(MG/L)
DISSOLVED(PER
CENTSATURATION)
DEMAND,BIOCHEMICAL,5 DAY(MG/L)
FORM,FECAL,0.7UM-MF
(COLS./100 ML)
23.0
.80
1.0
3.5
3.0
9.69.7
10.3
6.3 6.3 5.9
929395
747470
K12
K14
-39-
COLORADO RIVER BASIN
TOW LAKE AT AUSTIN, TX Continued
301712097470701 TOWN LAKE SITE EC Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
JAN06...06...06...
AUG30...30...30...
DATE
JAN06...06...06...
AUG30...30...30...
STREP TOCOCCI
FECAL,KF A6AR(COLS.
PER100 ML)
K13....
240..
SILICA,DISSOLVED(MG/LAS
SI02)
9.0_.
8.9
7.9__
7.8
HARDNESS(MG/LAS
CAC03)
220_.
210
210..
210
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
303__
296
309__
317
HARDNESS,
NONCAR-BONATE
(MG/LCAC03)
39..52
58 58
SOLIDS,RESIDUEAT 105DEC. C,
SUSPENDED
(MG/L)
4_.<1
15._14
CALCIUMDISSOLVED(MG/LAS CA)
53__
50
47..
47
SOLIDS,VOLA
MAGNESIUM,DIS
SOLVED(MG/LAS MG)
21__
21
22
22
NITROGEN,
TILE, NITRITESUS
PENDED(MG/L)
<1_.<1
8._<1
TOTAL(MG/LAS N)
<.020._
<.020
<.020_.
<.020
SODIUM.DIS
SOLVED(MG/LAS NA)
27..
30
36..
36
NITROGEN.
SODIUMAD
SORPTION
RATIO
POTAS- ALKA-SIUM, LINITY SULFATEDIS- FIELD
SOLVED (MG/L(MG/L AS
DISSOLVED(MG/L
AS K) CAC03) AS S04)
.8._.9
1.1--
1.1
NITROGEN,
2.9 180--
3.2 160
3.7 150
4.4 150
NITRO-NITRO- GEN.AM-
GEN, MONIA +N02+N03 AMMONIA ORGANIC ORGANIC
TOTAL(MG/LAS N)
.40
.20
<. 10_.
<.10
CHRO-BARIUM, CADMIUM MIUMDIS- DIS- DIS
COPPERDIS-
IRON, LEAD,DIS- DIS-
TOTAL(MG/LAS N)
<.060._
.060
.050__
.030
TOTAL TOTAL(MG/L (MG/LAS N) AS N)
.60
.54 .60
.35 .40.-
.37 .40
35_.
36
36--
44
NITRO
CHLORIDE,DISSOLVED(MG/LAS CL)
47'__
51
66-.
66
PHOS-GEN, PHORUS,
TOTAL(MG/LAS N)
1.0__
.80
__
TOTAL(MG/LAS P)
<.010__
.010
.010__
010
FLUO-RIDE,
DISSOLVED(MG/LAS F)
.30__
.30
.20
.20
ARSENICDIS
SOLVED(UG/LAS AS)
1._
1
<1__
1
MANGA- SELE-NESE,
DIS-MERCURY NIUM,
DIS- DIS-SILVER
DIS-ZINC,DIS-
SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED(UG/L (UG/L (UG/L (UG/L
DATE AS
JAN06.06.06.
AUG30.30.30.
. .
. .
. .
. .
BA) AS
70__73
80_.82
(UG/L (UG/LCD) AS CR) AS CU) AS
<1 <_.<1 <
<1 <..<1
10-
10
10..10
2.1
2.2
(UG/L (UG/L (UG/L (UG/L (UG/LFE) AS PB) AS MN) AS HG) AS SE) AS AG) AS
8 <..
4 <
14..12
1.1
2.3
3 <.1 <.3 <.1 <
3 <.1 <.7 <.1 <
1 <.1
1 <.1 <
1.1
1.1
ZN)
7__
4
6._13
301601097454001 TOWN LAKE SITE FC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATETIME
11451147
SAMPLINGDEPTH(FEET)
1.008.00
SPECIFICCONDUCTANCE(UKHOS)
630633
PH(STANDARD
UNITS)
7.27.2
TEMPERATURE(DEC C)
23.523.0
OXYGEN,DIS
SOLVED(MG/L)
8.26.4
OXYGEN, DISSOLVED(PERCENT
SATURATION)
9876
-40-
COLORADO RIVER BASIN
TOWN LAKE AT AUSTIN, TX--Continued
DATE
JAN06...06...
AUG30...30...
DATE
JAN06...06...
AUG30...30...
301500097424801 TOWN LAKE SITE AC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
SAM PLING AME-
TIME DEPTH TRYNE (FEET) TOTAL
10151021
10001006
PROME-TONE TOTAL (UG/L)
1.00 <.1(26.0 <.1(
1.00 <.1(27.0 <.1(
PROME- PRO-TRYNE PAZINETOTAL TOTAL(UG/L) (UG/L)
ATRA- TONE TOTAL (UG/L)
PROPHAM TOTAL (UG/L)
<2.0 <2.0
<2.0 <2.0
ATRA- CYAN- CYPRA-ZINE, AZINE ZINETOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
SEVIN,TOTAL(UG/L)
<2.0 <2.0
<2.0 <2.0
SIMA- SIME-ZINE TONE
TOTAL TOTAL(UG/L) (UG/L)
METHO-MYL TOTAL (UG/L)
<2.0 <2.0
<2.0 <2.0
SIME- TRYNE TOTAL (UG/L)
DATE
JAN06...06...
AUG30...30...
DATE
JAN06...06...
AUG30...30...
301712097470701 TOWN LAKE SITE EC
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
SAM PLING AME-
TIME DEPTH TRYNE (FEET) TOTAL
ATRA- ATRA- CYAN- CYPRA-TONE ZINE, AZINE ZINETOTAL TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L) (UG/L)
13301334
12001204
1.0014.0
1.0018.0
PROME- PROME- PRO- SIMA- SIME-TONE TRYNE PAZINE PROPHAM SEVIN, ZINE TONE
TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
METHO-MYL TOTAL (UG/L)
<2.0 <2.0
<2.0 <2.0
SIME- TRYNE TOTAL (UG/L)
<2.0 <2.0
<2.0 <2.0
<2.0 <2.0
<2.0 <2.0
-41-
COLORADO RIVER BASIN
08158000 COLORADO RIVER AT AUSTIN, TX (National stream-quality accounting network)
LOCATION.--Lat 30°14"40", long 97°41'39", Travis County, Hydrologic Unit 12090205, on right bank 1,000 ft upstream from upstream bridge on U.S. Highway 183 in Austin, 1.4 mi downstream from Longhorn Dam, and at mile 290.3.
DRAINAGE AREA.-39,009 mi 2 , approximately, of which 11,403 mi 2 probably is noncontributing.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--February 1898 to current year. Records of daily discharge for Dec. 13-26, 1914, and Feb. 9-17, 1915, published in WSP 408, have been found unreliable and should not be used.
REVISED RECORDS.--WSP 508: 1915(m). WSP 528: 1900(M), 1918(m). WSP 548: 1901-16. WSP 1342: Drainage area. WSP 1562: 1908, 1929(M), 1936.
GAGE. Water-stage recorder. Datum of gage is 402.27 ft National Geodetic Vertical Datum of 1929. Prior to June 19, 1939, all records collected at or near Congress Avenue Bridge 3.9 mi upstream at datum 19.6 ft higher; prior to June 18, 1915, nonrecording gages, recording gages thereafter; June 20, 1939, to Oct. 16, 1963, at site 1,000 ft downstream from present site at datum 5.0 ft higher.
REMARKS.--Water-discharge records fair. Since 1937, at least 10 percent of drainage area regulated by reservoirs. Flow largely regulated by Lake Travis (station 08154500). The city of Austin diverts water for municipal use up stream from station and returns sewage effluent downstream. Many other diversions above Lake Buchanan for irriga tion, municipal supplies, and oilfield operations. Gage-height telemeter at station.
AVERAGE DISCHARGE. 38 years (water years 1899-1936) unregulated, 2.711 ftVs (1,964,000 acre-ft/yr); 47 years (water years 1937-83) regulated, 1,985 ft 3 /s (1,438,000 acre-ft/yr).
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 481,000 ft 3 /s June 15, 1935 (gage height, 50 ft, present site and datum, from floodmark); minimum daily, 10 ft 3 /s Dec. 17, 1972.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage since at least 1833, 51 ft July 7, 1869, present site and datum (adjusted to present site on basis of record for flood of June 15, 1935), determined from information concerning stage at former site furnished by Dean T. U. Taylor.
EXTREMES FOR CURRENT YEAR.--Maximum discharge, 8,440 ft 3 /s Aug. 8 at 1630 hours (gage height, 9.98 ft); minimum daily, 6.3 ft'/s Oct. 21.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINAC -FT
99384836970759
73136
736789
4698826753
4949495141
6.36.5
654936
5941
125184
4944
4663.81509936.3
9250
NOV
471802325964
5361516357
5673516347
6557658360
674213927068
DEC
83312206367771
711246754120
12671576967
6363636061
64 7965 50989 103976 7365 58
7014566706581
3853 5292128 171976 122047 54
7640 10500
CAL YR 1982 TOTAL 540922.8 MEAN WTR YR 1983 TOTAL 296366.8 MEAN
JAN
24580697673
7482857570
7072717366
8380179156121
14810210310899
10497
10810796
114
308699.524566
6120
1482812
FEB
979798
119291
101105343131
111117113115293
117112102
MAR
9192
107289110
119105813238544
573555531543737
136 388134 1230135 543133 582148 613
60517838110919694
3886 12863139 415343 123097 91
7710 25510
APR
74390426400423
43739918401210474
438641474411580
MAY
15201540145013401290
11801200120012401400
21301220131011801210
JUN
16101600167017302550
18301790218020702070
19001930199020001280
674 1140 2160626 1250 1920651 1440 1830488 1060 1810588 1510 1830
136 521 498137 748 552124 902 915127 199 996103 127 1070
944 1780593 1960
1210 18901260 20201420 2110
11301160112012001310
21595720
184074
42830
121011401310154014301480
19302020191020401920
40347 573301302 19112130 2550593 1280
80030 113700
JUL
18602020192019502010
22502090210022102200
21902320220024702260
4582040170012701170
14701460136013501250
116010401060112010901080
5212816822470458
103400
AUG
10601050938964
2240
2260113022801080925
89614743112046
629662649510406
780645
132021002050
199019102160209020902300
3785812212300
4675090
SEP
24102260243023402370
23802590247024202280
21102010195015001530
15601640203022501760
941878867966
1020
977986168014301430
5346517822590867
106000
MAX 7250 MIN 6.3 AC-FT 1073000 MAX 2590 MIN 6.3 AC-FT 587800
-42-
COLORADO RIVER BASIN
08158000 COLORADO RIVER AT AUSTIN, TX--Contlnuod
WATER-QUALITY RECORDS
PERIOD OF RECORD. Chemical analyses: October 1947 to October 1973. Chemical and bloc hum I c<il analyui'H: October 19/J to current year. Sediment records: October 1974 to current year.
PERIOD OF DAILY RECORD. SPECIFIC CONDUCTANCE: October 1947 to current year. WATER TEMPERATURES: October 1947 to current year.
REMARKS.--Mean monthly and annual concentrations and loads for selected chemical constituents have been computed uHln>, the daily (or continuous) records of specific conductance and regression relationships between each chemical constit uent and specific conductance. Regression equations developed for this station may be obtained from the Geolo^lc/il Survey District office upon request.
EXTREMES FOR PERIOD OF DAILY RECORD.--SPECIFIC CONDUCTANCE: Maximum daily, 737 micromhos Jan. 12, 1964; minimum daily, 243 micromhos Dec. 2. 19i3. WATER TEMPERATURES: Maximum daily, 33.0°C July 25, 1979;minimum daily, 6.0°C Jan. 28, 1948, Feb. 4, 1949.
EXTREMES FOR CURRENT YEAR. SPECIFIC CONDUCTANCE: Maximum daily, 721 micromhos Nov. 17; minimum daily, 387 micromhos Dec. 4.WATER TEMPERATURES: Maximum daily, 26.5°C Aug. 16; minimum daily, 11.0°C on several days during November and January.
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
NOV09...
FEE15...
JUN28...
JUL20...
AUG23...
SEP27...
DATE
NOV09...
FEE15...
JUN28...
JUL20...
AUG23...
SEP27...
DATE
NOV09...
FEE15...
JUN28...
JUL20.. .
AUG23...
SEP27. . .
OXYGEN, OXYGEN COLI- STREP- SPE- DIS- DEMAND, FORM, TOCOCCI
STREAM- CIFIC SOLVED BIO- FECAL, FECAL, HARD- FLOW, CON- PH TUR- OXYGEN, (PER- CHEM- 0.7 KF AGAR NESS
INSTAN- DUCT- (STAND- TEMPER- BID- DIS- CENT ICAL, UM-MF (COLS. (MG/L) TIME TANEOUS ANCE ARD ATURE ITY SOLVED SATUR- 5 DAY (COLS./ PER AS
(CFS) (UMHOS) UNITS) (DEC C) (NTU) (MG/L) ATION) (MG/L) 100 ML) 100 ML) CAC03)
0815
0940
1400
1115
0845
1140
HARDNESS,
NONCAR-BONATE(MG/LCAC03)
44
38
56
54
37
56
SOLIDS,RESIDUEAT 180DEC. CDIS
SOLVED(MG/L)
299
299
320
--
358
--
65
353
3420
1290
25
1110
CALCIUMDISSOLVED(MG/LAS CA)
50
57
50
51
51
46
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
285
289
319
309
319
310
540
520
573
562
583
574
MAGNESIUM,DISSOLVED(MG/LAS MG)
19
18
22
21
21
22
NITROGEN,
N02+N03DIS
SOLVED(MG/LAS N)
.15
.49
.14
__
.23
7.4
7.6
8.0
_.
7.4
--
SODIUM,DIS
SOLVED(MG/LAS NA)
28
23
34
31
31
34
NITROGEN,
AMMONIADIS
SOLVED(MG/LAS N)
.070
.080
.070
_.
.130
19.0
15.0
25.0
22.0
29.0
22.0
SODIUMAD
SORPTION
RATIO
.9
.7
1.0
1.0
1.0
1.1
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
1.00
.60
.50
_.
.50
--
1.0
3.9
2.1
1.0
--
POTASSIUM,DIS
SOLVED(MG/LAS K)
3.2
2.3
3.6
3.2
3.3
3.5
PHOSPHORUS,TOTAL(MG/LAS P)
.030
.040
.020
__
.010
_-
5.8
9.4
5.2
3.4
ALKALINITYFIELD(MG/LASCAC03)
160
180
160
160
178
150
PHOSPHORUS,
DISSOLVED(KG/LAS P)
<.010
.030
.040
__
.010
._
63
96
64
45
SULFATEDISSOLVED(MG/L
AS S04)
33
35
43
43
40
43
PHOSPHORUS,ORTHO ,DIS
SOLVED(MG/LAS P)
<.010
.020
.020
- -
<.010
__
.5
1.3
.0
.6
--
CHLORIDE,DISSOLVED(MG/LAS CL)
47
37
62
57
55
63
SEDIMENT,SUSPENDED(MG/L)
19
9
12
__
9
__
K83
K320
K360
270
FLUO-RIDE,DIS
SOLVED(MG/LAS F)
.30
.30
.20
.20
.30
.30
SEDIMENT,DIS
CHARGE,SUS
PENDED(T/DAY)
3.3
8.6
11 1
__
.61
__
580
1200
150
__
180
--
SILICA,DISSOLVED(MG/LASSI02)
7.5
6.9
7.5
6.9
9.9
7.9
SED.SUSP.
SIEVEDIAM.
% FINERTHAN
.062 MK
100
84
88
74
__
200
220
220
210
210
210
-43-
COLORADO RIVER BASIN
08158000 COLORADO RIVER AT AUSTIN, TX Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
MONTH
OCT.
NOV.
DEC.
JAN.
FEB-.
MAR.
APR.
MAY
JUNE
JULY
AUG.
SEPT
TOTAL
WTD. AVG.
YEAR
1982
1982
1982
1983
1983
1983
1983
1983
1983
1983
1983
1983
CHRO- ARSENIC BARIUM, CADMIUM MIUM, COBALT, COPPER, IRON,
DIS- DIS- DIS- DIS- DIS- DIS- DIS SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED
TIME (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/LDATE AS AS) AS BA) AS CD) AS
NOV09... 0815 1 77 <1
FEB15... 0940 1 62 <1
JUN28... 1400 1 78 <1
AUG23... 0845 1 85 <1
MANGA-LEAD, NESE, MERCURY NICKEL,DIS- DIS- DIS- DIS
SOLVED SOLVED SOLVED SOLVED(UG/L (UG/L (UG/L (UG/L
DATE AS PB) AS MN) AS HG) AS NI)
NOV09... <1 12 <.1 <1
FEB15... 1 6 <.1 1
JUN28... 1 4 <.1 <1
AUG23... 2 82 <.1 34
CR) AS
<1
<1
<1
°
SELENIUM,DIS
SOLVED(UG/LAS SE)
<1
1
1
<1
MONTHLY AND ANNUAL MEANS AND LOADS FOR OCTOBER 1982
SPECIFICCONDUCT- DIS- DIS-ANCE SOLVED SOLVED
DISCHARGE (MICRO- SOLIDS SOLIDS(CFS-DAYS) MHOS) (MG/L) (TONS)
4663.8 542 295 3710
3853 572 311 3240
5292 552 300 4290
3086 573 311 2590
3886 554 301 3160
12863 537 292 10100
21595 573 311 18200
40347 562 305 33300
57330 568 309 47800
52128 575 312 43900
37858 574 312 31900
53465 579 315 45400
296366.8 ** ** 248000
812 569 309 **
DISSOLVED
CHLORIDE(MG/L)
48
52
49
52
50
47
52
51
51
52
52
53
**
51
CO) AS
<3
<3
<3
<3
SILVER,DIS
SOLVED(UG/LAS AG)
<1
<1
<1
°
CU) AS FE)
3 <3
5 4
1 <3
9 5
ZINC,DIS
SOLVED(UG/LAS ZN)
7
12
16
4
TO SEPTEMBER 1983
DISSOLVED
DIS- DISSOLVED SOLVED
CHLORIDE SULFATE SULFATE(TONS)
606
540
706
433
520
1650
3030
5500
7950
7340
5320
7610
41200
**
(MG/L) (TONS)
34 432
37 380
35 501
37 305
35 369
34 1180
37 2130
36 3890
36 5610
37 5160
37 3740
37 5340
** 29000
36 **
HARDNESS(CA.MG)(MG/L)
210
220
220
220
220
210
220
220
220
220
220
230
**
220
-44-
COLORADO RIVER BASIN
08158000 COLORADO RIVER AT AUSTIN, TX Continued
DAY
12 3-45
6789
10
111213 H15
1617181920
2122232425
262728293031
MEAN
SPECIFIC CONDUCTANCE (MICROMHOS/CM AT 25 DEC. C), WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983EQUIVALENT MEAN
OCT NOV DEC JAN FEE MAR APR MAY JUN JUL AUG SEP
525520522523527
537542558532572
557570581572567
578582579589582
595600609611608
609611597581587591
564570526575569
591585586593582
570583600607615
624721622623593
592591587557564
582518541609 ,534
529545530387563
557563576561573
589557515581589
585574550530599
607596533555586
576591582589533549
475508547532537
527582592593559
610603597595596
602600587569591
571573572596648
624593526597596597
527496565511550
565539563574552
555486559522620
568552566562504
557573563501562
557558557
___
561701570563559
553540565558542
538552552534450
500528535542524
546553541499533
551522518541535546
548571565559558
564562570572575
572578587598578
565570573571560
571572574576577
579578577575576
573575578575577
578578577579565
507543560573550
573575573573572
535458518566570
562568562563560565
569576584578538
583572578565572
566574576583577
540517563556541
570564574575570
572601580577575
575577579578579
580578579580579
574569576577575
562563560554569
576571572572576
574576575577580587
578580581585574
579574578543562
567569567558571
567568569572566
572571572574576
567573582571578581
579582583595585
587588577586585
546570580581584
590589575559577
575572571571574
577579581577584
571 586 560 577 549 544 572 561 569 574 572 579
DAY
12345
6789
10
1112131415
1617181920
2122232425
262728293031
MEAN
TEMPERATURE, WATER (DEC. C) , WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983ONCE-DAILY
OCT
23.523.524.524.525.0
25.524.525.025.025.0
24.023.021.025.022.0
22.021.021.021.021.0
21.020.021.020.019.0
18.018.519.021.019.019.5
22.0
NOV
20.520.521.018.518.5
18.518.518.519.019.0
19.019.018.011.016.5
17.016.016.517.016.5
17.018.019.015.516.0
15.014.514.014.515.0
17-. 5
DEC
15.015.515.515.515.0
15.515.515.514.514.5
14.514.014.013.513.5
13.513.013.514.014.0
14.014.014.014.014.0
.__14.013.513.012.012.0
14.0
JAN
12.011.011.011.011.0
11.011 .011.012.012.0
12.012.012.012.012.0
13.012.012.012.011.0
13.513.013.013.013.0
13.513.513.014.514.016.0
12.5
FEE
15.514.513.513.513.5
13.513.513.014.015.0
15.015.015.515.513.5
13.015.515.515.516.5
15.515.014.015.515.5
15.515.515.5
___
14.5
MAR
15.516.018.019.519.0
18.018.018.018.016.5
15.015.516.016.516.0
16.016.516.016.516.5
16.514.014.014.514.0
14.514.014.014.515.016.0
16.0
-45-
APR
16.014.515.015.016.0
16.515.516.517.017.0
18.020.520.520.518.0
17.018.018.021.021 .0
18.518.518.518.518.5
18.018.019.019.519.0
18.0
MAY
19.019.019.518.019.0
19.020.020.019.519.5
19.519.519.519.518.0
17.020.019.018.017.0
17.017.017.020.020.5
20.020.020.020.521.521.0
19.0
JUN
21.021 .020.520.520.5
20.520.520.521.020.0
20.520.020.020.020.0
21.021.021.025.520.5
21.021.021.521.022.0
21.521.520.521.021.5
21 .0
JUL
21.021 .021.521.522.0
23.024.023.023.022.0
21 .522.021.021.020.5
20.020.020.021.521 .0
21.021.523.023.023.0
22.023.023.023.0
22.0
AUG
24.525.523.525.024.5
24.024.524.024.024.0
24.024.024.024.024.0
26.526.025.525.025.5
25.525.025.525.525.0
25.525.025.025.524.524.0
25.0
SEP
24.024.024.023.023.0
21 .521 .522.022.022.0
23.022.023.023.023.5
21 .521.522.023.022.0
20.521.521.021 .021.0
21 .021.021.521.021.5
22.0
COLORADO RIVER BASIN
08158650 COLORADO RIVER BELOW AUSTIN, TX (Low-flow partial-record station)
LOCATION. Lat 30°12'28", long 97°38'15", Travis County, Hydrologic Unit 12090205, at bridge on Farm Road 973, 0.3 mi northeast of intersection of State Highway 71 and Farm Road 973, 8.8 mi downstream from Govalle Sewage Treatment Plant outfall, and 9.6 mi downstream from gaging station at Austin.
PERIOD OF RECORD. Chemical and biochemical analyses: February 1968 to current year. 1974 to current year.
Pesticide analyses: October
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
NOV09...
DEC21...
FEB15...
APR20...
JUN29...
AUG23...
DATE
NOV09...
DEC21...
FEB15...
APR20...
JUN29...
AUG23...
DATE
NOV09...
DEC21...
FEB15...
APR20...
JUN29...
AUG23...
OXYGEN, OXYGEN COLI- STREP- SPE- DIS- DEMAND, FORM, TOCOCCI CIFIC COLOR SOLVED BIO- FECAL, FECAL, HARD- CON- PH (PLAT- TUR- OXYGEN, (PER- CHEM- 0.7 KF AGAR NESS DUCT- (STAND- TEMPER- INUM- BID- DIS- CENT ICAL, UM-MF (COLS. (MG/L
TIME ANCE ARD ATURE COBALT ITY SOLVED SATUR- 5 DAY (COLS./ PER AS (UMHOS) UNITS) (DEC C) UNITS) (NTU) (MG/L) ATION) (MG/L) 100 ML) 100 ML) CAC03)
0955
1312
1125
0930
0745
1000
HARDNESS,
NONCAR-BONATE(MG/LCAC03)
17
43
33
54
63
52
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
348
358
335
317
320
318
660
686
620
595
582
575
CALCIUMDISSOLVED(MG/LAS CA)
41
50
53
51
49
50
SOLIDS ,RESIDUEAT 105DEC. C,SUS
PENDED(MG/L)
8
19
21
2
19
2
DATE
NOV09...
FEB15...
JUN29...
AUG23...
7.3
7.4
7.4
7.5
7.8
7.5
MAGNESIUM,DISSOLVED(MG/LAS MG)
18
19
17
21
22
21
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
4
6
16
<1
13
<1
TIME
0955
1125
0745
1000
20.0
16.5
15.0
21.5
24.0
30.5
SODIUM,DISSOLVED(MG/LAS NA)
53
54
41
36
37
34
NITROGEN,
NITRATETOTAL(MG/LAS N)
2.6
3.0
2.0
.58
.45
.62
ARSENICDISSOLVED(UG/LAS AS)
2
2
1
1
25
5
<1
<1
5
5
SODIUMAD
SORPTION
RATIO
1.8
1.7
1.3
1.1
1.1
1.0
NITROGEN,
NITRITETOTAL(MG/LAS N)
.470
.360
.190
.020
.050
.180
BARIUM,DIS
SOLVED(UG/LAS BA)
48
50
77
71
3.0
2.1
15
1.4
7.4
12
POTASSIUM,DIS
SOLVED(MG/LAS K)
7.2
6.8
4.8
3.8
3.8
4.0
NITROGEN,
N02+N03TOTAL(MG/LAS N)
3.1
3.4
2.2
.60
.50
.80
CADMIUMDIS
SOLVED(UG/LAS CD)
<1
<1
<1
<1
4.8
8.6
5.8
5.2
7.0
4.0
ALKALINITYFIELD(MG/LASCAC03)
160
160
170
160
150
160
NITROGEN,
AMMONIATOTAL(MG/LAS N)
4.30
3.60
3.20
1.50
.150
.510
CHROMIUM,DISSOLVED(UG/LAS CR)
<10
<10
<10
<10
53
90
59
60
84
54
SULFATEDISSOLVED(MG/L
AS S04)
52
55
53
47
46
45
NITROGEN,
ORGANICTOTAL(MG/LAS N)
6.7
3.3
1.2
1.1
.65
.79
COPPER,DISSOLVED(UG/LAS CU)
2
2
<1
6
16
4.0
7.3
.9
1.6
.6
CHLORIDE,DISSOLVED(MG/LAS CL)
68
68
56
56
65
58
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
11.0
6.90
4.40
2.60
.80
1.30
IRON,DIS
SOLVED(UG/LAS FE)
11
11
4
14
K240
K36
K260
K16
96
110
FLUO-RIDE,DISSOLVED(MG/LAS F)
1.2
.90
.60
.50
.30
.40
PHOSPHORUS,TOTAL(MG/LAS P)
2.80
3.10
2.30
.660
.230
.500
1200
500
1200
100
310
270
SILICA,DISSOLVED(MG/LASSI02)
11
8.0
7.4
5.5
7.2
9.4
CARBON ,ORGANICTOTAL(MG/LAS C)
11
7.5
6.6
4.8
2.8
3.4
180
200
200
210
210
210
-46-
COLORADO RJVET ""SIN
08158650 COLORADO RIVER BELOW AUSTIN. TX--Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
NOV09...
FEB15...
JUN29...
AUG23...
LEAD,DISSOLVED(UG/L AS PB)
MANGANESE,DIS
SOLVED(UG/L AS MN)
MERCURYDIS
SOLVED(UG/L AS KG)
SELENIUM,DISSOLVED(UG/L AS SE)
SILVER,DIS
SOLVED(UG/L AS AC)
ZINC,DIS
SOLVED(UG/L AS ZN)
120
44
7
13
12
9
11
3
DATE
FEB15...
AUG23...
TIME
1125
1000
AME-TRYNETOTAL
ATRA- TONE TOTAL (UG/L)
ATRA- CYAN-ZINE, AZINETOTAL TOTAL(UG/L) (UG/L)
CYPRA- ZINE TOTAL (UG/L)
METHO- PROME-MYL TONE
TOTAL TOTAL(UG/L) (UG/L)
<2.0
<2.0
.2
PROME- PRO-TRYNE PAZINE PROPHAM SEVIN,TOTAL TOTAL TOTAL TOTAL
DATE (UG/L) (UG/L) (UG/L) (UG/L)
FEB15... <.1 <.10 <2.0 <2.0
AUG23... <.1 <.10 <2.0 <2.0
SIMA- SIME- SIME-ZINE TONE TRYNE
TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
-47-
COLORADO RIVER BASIN
08154700 BULL CREEK AT LOOP 360 NEAR AUSTIN, TX
LOCATION.--Lat 30°22'19", long 97°47'04", Travls County, Hydrologlc Unit 12090205, on right bank at downstream side of bridge at Loop 360, 1.0 mi upstream from West Fork Bull Creek and Farm Road 2222, and 7.1 mi northwest of the State Capitol Building in Austin.
DRAINAGE AREA.--22.3 mi 2 .
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. April 1976 to July 1978 (operated as a flood-hydrograph partial-record station only), July 1978 to current year.
GAGE. Water-stage recorder, concrete control, and crest-stage gage. Datum of gage is 534.08 ft National Geodetic Vertical Datum of 1929 (levels from city of Austin bench mark).
REMARKS. Water-discharge records good. No known regulation or diversion above station. There are two recording rain gages in the watershed. This station is part of a hydrologic research project to study the rainfall-runoff rela tionship for the Austin urban-rural areas.
AVERAGE DISCHARGE.--5 years, 9.58 ft'/s (5.83 in/yr), 6,940 acre-ft/yr.
EXTREMES FOR PERIOD OF RECORD. Maximum discharge, 13,700 ft'/s May 13, 1982 (gage height, 11.96 ft); minimum daily, 0.02 ft'/s July 30. 1978.
EXTREMES FOR CURRENT YEAR.--Peak discharges above base of 200 ft'/s and maximum (*):
Date Time
May 20 May 21 Aug. 8
151510301415
Discharge (ft»/s>
409244
*724
Gage height (ft)
4.614.105.25
Minimum daily discharge, 0.29 ft'/s Oct. 2-5.
DAY
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINCFSMIN.AC -FT
CAL YRWTR YR
.34
.29
.29
.29
.29
.82
.47
.38
.54
.46
.42
.66
.77
.62
.62
.62
.62
.62
.62
.62
.54
.49
.48
.49
.49
.49
.49
.502.11.1.86
.819.89.53.21.9
.7
.6
.6
.6
.6
.6
.6
.5
.5
.5
.5
.5
.52.22.0
.9
.7
.82.01.9
13127.45.85.1
18.39 102.31.592.1.29.03.0336
1 982 TOTAL1 983 TOTAL
3.4113
.81
.15
.17203
25602485
4.94.85.04.54.1
3.83.73.73.53.7
4.74.64.44.34.0
3.43.43.43.33.0
3.03.03.03.03.0
3.04.94.33.73.74.0
118.83.835.03.0.17.20236
.30 MEAN
.66 MEAN
107.26.46.05.6
5.25.05.04.94.7
4.64.44.44.44.4
4.14.15.16.86.9
7.07.06.86.45.9
5.75.75.65.45.45.4
175.55.66
104.1.25.29348
7.016.81
5.45.25.05.2
14
118.47.7
2416
1211109.6
19
1613121112
11109.68.98.4
8.17.77.2
298.410.7
245.0.48.50592
MAX 1170MAX 79
7.27.16.8
1514
119.79.0
129.1
8.37.77.77.79.4
2016131327
1615292119
472822202118
486.715.7
476.8.70.81965
MIN .09MIN .29
1715151413
1211111010
9.38.88.27.77.2
6.86.86.66.05.2
5.05.04.64.34.0
3.73.73.73.73.7
242.08.07
173.7.36.40480
CFSMCFSM
3.73.53.12.72.5
2.42.62.42.06.0
114.63.73.44.1
3.93.03.93.9
62
7923161210
8.97.46.76.35.45.7
314.810.2
792.0.46.53624
.31 IN
.31 IN
6.06.05.05.4
29
3424161312
108.98.3
1913
2620151412
109.27.77.27.8
7.05.75.75.34.9
367.112.2
344.9.55.61728
4.274.15
4.64.13.43.23.0
6.54.43.63.12.7
2.72.42.42.73.0
199.56.35.74.9
4.34.03.02.62.2
2.22.12.01.81.41.3
124.14.00
191.3.18.21246
AC -FT 5080AC-FT 4930
1.0.87.81
2.34.1
2.31.5
66126.2
5.04.43.93.32.7
2.62.42.1
145.9
4.83.83.02.72.4
2.02.02.01.81.51.3
170.685.51
66.81.25.28339
1.0.98.79.65.55
.54
.701.52.93.9
2.21.31.0.84.95
.78
.602.0
245.2
2.91.91.81.61.3
1.01.01.01.01.0
66.882.23
24.54.10.11133
-48-
COLORADO RIVER BASIN
08154700 BULL CREEK AT LOOP 360 NEAR AUSTIN, TX--Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD. Chemical, biochemical, and pesticide analyses: April 1978 to current year. October 1979 to September 1980.
Radiochemical analyses:
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEE09...28...
MAY11...11...11...
SEP19...19...19...19...
TIME
12450850
002000420506
1215123012451415
STREAM-FLOW, INSTAN TANEOUS (CFS)
SPECIFICCON DUCT ANCE (UMHOS)
PH (STAND ARD
UNITS)
TEMPER ATURE (DEC C)
COLOR(PLAT INUM- COBALT UNITS)
TUR BID ITY
(NTU)
OXYGEN , DIS
SOLVED (MG/L)
OXYGEN , DISSOLVED(PER CENT
SATUR ATION)
OXYGEN DEMAND,BIOCHEM ICAL, 5 DAY (MG/L)
COLI- FORM,FECAL ,0.7 UM-MF (COLS./ 100 ML)
STREP TOCOCCIFECAL,
KF AGAR (COLS. PER
100 ML)
255.7
12816022
11135025352
390615
444302705
431294271219
7.9 8.2
8.0
8.0
12.510.0
10 3502.1
10 70020 180010 35
30 120015 110035 1200
10.210.5
9995
2.9.4
7.0172.6
5.1 6.25.0 5.0
2300 K7
10000
48000 K55
31000
DATE
FEE09...28...
MAY11...11...11...
SEP19...19...19...19...
HARDNESS(MG/L AS
CAC03)
HARDNESS,NONCAR-BONATE (MG/L CAC03)
CALCIUMDISSOLVED (MG/L AS CA)
MAGNESIUM,DIS
SOLVED (KG/L AS MG)
SODIUM,DIS
SOLVED (MG/L AS NA)
SODIUMAD
SORPTION RATIO
POTASSIUM,DIS
SOLVED (MG/L AS K)
ALKALINITYFIELD(MG/L AS
CAC03)
SULFATEDISSOLVED (MG/L
AS S04)
CHLORIDE,DISSOLVED (MG/L AS CL)
FLUO-RIDE,DIS
SOLVED (MG/L AS F)
SILICA,DISSOLVED(MG/L AS
SI02)
160270
240
110
4368
58
19
4771
67
33
1122
17
7.1
1728
53
.6
.8
1.6
.5
1.9 1.6
3.3
2.5
120200
180
93
4463
86
27
2445
70
14
.20
.10
7.5
5.9
DATE
FEE09...28...
MAY11...11...11...
SEP19...19...19...19...
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
222356
__
412
__
156--
SOLIDS,RESIDUEAT 105DEC. C,SUS
PENDED(MG/L)
3703
17402630
81
1090215021501930
DATE
FEB09...28...
MAY11...11...
SEP19...
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
49<1
47250836
402768985
TIME
12450850
00200506
1215
NITROGEN,
NITRATETOTAL(MG/LAS N)
.48--
.17
.38
.38
.16
.25
.25
.24
ARSENICDISSOLVED(UG/LAS AS)
1<1
11
1
NITROGEN,
NITRITETOTAL(MG/LAS N)
.020<.020
.030
.120
.020
.040
.050
.050
.060
BARIUM,DIS
SOLVED(UG/LAS BA)
2850
<10057
37
NITROGEN,
N02+N03TOTAL(MG/LAS N)
.50
.30
.20
.50
.40
.20
.30
.30
.30
CADMIUMDIS
SOLVED(UG/LAS CD)
<1<1
<1<1
<1
NITROGEN,
AMMONIATOTAL(MG/LAS N)
.060
.110
.100
.160
.090
.050
.030
.040
.050
CHROMIUM,DISSOLVED(UG/LAS CR)
<10<10
<10<10
<10
NITROGEN,
ORGANICTOTAL(MG/LAS N)
1.6.29
3.32.8.81
5.01.26.06.0
COPPER,DISSOLVED(UG/LAS CU)
64
96
4
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
1.70.40
3.403.00.90
5.001 .206.006.00
IRON,DIS
SOLVED(UG/LAS FE)
32<3
28029
21
PHOSPHORUS,TOTAL(MG/LAS P)
.470
.020
.400
.450
.080
.300
.310
.370
.370
101.
36626.
28
4943
-49-
COLORADO RIVER BASIN
08154700 BULL CREEK AT LOOP 360 NEAR AUSTIN, TX Continued
LEAD,DIS
SOLVED(UG/LAS PB)
MANGANESE,DIS
SOLVED(UG/LAS MN)
MERCURYDIS
SOLVED(UG/LAS HG)
SELENIUM,DIS
SOLVED(UG/LAS SE)
SILVER,DIS
SOLVED(UG/LAS AG)
ZINC,DIS
SOLVED(UG/LAS ZN)
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB09...28...
MAY11...11...
SEP19...
202
5 <3
105
<3
DATE
FEB09...
MAY11...
SEP19...
TIME
1245
0020
1215
AME-TRYNETOTAL
<.10
ATRA- TONE TOTAL (UG/L)
ATRA- CYAN-ZINE, AZINETOTAL TOTAL(UG/L) (UG/L)
.50
CYPRA- ZINE TOTAL (UG/L)
METHO- PROME-MYL TONE
TOTAL TOTAL(UG/L) (UG/L)
<2.0
<2.0
<2.0
DATE
FEB09...
MAY11...
SEP19...
PROME- PRO-TRYNE PAZINETOTAL TOTAL(UG/L) (UG/L)
PROPHAM TOTAL (UG/L)
<2.0
<2.0
<2.0
SEVIN,TOTAL(UG/L)
<2.0
<2.0
<2.0
SIMA- SIME-ZINE TONE
TOTAL TOTAL(UG/L) (UG/L)
SIME- TRYNE TOTAL (UG/L)
-50-
I OI O
o r> <J rc
ho r^ r^ 10 r\j -4 fo ( O "D ro o <o ru KI t^ o ro oo o NO to ro T r^ T ro no o -o r^ <^> o o* 10 r*~ oo -.t *
CO CD rt> r^ CD *O f~D f°D CD O* T - T T~ ^~ T "~ T T - "~ r T fvl OJ ^\J rvl <NJ to f-0 -^ ».Y O "O f^- ^*- ^O f*1 ) 'O ~O O O O O O O CD O O O O O O O CJ O O O O O O O O Q O O O O O O O O O O O T- T-
o o o o o o o o o o o o o o o o o o o o o o o o o O O O O O O O O O O
o o r.i o r*- o <o oo o o o o o o o o o o o o o o o o o ci o o o o o o o o
x '_> z ii > LU >-« It
OOOOOOC)
I Of
I i s:I orI OI (.-
II CO
II
O O O O
' J O O 'NJ J <ro vt o r iro to -t >- o
T> O 'i O .a o 'r- <\J -r 'O in CD t-> ro O < -> O
.t .j- 4 -t -t -r
-51-
COLORADO RIVER BASIN
08155260 BARTON CREEK NEAR CAMP CRAFT ROAD, AUSTIN, TX
LOCATION.- -La t 30°16'12", long 97°49'43", Travis County, Hydrologic Unit 12090205, on left bank about 0.5 mi south of Camp Craft Road, 1.0 mi downstream from bridge on Lost Creek Blvd., and 5 mi west of the State Capitol Building in Austin.
DRAINAGE AREA.- -109 mi 2.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. --September 1982 to September 1983.
GAGE. --Water-stage recorder. Altitude of gage is 570 ft, from topographic map.
REMARKS. --Water-discharge records good from 10 to 300 ft 3 /s, poor below 10 3 /s, and fair above 300 ft 3 /s. There are three recording rain gages in the watershed.
EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 492 ft 3 /s June 14, 1983 (gage height, 8.57 ft); no flow Sept. 1 to Nov. 25, 1982.
EXTREMES FOR SEPTEMBER 1982. --No flow.
EXTREMES FOR CURRENT YEAR. --Maximum discharge, 492 ft 3 /s June 14 at 2330 hours (gage height, 8.57 ft); no flow Oct. 1 to Nov. 25.
DAY
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINCFSMIN.AC- FT
CAL YRWTR YR
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00.000.00.00
.000.00.00
1982 TOTAL1983 TOTAL
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.12
.40
.34
.27
.23
1.36.045.40.00
.000.002.7
9286.
.22
.20
.39
.45
.40
.34
.32
.33
.34
.48
.76
.85
.83
.78
.76
.77
.81
.83
.84
.84
.84
.84
.83
.81
.78
.72
.921.11.11.12.5
23.08.742.5.20
.007.0146
MEAN52 MEAN
3.94.04.45.05.0
4.94.94.85.56.7
7.57.58.8
1414
1620222325
2525252523
201611109.0
10
405.913.1
253.9.12.14805
_25.4
1211101113
1514131934
322624.2235
7248424041
3938363426
252423
...
...
...
77927.8
7210
.26
.271550
MAXMAX 235
2322223996
5241384137
3635353636
6989837071
5550
106119113
183175149142140136
233975.518322.69.80
4640
MINMIN
128118113112106
9892878274
5647464036
3433322928
2828252220
1918171717
...
160253.412817
.49
.553180
CFSM.00 CFSM
1615141312
109.99.18.68.8
3357201311
119.7
109.4
36
2351761036944
393431282522
1132.536.52358.6.34.39
2250
_.23
2222201932
5185603631
27252249
182
92116844641
3631282725
2824191715
...
131243.718215.40.45
2600
ININ 3.17
1413121111
441715129.9
9.79.28.5
1113
2391874133
2825232119
171614131211
684.322.1
918.5.20.23
1360
AC-FTAC-FT
9.68.98.18.07.5
7.112622924
1612109.28.9
8.37.06.16.26.3
6.05.65.24.64.1
3.82.63.44.43.12.1
311.110.0
622.1.09.11617
_18420
1.3.81.58.40.40
.354.75.71 .11.2
5.518147.83.6
.47
.177.2
75169
11561383227
2523211918
696.2823.2169.17.21.24
1380
COLORADO RIVER BASIN
08155260 BARTON CREEK NEAR CAMP CRAFT ROAD NEAR AUSTIN, TX--Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Chemical, biochemical, and pesticide analyses: February to September 1983.
DATE
FEB09...
MAR01...
TIME
1350
1055
48
18
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
STREAM-FLOW, INSTAN TANEOUS (CFS)
SPECIFICCON DUCT ANCE (UMHOS)
PH (STAND ARD
UNITS)
TEMPER ATURE (DEC C)
COLOR(PLAT INUM- COBALT UNITS)
TUR BID ITY
(NXU)
OXYGEN, DIS
SOLVED (MG/L)
OXYGEN , DISSOLVED(PER CENT
SATUR ATION)
OXYGEN DEMAND,BIOCHEM ICAL, 5 DAY (MG/L)
COLI- FORM,FECAL,0.7 UM-MF (COLS./ 100 ML)
STREP TOCOCCIFECAL,
KF AGAR (COLS. PER
100 ML)
411
438
7.8
7.9
13.0
14.0
30
.50
9.5
9.5
93
95
.9
.4
K770
K5
K4800
56
DATE
FEB09...
MAR01...
HARDNESS(MG/L AS CAC03)
HARDNESS,
NONCAR-BONATE (MG/L CAC03)
CALCIUMDISSOLVED (MG/L AS CA)
MAGNESIUM,DIS
SOLVED (MG/L AS MG)
SODIUM,DISSOLVED (MG/L AS NA)
SODIUMAD
SORPTION
RATIO
POTASSIUM,DIS
SOLVED (MG/L AS K)
ALKALINITYFIELD(MG/L AS CAC03)
SULFATEDISSOLVED (MG/L
AS S04)
CHLORIDE,DISSOLVED (MG/L AS CL)
FLUO-RIDE,DIS
SOLVED (MG/L AS F)
200
230
31
37
54
61
16
18
8.0
7.8
.3
.2
1.0
1.0
170
190
32
28
14
15
.20
.20
SOLIDS, SOLIDS,SILICA, SUM OF RESIDUE SOLIDSDIS- CONST!- AT 105 VOLA-SOLVED TUENTS, DEC. C,(MG/L DIS- SUS-
DATE
FEB09...
MAR01...
AS SI02)
5.7
6.7
SOLVED FENDED
233
252
TILE, SUS
PENDED
N1TRO- NITRO- NITRO- NITRO- NITRO- GEN.AM-GEN, GEN, GEN, GEN, MONIA + PHOS- CARBON,
NITRITE N02+N03 AMMONIA ORGANIC ORGANIC PHORUS, ORGANIC TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L
(MG/L) (MG/L) (MG/L) AS N) AS N) AS N) AS N) AS N) AS P) AS C)
28 <.020
<.020
.20
.10
<.060
.100 .30
.50
.40
.040
.010
2.1
1.5
DATE
FEB09...
MAR01...
TIME
1350
1055
ARSENICDIS
SOLVED (UG/L AS AS)
BARIUM,DIS
SOLVED (UG/L AS BA)
CADMIUMDIS
SOLVED (UG/L AS CD)
CHROMIUM,DISSOLVED (UG/L AS CR)
COPPER,DISSOLVED (UG/L AS CU)
IRON,DIS
SOLVED (UG/L AS FE)
6
<3
DATE
FEB09...
MAR01...
LEAD,DIS
SOLVED(UG/LAS PB)
MANGANESE,DIS
SOLVED(UG/LAS MN)
MERCURYDIS
SOLVED(UG/LAS HG)
SELENIUM,DIS
SOLVED(UG/LAS SE)
SILVER,DIS
SOLVED(UG/LAS AG)
ZINC,DIS
SOLVED(UG/LAS ZN)
10
<3
<3
DATE
FEB 09...
TIME
1350
AME-TRYNETOTAL
C.10
ATRA- TONE TOTAL (UG/L)
C.10
ATRA- CYAN-ZINE, TOTAL
AZINE TOTAL
(UG/L) (UG/L)
C.10
CYPRA- ZINE TOTAL (UG/L)
METHO- PROME-MYL TONE
TOTAL TOTAL(UG/L) (UG/L)
C2.0
PROME- PRO-TRYNE PAZINE PROPHAM SEVIN,TOTAL TOTAL TOTAL TOTAL
DATE (UG/L) (UG/L) (UG/L) (UG/L)
FEB 09... <.1 <.10 <2.0 <2.0
SIMA- SIME- SIME-ZINE TONE TRYNE
TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
C.10
-53-
COLORADO RIVER BASIN
08155300 BARTON CREEK AT LOOP 360, AUSTIN, TX
LOCATION.--Lat 30e 14'40", long 97°48 1 07rt , Travis County, Hydrologic Unit 12090205, on Loop 360, 0.9 mi west of the intersection of Ben White and Lamar Boulevards, and 4.3 mi southwest of the State Capitol Building in Austin.
DRAINAGE AREA.--116 mi*.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--June 1975 to January 1977 (periodic gage heights and discharge measurements only), February 1977 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 510.32 ft National Geodetic Vertical Datum of 1929 (State Department of Highways and Public Transportation bench mark).
REMARKS.--Water-discharge records fair except those below 5 ft 3 /s, which are poor. No known regulation or diversions. There are three recording rain gages located in the watershed.
AVERAGE DISCHARGE.--6 years, 34.1 ft 3 /s (3.99 in/yr), 24,700 acre-ft/yr.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 18,100 ft 3 /s May 25, 1981 (gage height, 15.03 ft); no flow for many days each year.
EXTREMES OUTSIDE PERIOD OF RECORD.--The flood of May 28, 1929, was probably the highest since that date (discharge 39,400 ft 3 /s), based on a slope-area measurement of peak flow at a site about 2 mi upstream.
EXTREMES FOR CURRENT YEAR.-rMaximum discharge, 339 ft 3 /s May 21 at 2115 hours (gage height, 5.07 ft), no peak above base of 1,000 ft 3 /8; no flow for many days.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXM1NCFSMIN.AC- FT
CAL YRWTR YR
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00.000.00.00
.000.00.00
1982 TOTAL1983 TOTAL
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.41
.00
.00
.00
.00
.41.014.41.00
.000.00.8
4172.452585.31
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.19
.01
.20.006.19.00
.000.00.4
MEANMEAN
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00.000.00.00
.000.00.00
11.47.08
.00
.00
.00
.00
.00
.00
.00
.00
.23
.00
.00
.00
.00
.001.2
2516116.06.1
5.03.21.71.2.92
.13
.00
.00______
77.682.77
25.00.02.02154
MAX 1780MAX 1 59
.00
.00
.001339
187.45.06.84.9
3.02.01.71.41 .7
1725242324
2220474844
929672656360
845.9027.3
96.00.24.27
1680
MINKIN
5446434340
3532302827
242116137.8
4.11.9.62.16.02
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
466.6015.6
54.00.13.15926
.00 CFSM
.00 CFSM
.00
.00
.00
.00
.00
.00
.00
.00
.00
.89
.9723
.93
.00
.00
.00
.00
.00
.005.9
15998204.51.6
.64
.25
.08
.03
.00
.00
315.7910.2159.00.09.10626
.10 IN
.06 IN
.00
.00
.00
.00
.41
1024142.6.24
.00
.00
.00
.0091
5760483935
2619161 113
27145.02.5.40
515.1517.2
91.00.15.17
1020
1.34.83
.05
.00
.00
.00
.00
19.41.00.00.00
.00
.00
.00
.00
.00
3.232369.93.4
1.4.55.22.06.00
.00
.00
.00
.00
.00
.00
106.193.43
36.00.03.03211
AC-FT 8280AC-FT 5130
.00
.00
.00
.00
.00
.00
.00263.4.97
.02
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
30.39.9826.00
.008.0160
.00
.00
.00
.00
.00
.006.7.62.00.00
.00
.00
.00
.00
.00
.00
.00
.3521111
54238.02.1.23
.00
.00
.00
.00
.00
227.007.57111.00.07.07450
-54-
COLORADO RIVER BASIN
08155300 BARTON CREEK AT LOOP 360, AUSTIN, TX--Continued
PERIOD OF RECORD. Chemical, biochemical, and pesticide analyses: January 1979 to current year. Radiochemical analy ses: October 1979 to September 1980.
DATE
FEE 23...
DATE
FEE 23...
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
TIME
0900
STREAM-FLOW,INSTANTANEOUS(CFS)
SPECIFICCONDUCTANCE(UMHOS)
PH(STANDARD
UNITS)
TEMPERATURE(DEC C)
COLOR(PLATINUM-COBALTUNITS)
TURBIDITY
(NTU)
OXYGEN ,DIS
SOLVED(MG/L)
OXYGEN . DISSOLVED(PERCENT
SATURATION)
OXYGEN DEMAND,BIOCHEMICAL,5 DAY(MG/L)
COLI- FORM,FECAL .0.7UM-MF(COLS./100 ML)
STREP TOCOCCIFECAL,
KF AGAR(COLS.PER
100 ML)
3.1 429 8.1 12.0 .80 9.8 93 .4 K4 80
DATE
FEE 23...
HARD- MAGNE- SODIUM POTAS- ALKA- CHLO- FLUO- SILICA, HARD- NESS, CALCIUM SIUM, SODIUM, AD- SIUM, LINITY SULFATE RIDE, RIDE, DIS- NESS NONCAR- DIS- DIS- DIS- SORP- DIS- FIELD DIS- DIS- DIS- SOLVED (MG/L BONATE SOLVED SOLVED SOLVED TION SOLVED (MG/L SOLVED SOLVED SOLVED (MG/L AS (MG/L (MG/L (MG/L (MG/L RATIO (MG/L AS (MG/L (MG/L (MG/L ASCAC03) CAC03) AS CA) AS MG) AS
220
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED
: (MG/L)
37
SOLIDS,RESIDUEAT 105DEC. C,SUS
PENDED(MG/L)
57
SOLIDS.VOLATILE,SUSPENDED(MG/L)
18
NITROGEN,
NITRATETOTAL(MG/LAS N)
NA)
7.7
NITROGEN,
NITRITETOTAL(MG/LAS N)
AS
.2
NITROGEN,
N02+N03TOTAL(MG/LAS N)
K) CAC03) AS
.9
NITROGEN,
AMMONIATOTAL(MG/LAS N)
180
NITROGEN,
ORGANICTOTAL(MG/LAS N)
S04) AS CL) AS F) SI02)
27
NITROGEN .AMMONIA +ORGANICTOTAL(MG/LAS N)
14
PHOSPHORUS,TOTAL(MG/LAS P)
.20 6.5
CARBON ,ORGANICTOTAL(MG/LAS C)
239 .08 .020 .10 .090 .01 .10 .010 1.8
DATE
FEE 23...
TIME
0900
ARSENICDIS
SOLVED(UG/L AS AS)
BARIUM,DISSOLVED(UG/L AS BA)
CADMIUMDIS
SOLVED(UG/L AS CD)
CHROMIUM,DISSOLVED(UG/L AS CR)
COPPER,DISSOLVED(UG/L AS CU)
IRON,DIS
SOLVED(UG/L AS FE)
<1 21 <1 <3
DATE
FEE23...
LEAD,DISSOLVED(UG/LAS PB)
0
MANGANESE,DIS
SOLVED(UG/LAS MN)
2
MERCURYDIS
SOLVED(UG/LAS HG)
<.1
SELENIUM,DIS
SOLVED(UG/LAS SE)
1
SILVER,DIS
SOLVED(UG/LAS AG)
<1
ZINC,DIS
SOLVED(UG/LAS ZN)
<3
DATE
FEB 23...
TIME
0900
AME-TRYNETOTAL
ATRA- TONE TOTAL (UG/L)
ATRA- CYAN-ZINE, AZINETOTAL TOTAL(UG/L) (UG/L)
CYPRA- ZINE TOTAL (UG/L)
PROME-TONE
TOTAL (UG/L)
PROME- PRO-TRYNE PAZINETOTAL TOTAL(UG/L) (UG/L)
SIMA- SIME- SIME-ZINE TONE TRYNE
TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
-55-
COLORADO RIVER BASIN
08155500 BARTON SPRINGS AT AUSTIN, TX
LOCATION. Lat 30 e 15'48", long 97°46'16", Travis County, Hydrologic Unit 12090205, at ground-water well (YD 58-42-903), on right bank 0.4 mi upstream from Barton Springs Road bridge over Barton Creek, 0.7 mi upstream from mouth, and 1.8 mi southwest of the State Capitol Building in Austin.
DRAINAGE AREA.--Not applicable. Only flow from springs is published for this station.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--November 1894 to April 1917, and October 1918 to February 1978 (discharge measurements only), May 1917 to September 1918 (published as "Barton Creek at Austin, Texas"), and March 1978 to current year.
GAGE.--Water-stage recorder. Datum of gage, at ground-water well (YD 58-42-903), is 462.34 ft National Geodetic Ver tical Datum of 1929. May 1917 to September 1918, nonrecording gage at site 1,000 ft downstream at different datum.
REMARKS. Water-discharge records fair. Entire flow published is springflow from the Edwards and associated limestones in the Balcones Fault Zone. This station is part of an urban hydrologic project to study the ground-water resources in the Austin urban area.
AVERAGE DISCHARGE.--6 years (water years 1918, 1979-83), 54.0 ft 3 /s (39,120 acre-ft/yr).
EXTREMES FOR PERIOD OF RECORD (DISCHARGE MEASUREMENTS ONLY). Maximum measured discharge, 166 ft 3 /s May 10, 1941; minimum measured, 9.6 ft 3 /s Mar. 29, 1956.
EXTREMES FOR PERIOD OF RECORD (1917-18 AND SINCE MARCH 1978).--Maximum daily spring discharge, 108 ft 3 /s June 9-11, 16, 20, 21, 1979; minimum daily spring, 12 ft 3 /s Feb. 25, 1918.
EXTREMES FOR CURRENT YEAR. Maximum daily spring discharge, 87 ft 3 /s June 15; minimum daily spring, 31 ft 3 /s Oct. 22-24, Nov. 20, 21.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
12345
678910
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINAC -FT
CAL YRWTR YR
3533333433
3434353433
3333343433
3232333232
3231313132
323233343232
101832.8
3531
2020
1 982 TOTAL1 983 TOTAL
3232323232
3232343936
3232323232
3232323231
3132323333
3438424549
102134.0
4931
2030
1746121569
4236373837
3636363536
3738394242
4141424242
4242424242
414343424242
123839.9
4335
2460
MEANMEAN
4445454545
4545434240
3838383838
3838394142
4243434242
424242424242
129141.6
4538
2560
47.8 MAX59.1 MAX
4242424242
4242424243
4343444545
4546464747
4747484848
484847
125344.8
4842
2490
73 MIN87 MIN
4746464850
4949505152
5456575961
6365666869
6969727475
777980808181
194362.7
8146
3850
31 AC-FT31 AC-FT
8080808080
8080797979
7979797978
7878787877
7675747473
7373727171
231277.1
8071
4590
3463042780
7171717070
6969696867
6668707171
7170707274
7779828384
838383838282
229974.2
8466
4560
8181818283
8486858483
8383838487
8685858585
8484848484
8484838382
251283.7
8781
4980
8282818180
8079797978
7878787878
8082848382
8281818180
797978787777
247579.8
8477
4910
7776767677
7776777978
7776767574
7473727170
7070706969
696868676766
226072.9
7966
4480
6666656565
6564646363
6262626160
6059606366
6972717170
6968666664
194764.9
7259
3860
-56-
COLORADO RIVER BASIN
08155500 BARTON SPRINGS AT AUSTIN, TX Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Chemical, biochemical, and pesticide analyses: December 1978 to current year. Radiochstnical analy ses: October 1979 to September 1980.
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
MAR 02...
TIME
1015
STREAM-FLOW,INSTANTANEOUS(CFS)
SPECIFICCONDUCTANCE(UMHOS)
PH(STANDARD
UNITS)
TEMPERATURE(DEC C)
51 565 7.4 19.5
COLOR (PLAT INUM- COBALT UNITS)
<1
BID-ITY
(NTU)
.60
DIS SOLVED (MG/L)
7.0
OXYGEN, OXYGEN COLI-
SOLVED BIO-TUR- OXYGEN, (PER
CENT SATUR ATION)
78
CHEM ICAL, 5 DAY (MG/L)
0.7
STREP-DIS- DEMAND, FORM, TOCOCCI
FECAL, FECAL,
<1
KF AGARUM-MF (COLS.(COLS./ PER100 ML) 100 ML)
K3
DATE
MAR 02...
HARDNESS(MG/LASCAC03)
HARDNESS,
NONCAR-BONATE(MG/LCAC03)
CALCIUMDISSOLVED(MG/LAS CA)
MAGNESIUM,DISSOLVED(MG/LAS MG)
SODIUM,DISSOLVED(MG/LAS NA)
SODIUMAD
SORPTION
RATIO
POTASSIUM,DISSOLVED(MG/LAS K)
ALKALINITYFIELD(MG/LASCAC03)
SULFATEDISSOLVED(MG/L
AS S04)
CHLORIDE,DISSOLVED(MG/LAS CL)
FLUO-RIDE,DISSOLVED(MG/LAS F)
260 23 74 19 15 .4 1.2 240 30 26 .20
DATE
MAR 02...
SILICA,DISSOLVED(MG/LAS
SI02)
SOLIDS,SUM OFCONSTITUENTS ,
DISSOLVED(MG/L.)
SOLIDS,RESIDUEAT 105DEC. C,SUS
PENDED(MG/L)
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
NITROGEN,
NITRITETOTAL(MG/LAS N)
NITROGEN,
N02+N03TOTAL(MG/LAS N)
NITROGEN,
AMMONIATOTAL(MG/LAS N)
NITROGEN,
ORGANICTOTAL(MG/LAS N)
NITROGEN .AMMONIA +ORGANICTOTAL(MG/LAS N)
PHOSPHORUS,TOTAL(MG/LAS P)
CARBON ,ORGANICTOTAL(MG/LAS C)
9.3 319 <1 <.020 .90 .060 .44 .50 .030 1.0
DATE
MAR 02...
TIME
1015
ARSENICDIS
SOLVED(UG/L AS AS)
BARIUM,DIS
SOLVED(UG/L AS BA)
CADMIUMDIS
SOLVED(UG/L AS CD)
CHROMIUM,DISSOLVED(UG/L AS CR)
COPPER,DISSOLVED(UG/L AS CU)
IRON,DIS
SOLVED(UG/L AS FE)
<1 42 <1 <3
DATE
MAR 02...
LEAD,DIS
SOLVED(UG/L AS PB)
MANGANESE,DIS
SOLVED(UG/L AS MN)
MERCURYDIS
SOLVED(UG/L AS HG)
SELENIUM,DIS
SOLVED(UG/L AS SE)
SILVER,DIS
SOLVED(UG/L AS AG)
ZINC,DIS
SOLVED(UG/L AS ZN)
<1 <1
-57-
COLORADO RIVER BASIN
08155505 BARTON CREEK BELOW BARTON SPRINGS AT AUSTIN, TX (Reconnaissance partial-record station)
LOCATION.--Lat 30'15'50", long 97°46 f 03 H , Travls County, Hydrologlc Unit 12090205, 800 ft (240 IB) upstream from bridge on Barton Springs Road and 1.8 mi (2.9 km) southwest of State Capitol at Austin.
DRAINAGE AREA. 125.3 ml* (324.5 km 2 ).
PERIOD OF RECORD.--Occasional discharge measurements: January 1975 to current year. Chemical, biochemical, and pea.ti- cide analyses: January 1975 to September 1983. Radiochemical analyses: October 1979 to September 1980.
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
MAR 02...
TIME
1000
STREAM-FLOW,INSTAN TANEOUS(CFS)
SPECIFICCONDUCT ANCE(UMHOS)
PH(STAND ARD
UNITS)
TEMPER ATURE(DEC C)
51 571 7.4 19.5
COLOR (PLAT INUM- COBALT UNITS)
<1
BID-ITY
(NTU)
.60
DIS SOLVED (MG/L)
7.A
OXYGEN, OXYGEN COLI-
SOLVED BIO-TUR- OXYGEN, (PER
CENT SATUR ATION)
82
CHEM ICAL, 5 DAY (MG/L)
.2
.0.7
STREP-DIS- DEMAND, FORM, TOCOCCI
FECAL, FECAL,
K7
KF AGARUM-MF (COLS.(COLS./ PER100 ML) 100 ML)
130
DATE
MAR02...
HARDNESS(MG/LASCAC03)
260
HARDNESS,
NONCAR-BONATE(MG/LCAC03)
25
CALCIUMDISSOLVED(MG/LAS CA)
73
MAGNE SIUM, SODIUM,
SODIUM POTAS- ALKA-
DIS- SOLVED (MG/L AS MG)
20
DIS SOLVED (MG/L AS NA)
15
AD SORP TION
RATIO
.4
SIUM, LINITY SULFATEDIS
SOLVED (MG/L AS K)
1.2
FIELD DIS-(MG/L SOLVEDAS (MG/LCAC03) AS S04)
240 29
CHLO RIDE, DIS SOLVED (MG/L AS CL)
26
FLUO- RIDE, DIS
SOLVED (MG/L AS F)
.20
DATE
MAR 02...
SILICA,DISSOLVED(MG/LAS
SI02)
SOLIDS,SUM OFCONSTITUENTS ,
DISSOLVED(MG/L)
SOLIDS,RESIDUEAT 105DEC. C,SUS
PENDED(MG/L)
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
NITROGEN,
NITRITETOTAL(MG/LAS N)
NITROGEN,
N02+N03TOTAL(MG/LAS N)
NITROGEN,
AMMONIATOTAL(MG/LAS N)
NITROGEN,
ORGANICTOTAL(MG/LAS N)
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
PHOSPHORUS ,TOTAL(MG/LAS P)
CARBON ,ORGANICTOTAL(MG/LAS C)
9.3 318 <1 <.020 .90 .120 .18 .30 .030 1.2
DATE
MAR 02...
TIME
1000
ARSENICDIS
SOLVED(UG/L AS AS)
BARIUM,DIS
SOLVED(UG/L AS BA)
CADMIUMDISSOLVED(UG/L AS CD)
CHROMIUM,DISSOLVED(UG/L AS CR)
COPPER,DISSOLVED(UG/L AS CU)
IRON,DIS
SOLVED(UG/L AS FE)
<1 43 <1 <1 <3
DATE
MAR 02...
LEAD,DIS
SOLVED(UG/L AS PB)
MANGANESE,DIS
SOLVED(UG/L AS MN)
MERCURYDIS
SOLVED(UG/L AS HG)
SELENIUM,DIS
SOLVED(UG/L AS SE)
SILVER,DIS
SOLVED(UG/L AS AG)
ZINC,DIS
SOLVED(UG/L AS ZN)
<1 <1 <1
-58-
08155550 WEST BOULDIN CREEK AT RIVERSIDE DRIVE, AUSTIN, TEX. (Flood-hydrograph partial-record gage)
LOCATION. Lat 30°15'49", long 97°45'17", Travis County, on upstream side of eastbound bridge on Riverside Drive, U.I mi east of the intersection of South Lamar Boulevard and Riverside Drive and 1.2 mi southwest of the State Capitol Building in Austin.
DRAINAGE AREA. 3.12 mi 2 .
PERIOD OF RECORD. August 1975 to current year.
REVISED RECORDS. Open-file report 82-506: 1977 maximum.
GAGE.--Digital water-stage recorder and crest-stage gage. Datum of gage is 434.42 ft NGVD. Prior to March 31, 1977, at site 30 ft downstream at same datum.
REMARKS. Records fair.
EXTREMES FOR CURRENT YEAR. Maximum discharge, 216 ft3 /s May 11 (gage height, 282 ft).
-59-
STA. NO.Gb15555u
STORM RAINFALL
A is, D
RuMGF= RECORC
193: WATER YEAR
WEST dOJLJIN CR
EEK.
AT RIVERSIDE DRIVE/'
AUSTIN/ TEXAS
STORM OF MAY 1C, 19o3
DAT-:
& TIME
MAY 1C
0000
0 2 5 C
1515
2c4G
2245
2250
2300
2303
2310
2315
2320
2325
235o
2335
2340
2545
2350
2355
2*00
MAY
11o uO J
C015
OJ25
0030
DC- 3 5
OC40
0045
0055
0110
0115
01 40
0155
Ot30
GyD'
J0415
0530
0545
G555
2 tGO
------------------------------G A
G
160L
| |
G.G
0.01
0.13
0.1
30.19
0.20
0.24
0.29
0 . 4 G
0.7o
G. 9o
1 .02
1 .03
1 .1
51 .1d
1 .45
1 . =
32.20
2.25
2.23
2.25
2.31
2.35
2.33
2.33
2.34
.i.
m 3 H
2.34
2 . 3^»
2.34
2.34
2.34
2.3*.
c.3*
2.34
? T
ii .
5 4
2. ?*
1
E NUMB
I 1
1
A C C U M
. WEIGHTED
PRiCIP.
IN. O.C
0.01
0.13
0.13
0.19
0.20
0.2t
0.29
0 . « G
0.7o
0.96
1.02
1 .Go
1.15
1.15
1 .4
51.9S
2.2u
2.25
2.25
2.25
2.31
2.33
2.33
2.33
2.34
2.3^
2.34
2.34
2. 5*
2.34
2.34
2.34
2. 34
2.34
2.U
2.3-*
2.34
DISCHARGE
IN
C^S
0.0
0.0
0.0
0.0
0.0
0.5
1 .2
1 .3
2.2
1 1 .0
20.0
39.0
33.0
33.0
27. C
25.0
21 .0
43.0
141 .0
141 .0
161 .0
201 .0
275. C
207.C
209.0
1d5.0
193.0
150.0
142.0
73.0
51 .0
32.0
24.0
S.O
0.7
:.2
0.0
0.0
ACCUM.
RUNOFF
IN.
O.u
O.C
0.0
0.0
0.0
0.0000
0.0001
0.0002
0.0003
0.0007
0.0016
0.0032
0.0047
0.0001
0 .0072
0.0033
0.0091
0.0109
O.u1a2
0.0182
0.0392
0.0517
0.0631
C . 0
7 1 7
0.0303
0.091S
0.1120
0.1244
0.1 420
0.1541
0.1647
0.1733
0.1S57
0.13a7
0.18S9
0.1&90
0.1d90
0.1
3 90
COLORADO RIVER BASIN
08156700 SHOAL CREEK AT NORTHWEST PARK, AUSTIN, TX
LOCATION.--Lat 30°20'50", long 97°44'41", Travis County, Hydrologic Unit 12090205, at Northwest Park in Austin, 400 ft upstream from Shoal Creek Boulevard bridge, 0.5 mi west of intersection of Burnet Road and Justin Lane, and 5.0 mi north of State Capitol Building in Austin.
DRAINAGE AREA.--6.52 mi".
PERIOD OF RECORD.--March 1975 to current year.
GAGE.--Water-stage recorder. Datum of gage is 661.34 ft National Geodetic Vertical Datum of 1929 (city of Austin bench mark).
REMARKS.--Records fair. The city of Austin diverts water into channel above gage during the summer months from a swimming pool at Northwest Park. There is some diversion into and out of the drainage area by storm sewers. This station is part of a hydrologic project to study the rainfall-runoff, relationship for the Austin urban area. There are two recording rain gages in the watershed upstream from station. Several observations of water temper- ture were made during the year.
AVERAGE DISCHARGE.--8 years, 3.25 ft 3 /s (6.77 in/yr), 2,350 acre-ft/yr.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge. 14,600 ft 3 /s May 24, 1981 (gage height, 18.00 ft), from rating curve extended above 1,100 ft 3 /s on basis of slope-area measurement of 14,600 ft 3 /s; no flow for several days each year except 1981 and 1983.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage since 1885, occurred Apr. 22, 1915 (stage and discharge unknown). Flood on Sept. 9, 1921, was probably lower than the 1915 flood.
EXTREMES FOR CURRENT YEAR.--Peak discharges above base of 750 ft 3 /s and maximum (*):
Date Time Discharge Gage height Date Time
May 10 June 4 June 25
240023451515
Discharge (ft 3 /s)
1 ,250911879
Gage height (ft)
7.356.166.04
Aug. Aug. 19
13300900
Discharg'e (ft 3 /s)
*1,670 882
Gage height (ft)
8.506.05
Minimum daily discharge, 0.01 ft 3 /s Nov. 15-18, 20-22, Dec. 4-9.
DISCHARGE, IN CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINCFSMIN.AC-FT
OCT
.05
.04
.04
.03
.03
.17
.60
.08 2.1 .07
.12 1.5 .08 .04 .04
.04
.04
.04
.04
.04
.04
.04
.04
.04
.04
.04
.04 9.2 .85 .04 .04
15.60.509.2.03.08.0931
18
NOV
.04 I.92 .05 .04
.04
.04
.04
.03
.04
.03
.02
.02
.02
.01
.01
.01
.01
.08
.01
.01
.01
.42
.17
.17
DEC FEE
12.28 .17 .14 .12
32.95.1018
.01
.1 7
.1965
CAL YR 1982 TOTAL 1028.17 WTR YR 1983 TOTAL 1246.12
.08
.05
.07
.01
.01
.01
.01
.01
.01
.44
1 .8.33.17.17.17
.17
.17
.17
.16
.12
.12
.12
.12
.12
.12
.371 .4.28.17.12.37
7.44.241 .8.01.04.0415
MEANMEAN
4.5.43.37.37.37
.32
.32
.32
.32
.32
.32
.32
.32
.32
.28
.28
.282.7.64.20
.40
.17
.14
.14
.14
.14
.14
.14
.14
.14
.14
15.13.494.5.14.08.0930
2.823.41
.14
.15
.152.86.7
.28
.17
.1733
.41
.19
.15
.12
.1221
.32
.18
.14
.12
.49
.15
.11
.10
.10
.10
.10
.10
.10__.>_ __---
67.662.42
33.10.37.39134
MAX 392MAX 104
MAR
.10
.10
.10 9.7 .20
.12
.17
.17 9.9 .24
.17
.20
.20
.2450
301 .3.79
9.52.3
.81
.69692.01 .4
401 .91 .41.4
131.5
248.608.02
69.10
1.231 .42493
MIN .00 MIN .01
APR MAY JUN JUL
1 .11.01 .11.41 .4
1 .411
.68
.68
.61
.61
.61
.54
.48
.48
.42
.42
.37
.42
.42
.48
.37
.28
.28
.28
.20
.20
.17
.12
.12---
27.64.9211
.12
.14
.1655
CFSMCFSM
.12
.13
.12
.12
.08
.08
.08
.08
.1226
51.60.53.43
5.1
.61
.6013
.7779
591.5.96.80.75
.65
.48
.48
.48
.541 .8
246.017.94
79.08
1.221.40488
.43 IN
.52 IN
.59
.54
.542147
351 .9.93.86.82
.82
.72
.75491.3
13.71.38.32.42
.37
.32
.47
.3147
.79
.29
.42
.26
.17
227.007.57
49.17
1.161.29450
5.87 AC-FT7.11 AC-FT
.17
.16
.12
.08
.18
.26
.15
.14
.10
.10
.07
.07
.086.0
11
36.42.21.13.1 1
.10
.10
.10
.08
.08
.08
.08
.08
.08
.08
.07
56.481 .82
36.07.28.32112
20402470
19
AUG
.07
.07
.07
.78
.12
.11104
1 .4.22
.15
.15
.15
.15
.15
.11
.10
.1055
.36
.15
.12
.15
.15
.10
.10
.12
.12
.15
.20
.20
183.825.93104.07.91
1.05365
SEP
.17
.13
.12
.12
.12
.08
.21
.21115.9
.38
.08
.08
.22
.12
.10
.102077
.51
.12
.12
.12
.12
.12
.20
.10
.08
.08
.08
117.793.93
77.08.60.67234
-61-
o o o t_i o o c.'-» O C.i C' C t
3;io K> i\j PJ ro fvj rx, fvi rv> ix> rvj r\) ru rv> * c.' o O £> 01 L<J v. »-" i" ^- rv io rv ix. r.. fx, r-. ix, 4* o ix c> -«. r\j i j » » o O wi <-<i 4- 4^ oj 01 rv) 10 4- o -f- O ui O 0' t.i VJ-. C) Ui CJ u. o <~" c. u^ c> C"' c_- U' o '
O
or cn- r oc
o o o o o o o o o CD o o cj
o c» ->j o ^.n v.r r- i'i rv." rvj » o O
C J O O O O O f J C) O >_)
i~ V txi > LJ O O C_) O O O CJ O
in IIO (IO II
O O O <-J O O O O O O O t: "O U! O O- O. (« ft. U 4> Ui OM LrJ fV O
uc O? IV! O" --J O I.M O ~vl o^ OM tV <J O- l«. "vl
_> o o o o o o o o c.' o o o o o o
O '» v> >J> < - U4 UJ f"J » > O O O <_) O O » c' OJ -vi uj o c.i o -^ rv. >o o 4- < >
II n m c' f i
U4 4> 4> 4^ VJ1 >-" 01 i> CO O O O Ou- -» * "M o I.AI V.M u' O oa -M oj -vj
II OOOOOOCJOOOOOOO
O 'O ->J Cr- ~j r>.j ^i 04(jo t>- Oi oa >o 4-CJ 4^* ty P-J IO U-J V »-> O^ C5 O«4 C_) ^J1* ^ V^J * < * C_> CJ CJ CJ Cj CJ CJ ClJ C_>
O O O O CJ O O O O O O O UJ OJ ->1 ro rj to ro rv) r-j OJ -> » »
II On -nII l/l
II O O C) O O O C) O C-' O O O O f_i
II 00 (>.' fo -»
OOOCOOC.iOC_)OOOCJOOOOOOOC/C:OOO
* O CJ CJ O C." O O CJ O CJ O O O O O O O O C"J C> C3 O C'J O
m O 1>J >o 4^ O L»! ->J Ui v/i <i > f\J » CJ O O fl O O O O' 1>J * O
I n I 2:
II IIII ft II <tII 111II >- IIii ar II ui n ( -
O II O
iry oo O O r- in C> O O O II u
5" u.ID C
o -<t Or
ui (.0nf
T Z
i/l» 4
n
ny H -3 i o o - t
o
N
O
IL 0
O
i/>
XI1J»
o
s ^fif -I
O
1
111
-to r
1/1
)
>
A
3 J O
: <. > 1 Oj ac
r
:
i
<
t
^
1/1 u
J ZJ H
fL
1C
Q
T
^
U
3
3
fv)
*
U
1h
1 rvi rvi IA rO f"> *O ro fo r-o HI Hi ro ro co fo r^ ft II
1 C5 O 0 0 O 0 O 0 0 0 0 0 O 0 0 -D O II 1 II 1 II
1 O O O O O O O O CJ O O --t O- \f\ -4 O OO 1
I txj r>- ri o N. in T 10 ^ r\i » I 1 ro rvi fvj r- » r- » 1 1 1 1 1 1 1 1
1 I 10 no r2j r> <*>» (^ ry«. rvi *o ro ^o *f -t -t m i^"i IA1 OO<-1OC>OO<-T-,-«-«-«-T-«-T-T-
i f\i rvi r\( (NJ rvj '\j r\( rj .*\| r\( r\( fvi rvi rvj r\( rvi «j 1 1 i 1 1 1 1 1 i
1 1 1 1 i 1 i 1 1 1 1 1 i 1 i 1 i i 1 1 1
i1 1 I
1 1 1 1 1 I
1 1 i 1
1 1 1
i 11 1 I
1 i 1 1 1 1 i i 1 I 1 I
1 1 1
i 1 1 1 1 1 1 1 1
II '1
1 II
1
I
1 O O 0 {>- r> > O- -4 i ~S 4 -J- * -» -t -t tI ( ^ rvi rvi r\i fvj r*j r\i t^\ HI to r^\ to ?s\ p/-i f^ f-i ro
1 r\j rvj rvj r»j -\i ( j i"\i rvi r\i r^j <vj fvi rvi (\j rvi r\j rvj 1 1
II n
i 1 1 1 ' HI ro -*-*.*.» in N. O <o O O O « *-« I r<j or> TO 'O ro on no <j~i >» rn ta'J O O O c> O Cf-
1 1 1I
' 1 11 T
r- .-5 :> o A (A .A > '-j o o '~> o o -) '.-> o o
1 «1 O ' J O O O O o O o o O O C") »- T »- rj
i i n n
-63-
COLORADO RIVER BASIN
08156800 SHOAL CREEK AT 1 2TH STREET, AUSTIN, XX (Flood-hydrograph partial-record station)
LOCATION. --Lat 30°16'35", long 97°45'00", Travis County, Hydrologic Unit 12090205, at downstream side of bridge on 12th Street and 0.6 mi west of the State Capitol Building in Austin.
DRAINAGE AREA. --12. 3 mi 2 .
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. April 1975 to current year. Periodic discharge measurements only: November 1974 to current year.
GAGE. --Flood-hydrograph recorder and crest-stage gage. Datum of gage is 455.33 ft National Geodetic Vertical Datum of 1929.
REMARKS. Additional storm rainfall-runoff data for this site can be obtained from the latest report, "Hydrologic Data for Urban Studies in the Austin, Texas Metropolitan Area, 1983." Two recording rain gages are located in the water shed above this site.
EXTREMES FOR PERIOD OF RECORD. Maximum discharge, 16,000 fH/s May 24, 1981 (gage height, 23.22 ft).
EXTREMES FOR CURRENT YEAR. --Maximum discharge, 1,980 ft 3 /s Aug. 8 at 1430 hours (gage height, 10.72 ft).
WATER-QUALITY RECORDS
PEPIOD OF RECORD. Chemical, biochemical, and pesticide analyses: January 1975 to current year. January 1975 to current year. Radiochemical analyses: October 1979 to September 1980.
Water temperatures:
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEE28...
MAR23...
MAY20.. .20...
AUG08...
SEP07...
DATE
FEE28...
MAR23...
MAY20...20...
AUG08...
SEP07...
TIME
0935
1030
14451500
1303
1640
HARDNESS(MG/LASCAC03)
250
72
STREAM-FLOW ,INSTANTANEOUS(CFS)
.58
300
258760
403
16
HARDNESS,
NONCAR-BONATE(MG/LCAC03)
118
18
SPECIFICCONDUCTANCE(UKHOS)
649
174
186165
62
219
CALCIUMDISSOLVED(MG/LAS CA)
87
26
PH(STANDARD
UNITS)
8.1
7.6
__
--
.
7.8
MAGNESIUM,DIS
SOLVED(MG/LAS MG)
7.4
1.6
TEMPERATURE(DEC C)
9.5
11.0
__--
--
26.0
SODIUM,DIS
SOLVED(MG/LAS NA)
32
3.2
COLOR(PLAT-IUUM-C OB ALTUNITS)
<1
50
__--
--
70
SODIUMAD
SORPTIONRATIO
.9
.2
TURBIDITY
(NTU)
9.9
160
__--
--
200
POTASSIUM,DIS
SOLVED(MG/LAS K)
2.9
2.1
OXYGEN,DIS
SOLVED(MG/L)
11 .9
__--
--
7.6
ALKALINITYFIELD(MG/LASCAC03)
130
54
OXYGEN, DIS
SOLVED(PERCENT
SATURATION)
106
--
__--
--
94
SULFATEDISSOLVED(MG/L
AS S04)
110
17
OXYGEN DEMAND,BIOCHEMICAL,5 DAY(KC/L)
.4
3.1
37--
7.8
14
CHLORIDE,DISSOLVED(MG/LAS CL)
64
5.0
COLI- FORM,FECAL,0.7UM-MF(COLS./100 ML)
2000
11000
K190000--
940000
69000
FLUO-RIDE.DIS
SOLVED(MG/LAS F)
.30
<.10
STREP TOCOCCIFECAL,
KF AGAR(COLS.
PER100 ML)
2100
78000
490000--
640000
460000
SILICA,DISSOLVED(MG/LASS102)
.5
3.7
86 27 31 2.1 .4 4.0 59 26 15 .10 4.9
DATE
FEB28...
MAR23...
MAY20...20...
AUG08...
SEP07...
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
382
91
__
127
SOLIDS,RESIDUEAT 105DEC. C,SUS
PENDED(MG/L)
12
192
____
385
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
. <1
64
__ '
__
129
NITROGEN,
NITRATETOTAL(MG/LAS N)
__
.35
.27__
.35
.80
NITROGEN,
NITRITETOTAL(MG/LAS N)
<.020
.050
.230__
.050
.100
-64-
NITROGEN,
N02+N03TOTAL(MG/LAS N)
<.10
.40
.50__
.40
.90
NITROGEN,
AMMONIATOTAL(MG/LAS N)
.080
.180
.670__
.230
.270
NITROGEN,
ORGANICTOTAL(MG/LAS N)
.42
1.1
8.1__
3.6
1.2
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
.50
1.30
8.80__
3.80
1.50
PHOSPHORUS,TOTAL(MG/LAS P)
.050
.290
.700__
1.10
.440
CARBON,ORGANICTOTAL(MG/LAS C)
1.9
10
29__
28
15
COLORADO RIVER BASIN
08156800 SHOAL CREEK AT 12TH STREET, AUSTIN, TX Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB28...
MAR23...
MAY20...
SEP07...
TIME
0935
1030
1445
1640
ARSENICDIS
SOLVED(UG/L AS AS)
BARIUM,DIS
SOLVED(UG/L AS BA)
CADMIUMDIS
SOLVED(UG/L AS CD)
CHROMIUM,DISSOLVED(UG/L AS CR)
COPPER,DISSOLVED(UG/L AS CU)
IRON,DIS
SOLVED(UG/L AS FE)
<112
1
60
17
26
23
<1
<1
<1
<1
10
<10
<10
10
<3
63
59
54
DATE
FEB28...
MAR23...
MAY20...
SEP07...
LEAD,DIS
SOLVED(UG/LAS PB)
MANGANESE,DIS
SOLVED(UG/LAS MN)
MERCURYDIS
SOLVED(UG/LAS HG)
SELENIUM,DIS
SOLVED(UG/LAS SE)
SILVER,DIS
SOLVED(UG/LAS AG)
ZINC,DIS
SOLVED(UG/LAS ZN)
<.1 <.1
5
3
11
10
DATE
MAR23...
MAY20...
TIME
1030
1500
AME-TRYNETOTAL
ATRA- TONE TOTAL (UG/L)
ATRA- CYAN-ZINE, AZINETOTAL TOTAL(UG/L) (UG/L)
10
CYPRA-ZINETOTAL(UG/L)
METHO- PROKE-MYL TONE
TOTAL TOTAL(UG/L) (UG/L)
<2.0 .1
.4
DATE
MAR23...
MAY20. . .
PROME- PRO-TRYNE PAZINETOTAL TOTAL(UG/L) (UG/L)
PROPHAK TOTAL <UG/L)
<2.0
SEVIN. TOTAL
SIMA-ZINE
TOTAL
SIME- SIME-TONE TRYNETOTAL TOTAL
(UG/L) (UG/L) (UG/L) (UG/L)
<2.0 .20
-65-
-99-
I o C j C.) o (~> O 00000 O oi * » c> f - c.' C.j <-> cj o ci » i.; c_> ui 01 * * iyi 0-4 r\j r
O X' r\jo c o O -< 4 » » o O cj
ro ro » O o *- li
» to o v/>
» » O C , CJ l_J O O O O CJ O O O O O O
* O -o fa -~-i O ' n >_n 4 - t~" f\J r>J » O C J f j O
CJ CJ i.) O O OO Ci O O O O CJ rj O
-» CJ C. O O O O O i.J
CJ O l_> C"1 O O O O
-» -» O LJ C.} O CJ O
CJ C_l O O O O O O O O O C"i *^J >> *O
O O a O O CJ O (J l_> O O O O O OO CJ O O
i>j ra *- o oo cr. »o «o t-y -M -»'O fo ro Ur4 Ul OO (.-J Oi tx» \J IX)
O O O t_> O O O O CJ O O
-f~ IV O O O O O
ro O V IM fNJ W O
CJ CJ O O C C- C> CJ CJ C O O O C) C.
ro r\_« r\j * ^ ^ * * ~^ * c.' Cj C-* CJ d
Cn O; U. O -o IN- V C1 <J- -t" r\J -» C_. <. CX
C' O C-> O O <_ O O O O C' O O
O O O O O O O O O O CJ O Cj
(_3 O O O O O O O O CJ
O O O O O O O O O O CC- O CJ CJ O C.) O O O CJrv -» o O o o O O O O
*3 IJ<_ o
n *i O2- o c: Tl 3
nj
-O N- -T I \l O >n -.f u"» -O -O
O O O C 5 O II
o o o o o r> o o o o o o o o o o o o
o o o o o o o o o o o o o o o o o o r.i
o o O o o N. o rvi «o m T- m <r, m t\i o-> T T- O 10 m ,». o r.J
r> f\i N o o ir> o if o IA rj «.:> o O r- O * "> u) in r\j r-
O TT OO _ > nio >-< rv:
i'M »M (M r-J n (\l fVI fM r\l
-67-
COLORADO RIVER BASIN
08158050 BOGGY CREEK AT U.S. HIGHWAY 183, AUSTIN, TX
LOCATION.--Lat 30°15'47", long 97°40'20", Travis County, Hydrologic Unit 12090205, on U.S. Highway 183, 1.6 mi south of the intersection of Webberville Road and U.S. Highway 183, 4.1 mi east of the State Capitol Building in Austin, and 0.7 mi upstream from mouth.
DRAINAGE AREA.--13.1 mi 2 .
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. January to July 1975 (periodic discharge measurements only), August 1975 to June 1977 (operated as a flood-hydrograph partial-record station only), June 1977 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 411.29 ft National Geodetic Vertical Datum of 1929 (levels from city of Austin bench mark).
REMARKS.-- Water-discharge records fair. No known regulation or diversions. The station is part of a hydrologic research project to study the rainfall-runoff relationship for the Austin urban area. Station is equipped with an automatic water-quality sampler. There is a recording rain gage in the watershed.
AVERAGE DISCHARGE. 6 years (water years 1978-83), 6.72 ft 3 /s (6.97 in/yr) 4,870 acre-ft/yr.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 6,100 ft 3 /s May 23, 1975 (gage height, 17.03 ft, from floodmark), from rating curve extended above 500 ft 3 /s on basis of slope-area measurement of peak flow; no flow at times each year.
EXTREMES FOR CURRENT YEAR.--Peak discharge above base of 1,500 ft 3 /s and Maximum (*):
Date
Feb. 9May 1 1 May 20
Time
1100 0100 1530
Discharge (ft 3 /s)
1 ,610 2,130
*2,500
Gage height (ft)
a/ 10.5 a/ 11.3 a/ 1 1 .8
Date
May 21 June 5 Aug. 8
Time
090001001400
Discharge (ft 3 /s)
1 ,6102,3402.130
a/ Adjusted for draw down.
Minimum daily discharge, no flow for many days.
Gage height (ft)
a/ 10.5a/ 11.6a / 11.3
DISCHARGE, IN CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983KEAN VALUES
DAY
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINCFSMIN.AC-FT
CAL YRWTR YR
OCX
.00
.00 29
.00 15
.00
.00
.005.09.6.71
13
.4911 152.2 12.72 6.68
.01
.00 3
.00
.00
.00
.00
.00
.00 24
.00 17
.00 1
.00 73
.00 14
.6322
.34
.22
66.60 2122.15 7
22.00.16.19132
1982 TOTAL1983 TOTAL
NOV
.00
.40
.34
.34
.34
.05
.00
.00
.00
.4
.82
.00
.2
.06
.00
.00
.00
.00
.2
'.28
.18
.12
...
.73
.0973
.00
.54
.60422
13202552
DEC
.12
.1825
.86
.65
.40
.34
.37
.405.3
6.9.31.21.18.15
.12
.10
.12
.10
.11
.10
.10
.09
.09
.10
.1811
.31
.15
.21
.34
54.591.76
25.09.13.16108
.45 MEAN
.90 MEAN
JAN
39.98.47.40.31
.28
.23
.23
.18
.17
.17
.17
.17
.17
.17
.17
.1424112.6
6.6.86.86.98.51
.37
.28
.23
.23
.28
.28
92.492.98
39.14.23.26183
3.626.99
FEB
.28
.18
.37
.67127
1.5.98.75
1533.6
2.31.81.81.5
35
1 .91.31.2.98
1.3
.98
.92
.92
.92
.86
.80
.86
.86___......
344.5312.3153.18.94.98683
MAX 239MAX 21£
MAR
.86
.86
.86323.4
2.72.22.0
182.6
2.22.33.02.9
83
707.25.3
191 1
4.42.7
1656.45.4
1003.32.11 .8
101.1
573.5818.5165.86
1.411.631140
MINMIN
APR
.75
.55
.55
.55
.55
.44
.40
.47
.40
.44
.40
.40
.34
.28
.31
.34
.31
.23
.23
.17
.31
.28
.17
.09
.23
.17
.09
.09
.11
.14
...
9.79.33.75.09.03.0319
.00 CFSM
.00 CFSM
MAY
.14
.12
.06
.06
.06
.06
.08
.08
.44
.35
1775.23.83.7
17
3.12.44.74.1
216
1121.71.1.87.65
.61
.56
.64
.75
.67
.90
558.9018.0216.06
1.371.591110
.28
.53
JUN
.70
.68
.62
.66175
131 .5.84.64.55
.48
.48
.433.21.1
5.2.69.35.36.31
.28
.31
.36
.4318
.87
.40
.34
.42
.38---
228.587.62175.28.58.65453
IN 3.75IN 7.25
JUL
.34
.30
.25
.25
.32
.38
.33
.28
.27
.27
.21
.20
.231412
732.1.96.62.47
.60
.55
.45
.24
.36
.18
.20
.32
.21
.21
.21
110.313.56
73.18.27.31219
AC-FT 2620AC-FT 5060
AUG
.10
.05
.10
.74
.96
1.8.78
1793.01.6
1.11 .1.87.70
1.1
.60
.65
.64171.2
.80
.85
.43
.48
.43
.89
.41
.05
.36
.03
.00
217.827.03179.00.54.62432
SEP
.00
.00
.00
.00
.00
.001.01.21 .61.1
.76
.17
.02
.63
.54
.04
.0012572.1
.84
.70
.70
.70
.60
.31
.30
.25
.24
.18---
82.982.77
57.00.21.24165
-68-
COLORADO RIVER BASIN
08158050 BOGGY CREEK AT U.S. HIGHWAY 183, AUSTIN, TX Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Chemical, biochemical, and pesticide analyses: January 1975 to current year, ses: October 1979 to September 1980.
Radiochemical analy-
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB28...
MAR04...
MAY20...20...20...20...20...20...
DATE
FEB28...
MAR04...
MAY20...20...20...20...20...20...
TIME
1320
1300
144014551510152515401555
220
100
6969
STREAM-FLOW,INSTANTANEOUS(CFS)
1.2
106
260853114011001010931
HARDNESS,
NONCAR-BONATE(MG/LCAC03)
63
21
CIFICCONDUCTANCE(UMHOS)
590
238
207202170172172143
CALCIUMDISSOLVED(MG/LAS CA)
73
36
SPE-
PH (STAND- TEMPER-ARD ATURE
UNITS) (DEG C)
COLOR(PLAT INUM- COBALT UNITS)
TUR BID ITY
(NTU)
OXYGEN , DIS
SOLVED (MG/L)
OXYGEN,DISSOLVED(PER CENT
SATUR ATION)
OXYGENDEMAND,BIOCHEM ICAL, 5 DAY (MG/L)
COLI-FORM,FECAL,0.7 UM-MF (COLS./ 100 ML)
STREPTOCOCCIFECAL,
KF AGAR (COLS . PER
100 ML)
8.4
8.4
7.7 7.7
18.0
18.5 25
2.4
480
19.7
7.8
212
86
40 120040 1200
.8
17
373438201517
K63 K68
62000 97000
K290000 K1 900000K290000 K1 900000K280000 900000K280000 900000
__K230000 K1 400000
HARD NESS (MG/L AS
CAC03)
HARD NESS,
NONCAR- BONATE (MG/L CAC03)
CALCIUM DIS SOLVED (MG/L AS CA)
MAGNE SIUM, DIS
SOLVED (MG/L AS MG)
"SODIUM, DIS
SOLVED (MG/L AS NA)
SODIUM AD
SORP TION
RATIO
POTAS SIUM, DIS
SOLVED (MG/L AS K)
ALKA LINITY FIELD (MG/L AS
CAC03)
SULFATE DIS SOLVED (MG/L
AS S04)
CHLO RIDE, DIS SOLVED (MG/L AS CL)
FLUO- RIDE, DIS
SOLVED (MG/L AS F)
SILICA, DIS SOLVED (MG/L AS SI02)
2525
9.9
2.4
1.7 1.7
33
9.8
7.0 7.0
1.0
.4
.4
.4
2.6
2.9
3.6 3.6
160
79
6666
83
22
1414
43
13
5.4 5.4
.30
.20
.20
.20
4.6
6.0
6.8 6.8
DATE
FEB28...
MAR04...
MAY20...20...20...20...20...20...
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
SOLIDS,RESIDUEAT 105DEC. C,SUS
PENDED(MG/L)
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
NITROGEN,
NITRATETOTAL(MG/LAS N)
NITROGEN,
NITRITETOTAL(MG/LAS N)
NITROGEN,
N02+N03TOTAL(MG/LAS N)
NITROGEN,
AMMONIATOTAL(MG/LAS N)
NITROGEN,
ORGANICTOTAL(MG/LAS N)
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
PHOSPHORUS,TOTAL(MG/LAS P)
CARBON ,ORGANICTOTAL(MG/LAS C)
345
140
8
564
103103 468
468396396
.21
.35
.35
.35
.35
.35
<.020
.190
.050
.050
.050
.050
.050
.40
.40
.40
.40
.40
.40
.120
.500
.610
.610
.470
.470
.380
.48
2.4
2.1 2.1 1.8 1.8
3.2
.60
2.90
3.60
.040
.950
.500
.500
.770
.770
.930
2.2
29
53536161
43
-69-
COLORADO RIVER BASIN
08158050 BOGGY CREEK AT U.S. HIGHWAY 183. AUSTIN, TX Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB28...
MAR04...
MAY20...20...20...
TIME
1320
1300
144014551555
ARSENICDIS- SOLVED (UG/L
BARIUM,DIS-
SOLVED(UG/L
CADMIUMDIS-
SOLVED (UG/L
CHRO-MIUM,DIS-SOLVED(UG/L
COPPER, DIS- SOLVED (UG/L
83
36
200200
<100
IRON,DIS
SOLVED(UG/L
AS AS) AS BA) AS CD) AS CR) AS CU) AS FE)
<3
76
707080
DATE
FEB28...
MAR04...
MAY20...20...20...
LEAD,DIS
SOLVED(UG/L AS PB)
MANGANESE,DIS
SOLVED(UG/L AS MN)
MERCURYDIS
SOLVED(UG/L AS HG)
SELENIUM,DIS
SOLVED(UG/L AS SE)
SILVER,DIS
SOLVED(UG/L AS AG)
ZINC,DIS
SOLVED(UG/L AS ZN)
6
8
101010
DATE
MAR04...
MAY20...20...
TIME
1300
14551510
AME-TRYNETOTAL
ATRA- TONE TOTAL (UG/L)
ATRA- CYAN-ZINE, AZINETOTAL TOTAL(UG/L) (UG/L)
.30
.30
CYPRA- ZINE TOTAL (UG/L)
METHO- PROME-MYL TONE
TOTAL TOTAL(UG/L) (UG/L)
<2.0 1.7
2.4 2.4
PROME- PRO-TRYNE PAZINE PROPHAM SEVIN,TOTAL TOTAL TOTAL TOTAL
DATE (UG/L) (UG/L) (UG/L) (UG/L)
MAR04... <.1 <.10 <2.0 <2.0
MAY20... <.1 <.1020... <.1 <.10
SIMA- SIME-ZINE TONE
TOTAL TOTAL(UG/L) (UG/L)
.10
SIME- TRYNE TOTAL (UG/L)
-70-
-u-
c> o o o c io f _> < j o n c' c ci c. c.
ru oO-.' C
f\J CJ
-> «.> C/ O-
o o o o
1 Vi » O Cj
-»-»-»-»-> oooo
t 01 tr4 IV O VI -» O O
o :L c;H. -H ISTJ in
-J f-J l\ )[_ * <7- INJ U' -T *Nl HJ » *^lo *~ O r\> » -si O O U1 CJ *^ O IVI
C.t O O O O i D O O t } O O O OCJ O f J O CJ O O O O O CJ
f\j (\J INJ I\J » » ' O O CD Cj
O OJ O O ->J O4 O ><1 ->J O O-
II O CJ C. C) C. O CJ O O O OC' O O O O O O CJ C' CJO O C: O CJ C. CJ O O O CJ C. O O CJ O
_»-»_>_»_»-».-»-»->-»-» L i C O C, O O O CJ C' O C CJ C, CJ O C; O CJ O O C C) C, O C- C, Oixi !.«. ^j o vi * - 01 01 INJ » o -4} u> ^i O- vi r- v/4 <sj » -» cj CJ cj cj cj o o c_> o o o r j cj o c.) o o
z. oC) C
O CJ O O
-2L-
l_i O O O CJ O O O O O (1 O O O O O OCo -vl (_v O v/> u> <_n 4. t- 4 f- o-i u. l^' C.-J I'J L-J<-H rj v/4 cj *- ro i_i * - \s-i » o ui 4. L»J ivj » o
rj <Ji » v-n » » (o r\j ~o m OJ >-fi *^ *^ ijJ O i^ *^ o
O c«> O O O O O O O O O O CD O C.I O O C) O
i o o o c_> o o o c.)o o o o o o c., o
i r\j rvi rv> ru iv> rv> rvi iv> rvi rv rv, ivi rv> rvi rv) iv. i\j rv: iv
i O- » O v/- OJ O u f- CJ t- -vl » wi o *- <; U' -»
i: r->o c:~ll .2
08158100 WALNUT CREEK AT FARM ROAD 1325 NEAR AUSTIN, TEX. (Flood-hydrograph partial-record gage)
LOCATION. Lat 30°24'35", long 97°42,41", Travis County, on downstream side of bridge on Farm Road 1325 and 9.5 mi north of the State Capitol Building in Austin.
DRAINAGE AREA. 12.6 mi 2 .
PERIOD OF RECORD.--May 1975 to current year.
GAGE. Digital water-stage recorder and crest-stage gage. Datum of gage is 670.62 ft NGVD.
REMARKS.--Records fair. No storms were analyzed for this station for the 1983 water year.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 15,000 ft3 /s May 24, 1981 (gage height, 19.46 ft).
EXTREMES FOR CURRENT YEAR.--Maximum discharge, 1,060 ft3 /s Aug. 8 (gage height, 8.95 ft).
-73-
COLORADO RIVER BASIN
08158200 WALNUT CREEK AT DESSAU ROAD, AUSTIN, TX (Flood-hydrograph partial-record station)
LOCATION.--Lat 30 0 22'30". long 97°39'37", Travis County, Hydrologic Unit 12090205, on downstream side of bridge on Dessau Road and 8.4 mi northeast of the State Capitol Building in Austin.
DRAINAGE AREA.--26.2 mi 2.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--May 1975 to current year.
GAGE.--Digital water-stage recorder and crest-stage gage. Datum of gage is 553.44 ft National Geodetic Vertical Datum of 1929.
REMARKS. Additional storm rainfall-runoff data for this site can be obtained from the report "Hydrologic Data for Urban Studies in the Austin, Texas Metropolitan Area, 1983". Two recording rain gages are located in the watershed.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 21,600 ft 3 /s May 25, 1981, gage height, 26.20 ft.
EXTREMES FOR CURRENT YEAR. Maximum discharge, 3,110 ft 3 /s Aug. 8 at 1500 hours (gage height, 13.25 ft).
WATER-QUALITY RECORDS
PERIOD OF RECORD. Chemical, biochemical, and pesticide analyses: October 1979 to current year.
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
OXYGEN, OXYGEN COLI- STREP-
DATE
FEE28...
MAR04...
DATE
FEE28...
MAR04...
TIME
1045
1415
HARDNESS(MG/LASCAC03)
270
220
STREAM-FLOW,INSTANTANEOUS(CFS)
6.9
27
HARDNESS,
NONCAR-BONATE(MG/LCAC03)
51
40
SPE CIFICCONDUCTANCE(UMHOS)
642
519
CALCIUMDISSOLVED(MG/LAS CA)
100
81
PH(STANDARD
UNITS)
8.4
8.0
MAGNESIUM,DIS
SOLVED(MG/LAS MG)
5.0
4.2
TEMPERATURE(DEC C)
11.0
17.5
SODIUM,DIS
SOLVED(MG/LAS NA)
25
20
COLOR(PLATINUM-COBALTUNITS)
<1
10
SODIUMAD
SORPTIONRATIO
.7
.6
TURBIDITY
(NTU)
.70
100
POTASSIUM,DIS
SOLVED(MG/LAS K)
1.9
2.3
OXYGEN,DIS
SOLVED(MG/L)
16.8
8.4
ALKALINITYFIELD(MG/LASCAC03)
220
180
DIS SOLVED(PERCENT
SATURATION)
156
91
SULFATEDISSOLVED(MG/L
AS S04)
51
40
DEMAND, BIOCHEMICAL,5 DAY(MG/L)
.6
5.1
CHLORIDE,DISSOLVED(MG/LAS CL)
42
32
FORM, FECAL,0.7UM-MF(COLS./100 ML)
96
2600
FLUO-RIDE,DIS
SOLVED(MG/LAS F)
.30
.30
TOCOCCI FECAL,
KF AGAR(COLS.
PER100 ML)
K71
3400
SILICA,DISSOLVED(MG/LAS
SI02)
2.8
5.9
SOLIDS, SOLIDS,SUM OF RESIDUE SOLIDSCONSTI- AT 105TUENTS, DEC. C,
DIS- SUS-SOLVED PENDED
DATE
FEB28...
MAR04... 294
360
VOLA TILE, SUS PENDED
(MG/L) (MG/L) (MG/L) AS N)
NITRO- NITRO- NITRO- NITRO- NITRO- NITRO- GEN.AM-GEN, GEN, GEN, GEN, GEN, MONIA + PHOS- CARBON,
NITRATE NITRITE N02+N03 AMMONIA ORGANIC ORGANIC PHORUS, ORGANIC TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L
158 26
1.4
1 .3
AS N)
.020
.040
AS N)
1.4
1.3
AS N) AS N)
.110
.180
.89
1.4
AS N)
1.00
1.60
AS P)
.070
.410
AS C)
2.2
8.0
-74-
COLORADO RIVER BASIN
08158200 WALNUT CREEK AT DESSAU ROAD, AUSTIN, TX Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
ARSENICDIS
SOLVED(UG/L AS AS)
BARIUM,DIS
SOLVED(UG/L AS BA)
CADMIUMDIS
SOLVED(UG/L AS CD)
CHROMIUM,DISSOLVED(UG/L AS CR)
COPPER,DISSOLVED(UG/L AS CU)
IRON,DIS
SOLVED(UG/L AS FE)
TIME DATE
FEB28... 1045 1 64 <1 <10 2 <3
MAR04... 1415 1 54 <1 <10 3 14
LEAD, DIS
SOLVED (UG/L AS PB)
MANGA NESE, DIS
SOLVED (UG/L AS MN)
MERCURY DIS SOLVED (UG/L AS HG)
SELE NIUM, DIS SOLVED (UG/L AS SE)
SILVER, DIS
SOLVED (UG/L AS AG)
ZINC, DIS
SOLVED (UG/L AS ZN)DATE
FEB28... <1 6 <.1 <1 <1 4
MAR04... 6 2 <.1 1 <1 9
ATRA- ATRA- CYAN- CYPRA- METHO- PROME-AME- TONE ZINE, AZINE ZINE MYL TONE
TIME TRYNE TOTAL TOTAL TOTAL TOTAL TOTAL TOTALDATE TOTAL (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
MAR 04... 1415 <.10 <.10 <.10 <.10 <.10 <2.0 .3
PROME- PRO- SIMA- SIME- SIME-TRYNE PAZINE PROPHAM SEVIN, ZINE TONE TRYNETOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL
DATE (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
MAR 04... <.1 <.10 <2.0 <2.0 <.10 <.10 <.1
-75-
08158300 FERGUSON BRANCH AT SPRINGOALE ROAD, AUSTIN, TEX. (Flood-hydrograph partial-record gage)
LOCATION. Lat 30°19'53", long 97°39'12", Travis County, on downstream side of culvert on Springdale Road and 6.5 ml northeast of the State Capitol Building in Austin.
DRAINAGE AREA.--1.63 mi 2 .
PERIOD OF RECORD. May 1975 to current year.
GAGE.--Digital water-stage recorder and crest-stage gage. Datum of gage is 509.64 ft NGVD.
REMARKS.--Because of insufficient data, no storms were analyzed for this station for the period of record.
EXTREMES FOR PERIOD OF RECORD. Maximum discharge 1,040 ft3 /s May 21, 1979 (gage height, 8.60 ft).
EXTREMES FOR CURRENT YEAR Maximum discharge occurred on May 20, 1983. Gage height and discharge were not determined.
-76-
08158380 LITTLE WALNUT CREEK AT GEORGIAN DRIVE, AUSTIN, TEXAS (Flood-hydrograph partial-record gage)
LOCATION.--Lat 30°2ri5", long 97°4r52", Travis County, on upstream side of bridge on Georgian Drive and 6.0 miles north of the State Capital Building in Austin.
DRAINAGE AREA. 5.22 nri 2.
PERIOD OF RECORD. February to September 1983.
GAGE.--Digital water-stage recorder and crest-stage gage. Datum of gage is 637.23 ft NGVD.
REMARKS. Because of insufficient data, no storms analyzed for this station.
EXTREMES FOR CURRENT YEAR. Maximum discharge 1,350 ft 3/s June 4 (gage height,
9.58 ft).
-77-
COLORADO RIVER BASIN
08158600 WALNUT CREEK AT WEBBERVILLE ROAD, AUSTIN, TX
LOCATION.--Lat 30e 16'59", long 97°39'17", Travis County, Hydrologic Unit 12090205, on left bank 190 ft downstream from bridge on Farm Road 969, 0.8 mi downstream from Little Walnut Creek, 2.8 mi upstream from Colorado River, 5.2 mi east of the State Capitol Building in Austin, and 2.8 mi upstream from mouth.
DRAINAGE AREA.--51.3 mi 2.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--May 1966 to current year.
GAGE.--Water-stage recorder. Datum of gage is 425.96 ft National Geodetic Vertical Datum of 1929.
REMARKS.--Water-discharge records fair. No known regulation or diversion. Station is part of hydrologic research project to study rainfall-runoff relation for urban areas. Five recording rain gages are located in the watershed above this station.
AVERAGE DISCHARGE.--17 years, 24.5 ft 3 /s (6.49 in/yr), 17,750 acre-ft/yr.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 14,300 ft 3 /s May 25, 1981 (gage height, 27.24 ft); no flow at times in 1967, 1971, and 1982-83.
Maximum stage since at least 1891, that of May 25, 1981.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of June 15, 1935, reached a stage of 24 ft, backwater from Colorado River. A flood in 1919 reached a stage of 22 ft, from information by local residents.
EXTREMES FOR CURRENT YEAR.--Peak discharges above base of 1,500 ft 3 /s and maximum (*):
Date Time Discharge Gage height Date Time
May 11 May 20 May 21
020016451000
Discharge (ft 3 /s)
*3,100 2,040 2,040
Gage height (ft)
15.3112.8912.89
June 5 Aug. 8
01151730
Discharge (ft 3 /s)
2,7402,570
Gage height (ft)
14.5314.20
Minimum daily discharge, no flow for many days.
DAY
DISCHARGE, "IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
OCT NOV DEC JAN FEE MAR APR MAY JUN JUL AUG SEP
1234
- 5
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINCFSMIN.AC-FT
CAL YRWTR YR
3.9.32.04.01.00
1 .36.66.02.7
19
7.0177.03.52.5
.9
.7
.5
.3
.1
.1
.7
.31.0.81
.81 1
.811 177
.85
.00
180.75 25.83
77.00.11.13359
1982 TOTAL1983 TOTAL
.0026543.2.44
.04
.01
.00
.00
.00
.00
.51
.00
.00
.00
.00
.02
.021 .4.13
.00
.004.51.7.20
1149159.77.2---
84.079.47
1 11.00.19.21563
6519.7624.
5.14.1
427.24.7
3.02.72.52.0
19
308.75.44.43.8
3.22.52.32.02.0
2.01.72.02.52.7
8.4368.74.43.86.4
235.27.59
421 .7.15.17467
52 MEAN99 MEAN
912015131 1
9.69.07.97.67.4
7.25.96.05.85.8
5.45.5
394322
3318151312
109.7
108.59.79.1
485.115.6
915.4.30.35962
17.920.9
8.98.68.29.8
69
171210
10526
1816151488
2821181514
1413131212
111111__.___---
618.522.11051.2.43.45
1230
MAX 3200MAX 378
1 111117030
2419184530
21162018
120
8025213925
1816
1808041
1994040374532
138244.6199
1 1.87
1 .002740
MIN .00MIN .00
3028272625
2524222221
2120181715
1515141313
1414121111
9.69.29. 18.78.4---
518.01 7.3
308.4.34.38
1030
CFSMCFSM
7.86.76.86.16.1
5.86.16. 17.36.5
37818151329
14125417
352
34833221816
151414141316
1490.348.13785.8.94
1 .082960
.35 IN
.41 IN
14121211
343
10840252119
1716155630
2920161514
1413151562
161213131 1
---
101733.934311.66.74
2020
4.735.53
119.07.97.27.9
8.47.46.66.15.6
5.04.74.7
4724
8317119.08.2
7.56.86.25.14.3
3.73.03.43.23.23.1
340.21 1 .0
833.0.21.25675
AC-FT 12930AC-FT 15120
2.92.52.4
1512
146.6
3482110
7.98.47.85.64.6
3.73.23.2
23916
9.47.46.25.25.1
4.73.83.43.12.72.5
787.325.43402.4.50.57
1560
4.53.32.21.7.97
2.21.43.9
2611
6.23.92.9
104.4
2.82.5
1312615
7.05.75.14.74.1
3.53.23.23.23,0---
286.579.55126.97.19.21568
-78-
COLORADO RIVER BASIN
08158600 WALNUT CREEK AT WEBBERVILLE ROAD, AUSTIN, TX--Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD. Chemical and biochemical analyses: October 1975 to current year. Sediment records: to September 1982. Radiochemical analyses: October 1979 to September 1980.
October 1977
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB28...
MAR04...
SPE-
PH (STAND- TEMPER-ARD ATURE
UNITS) (DEC C)
8.3
7.9
12.0
18.0 10
OXYGEN, OXYGEN COLI- STREP-
COLOR(PLATINUM-COBALTUNITS)
TURBIDITY
(NTU)
OXYGEN,DIS
SOLVED(MG/L)
DISSOLVED(PERCENT
SATURATION)
DEMAND,BIOCHEMICAL,5 DAY(MG/L)
FORM,FECAL ,0.7UM-MF(COLS./100 ML)
TOCOCCIFECAL,
KF AGAR(COLS.PER
100 ML)
1.0
210
13.2
7.8
125
85
.7
8.7
160
12000
120
42000
DATE
FEB28...
MAR04...
HARDNESS(MG/L AS CAC03)
HARDNESS,
NONCAR-BONATE (MG/L CAC03)
CALCIUMDISSOLVED (MG/L AS CA)
MAGNESIUM,DISSOLVED (MG/L AS MG)
SODIUM,DIS
SOLVED (MG/L AS NA)
SODIUMAD
SORPTION
RATIO
POTASSIUM,DIS
SOLVED (MG/L AS K)
ALKALINITYFIELD(MG/L AS CAC03)
SULFATEDISSOLVED (MG/L
AS S04)
CHLORIDE,DISSOLVED (MG/L AS CL)
FLUO-RIDE,DIS
SOLVED (MG/L AS F)
SILICA,DISSOLVED(MG/L AS SI02)
6.0
3.4
26
14
1.9
2.4
170
110
65
39
44
21
.40
.30
1 .4
3.5
SOLIDS, SOLIDS,SUM OF RESIDUE SOLIDSCONSTI- AT 105 VOLA-TUENTS, DEC. C,
D1S- SUS-SOLVED PENDED
TILE, SUS PENDED
DATE
FEB28...
MAR04...
329
205
4
261
NITRO GEN,
(MG/L) (MG/L) (MG/L) AS N)
NITRO GEN,
NITRO GEN,
NITRO GEN,
NITRO-NITRO- GEN.AM- GEN, MONIA +
40 .65
AS N)
<.020
.050
AS N)
.50
.70
AS N)
.080
.150
AS N)
.52
.75
AS N)
.60
.90
PHOS-NITRATE NITRITE N02+N03 AMMONIA ORGANIC ORGANIC PHORUS,TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL(MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L
AS P)
.010
.310
CARBON,ORGANICTOTAL(MG/LAS C)
2.1
14
DATE
FEB28...
MAR04...
TIME
1120
1340
ARSENICDISSOLVED(UG/L AS AS)
BARIUM,DIS
SOLVED(UG/L AS BA)
CADMIUMDIS
SOLVED(UG/L AS CD)
CHROMIUM,DISSOLVED(UG/L AS CR)
COPPER,DISSOLVED(UG/L AS CD)
IRON,DIS
SOLVED(UG/L AS FE)
66
47 10
<3
25
DATE
LEAD,DIS
SOLVED(UG/L AS PB)
MANGANESE,DIS
SOLVED(UG/L AS MN)
MERCURYDIS
SOLVED(UG/L AS HG)
SELENIUM,DIS
SOLVED(UG/L AS SE)
SILVER,DIS
SOLVED(UG/L AS AG)
ZINC,DIS
SOLVED(UG/L AS ZN)
FEB28...
MAR04. ..
<1 <3
8
DATE
MAR 04...
TIME
1340
AME-TRYNETOTAL
ATRA- TONE TOTAL (UG/L)
ATRA- CYAN-ZINE, TOTAL (UG/L)
AZINE TOTAL (UG/L)
CYPRA- ZINE TOTAL (UG/L)
PROME- PROME- PRO-TONE
TOTAL (UG/L)
.3
TRYNE TOTAL
PAZINE TOTAL
(UG/L) (UG/L)
SIMA- SIME-ZINE TONE
TOTAL TOTAL(UG/L) (UG/L)
SIME- TRYNE TOTAL (UG/L)
-79-
1 1
1 1
1 <1 III1 >-
1 rt 1 in
1 «31 '? 1
1 tfl 1 0-
II »
II II
11 1 11 1 1
1 1
II 1
II II
1 II II
1 0
1 O 1 Oi in i IY. i1 It. 1 U
II .0II 7'.n n i ~f
\ <~i i ^ i -i
M M _j n _i n ei M 11. M ^II >-H
II -^
II II "
II r*r
I l I '.1i I i I I
I I I
I Ii I II
I I I ii
I I I I I
i i I I III I i I -)I C'
I ffi u-»
II r
II >n n i i O ! .-r
i <xi i i i*»i
s: j-~3 C
u :<X f
Ul ID
'1T. ;LJ >
fl
I 1
s: » 13 3
O 1- n i
-v%o
l>
^>«0
^ 1
u, o
ya. o
i/i
i/)
X. ut
V
2n
in
O ct
V
r"T
0
rK
'.!!
_)
>
rj-UJ1-1 toi 1 1 /t
t
V.
JJ rr j
» -
_l 1:*
3p >
f
I
1 J C
(.1 t4 C
rt
i
:
i
(.
1
2
<yO 1 U 1
1
L
J 21 t « 1 f L 1
1
1 1
1 1 1
1
JC
11
I)
-
~> -^_t
2 -"I n
u
3
4
s ;?_j£
-r
5 m
^_i _i r.i
jj
«
>
-j
o o o o o o o o o o oO ,'J O O O O O O O O O
o o o o o o o o o o o
"O irv i^ in in in in in in in in
f) fo fo to to m to m m *< » m l
i i
1 O ( > O O O C> O O O 0 «- 1 1 1 1
1 1
1 1 1
1 1
!1 1 1 1
1 1 1
1 O O O O O O <"» O O »- to
i o o o n o o o o o o o i i i i
i i
i o o o f i o o o o T- ^ rv-
1 O O O O O O O O o O Oi i i i
i i i
i i ii
i i i
1 O <_> CJ r- -t O r- O «- N-> -t
1 0 O O O O O 'D I.T r- T- r- 1 1 1 1
1 1
11 tOI O .n i j in 'J m "D i.^ _~> :n o i i~> < j "^ -n -.t - 1 in m o o T 1 '5 ") J J \» ' J -\J .M vj rl t-l / (
-l I I
1
O O O O O O O O O <7) O O O O «- fM fM f^ i'» >4 * --t in ^0 rv- 'O O i~) O O O O O O ' J O ~> O O - > O O DO O O O "> O O >.7> O O O i'J T-
o o o o o o o o ' ;> o o o o o o o o o o o o o o o o o -> o
mo o T- <r f> T- T- CD o o o o cj o o o o C) o c? o o o o o c; o
ro ~» vt i/. in ir> O >O <o , * o -O -^ O O O O O O O O O O O O O O r- -t -t in -it t\t r- O in in O fM f> in ivi 'N-l O "O O O
r- K) 'O ro »- f-r i .4 in o O in in in in in -o co O
_ ,^,n.^ oo. .i>o^^.,n oo^,^n. .n^.o.,.,0
UN fv_ <r> O. O O r") T T r * « ^ rvi OJ rv| r^ r\j f\t 'M f^4 f\( to "^ fO fO r^ ro
O^ r- rvj r^ <t -t -^ ir\ ij*\ i/ 1* tn i/^ »r\ ir\ *f» o -4) ^ %o "<"' "O f^- f**- ^ r^- f*- P*- r^-
0 rs. rv, N. o - .> ^ ., ,n r o -., ,o .r- ro .t .t h- o -> - r , .> ^ ^ ,n
^ J ^ O m ;"» TV -^ >r^ ;r» * -> t "j o i-'\ ^ r» O n -M O i-*i O "* ' 3 D > '^ O
"> O 'O ' "> "O "O «'> J" -.f -t 4" -t t J" -f J^ -O '/\ -.A ^ i*"* '/^ uT i) O O O O
-80-
-18-
i\j r.j f\j rv-
C. C' ( ; -O -O OC- OJ O)co c«. t, o c<
CX. CX CX) CXU wi Wl v/.
o i'J rj wi \yi i)\ u. L-J to >o o i> o 1^1 -o *^o c« ~o oo -O o o ua i.u o O U O O <_> O Cj O Cj O O
O fJ O O O CJ O O O O O O O CJ O O O O CJ O O CJ O O t ") O O O O O O CJ CJ O O O
O C; O O <-J C' O CJ C.) tj C. O O O O CJ C' OC.) O O C' O C CJ CJ O O O CJ O CJ O
I r->I Tl
c. o2 Oc- c
COLORADO RIVER BASIN
08158640 WALNUT CREEK AT SOUTHERN PACIFIC RAILROAD BRIDGE, AUSTIN, TX (Reconnaissance partial-record station)
LOCATION.--Lat 30°15'58", long 97°39'24", Travis County, Kydrologic Unit 12090205, at Southern Pacific Railroad bridge, 1.2 mi south of Webberville Road, and 5.0 mi east of the State Capitol in Austin.
DRAINAGE AREA.--53.5 mi ? .
PERIOD OF RECORD. Chemical, biochemical, and pesticide analyses: January 1975 to current year. Radiochenucal analy ses: October 1979 to September 1980.
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
OXYGEN , OXYGENSPE- DIS- DEMAND,
STREAM- CIFIC COLOR SOLVED BIO-FLOW, CON- PH (PLAT- TUR- OXYGEN, (PER- CHEM-IHSTAN- DUCT- (STAND- TEMPER- INUM- BID- DIS- CENT ICAL,
COLI- STREP-FORK, TOCOCCIFECAL, FECAL,0.7 KF AGAKUM-KF (COLS.
TIME TANEOUS ANCE ARD ATURE COBALT ITY SOLVED . SATUR- 5 DAY (COLS./ PERDATE
FEE28...
MAY11 ...
AUG19.. .
DATE
FEB28...
MAY1 1 ...
AUG19. . .
DATE
FEB28..
MAY11. .
AUG19..
(CFS) (UKHOS) UNITS) (DEC C) UNITS) (NTU) (KG/L) ATION) (MG/L) 100 KL) 100 NL)
1245 45 690 7.1 18.5 5 2.6 9.9 108 1.6
1055 410 485 7.7 23.0 25 450 6.6 79 11
1405 1350 225 7.9 24.0 50 2100 6.4 77 9.3
HARD- MAGNE- SODIUM POTAS- ALKA- CHLO-HARD- NESS, CALCIUM SIUM, SODIUM, AD- SIUM, LINITY SULFATE RIDE,NESS NONCAR- DIS- DIS- DIS- SORP- DIS- FIELD DIS- DIS-(MG/L BONATE SOLVED SOLVED SOLVED TION SOLVED (KG/L SOLVED SOLVEDAS (MG/L (MG/L (MG/L (MG/L RATIO (KG/L AS (MG/L (MG/LCAC03) CAC03) AS CA) AS MG) AS NA) AS K) CAC03) AS S04) AS CL)
190 66 53 13 62 2.1 6.7 120 72 78
150 42 49 7.1 39 1.4 5.8 110 59 45
87 21 31 2.3 9.8 .5 3.5 66 22 10
SOLIDS, SOLIDS, NITRO-SUM OF RESIDUE SOLIDS, MITRO- NITRO- NITRO- NITRO- NITRO- GEN.AM-CONSTI- AT 105 VOLA- GEN, GEN, GEN, GEN, GEN, MON IA + PHOS-TUENTS, DEC. C, TILE, NITRATE NITRITE N02+N03 AMMONIA ORGANIC ORGANIC PHORUS
DIS- SUS- SUS- TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTALSOLVED PENDED PENDED (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L(MG/L) (MG/L) (MG/L) AS N) AS N) AS N) AS N) AS N) AS N) AS P)
365 7 <1 7.8 .020 7.8 .120 1.5 1.60 4.70
280 768 400 2.2 .270 2.5 1.30 2.2 3.50 2.20
53 K65
K370 K1700
45000 52000
FLUO- SILICA,RIDE, DIS-DIS- SOLVED
SOLVED (KG/L(MG/L ASAS F) SI02)
.80 7.7
1.1 8.0
.40 5.3
CARBON ,, ORGANIC
TOTAL(MG/LAS C)
6.7
20
124 4610 552 .94 .060 1.0 .370 17 17.0 .670 84
CHRO-ARSENIC BARIUM, CADMIUM MIUM, COPPER, IRON,
DIS- DIS- DIS- DIS- DIS- DISSOLVED SOLVED SOLVED SOLVED SOLVED SOLVED
TIME (UG/L (UG/L (UG/L (UG/L (UG/L (UG/LDATE AS AS) AS BA) AS CD) AS CR) AS CU) AS FE)
FEB28... 1245 1 30 <1 <10 8 11
MAY11... 1055 2 39 <1 <10 1 110
AUG19... 1405 2 26 <1 <10 6 10
MANGA- SELE-LEAD, NESE, MERCURY NIUM, SILVER, ZINC,DIS- DIS- DIS- DIS- DIS- DIS
SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED(UG/L (UG/L (UG/L (UG/L (UG/L (UG/L
DATE AS PB) AS MN) AS HG) AS SE) AS AG) AS ZN)
FEB28... 3 15 .1 <1 <1 13
MAY11... <1 9 <.1 1 <1 18
AUG19... <1 1 <.1 <1 <1 9
-82-
COLORADO RIVER BASIN
08158640 WALNUT CREEK SOUTHERN PACIFIC RAILROAD BRIDGE. AUSTIN, TX--Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
AUG 19...
TIME
1405
AME-TRYNETOTAL
ATRA- TONE TOTAL (UG/L)
ATRA- ZINE, TOTAL
CYAN- AZINE TOTAL
CYPRA-ZINETOTAL
(UG/L) (UG/L) (UG/L)
METRO- PROME-MYL TONE
TOTAL TOTAL(UG/L) (UG/L)
<2.0 .3
PROME- PRO-TRYNE PAZINE PROPHAM SEVIN,TOTAL TOTAL TOTAL TOTAL
DATE (UG/L) (UG/L) (UG/L) (UG/L)
AUG 19... <.1 <.10 <2.0 <2.0
SIMA- SIME- SIME-ZINE TONE TRYNE
TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
-83-
COLORADO RIVER BASIN
08158700 ONION CREEK NEAR DRIFTWOOD, TX
LOCATION.--Lat 30°04'59", long 98°00'29", Hays County, Hydrologic Unit 12090205, on left bank at upstream side of low- water crossing on Farm Road 150, 3.2 mi southeast of Driftwood, and 10 mi west of Buda.
DRAINAGE AREA. 124 mi 2 .
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. April 1958, November 1961 to June 1979 (periodic discharge measurements only), July 1979 to current year.
GAGE.--Water-stage recorder. Datum of gage is 878.13 ft National Geodetic Vertical Datum of 1929.
REMARKS. Water-discharge records fair. Station is part of hydrologic research project to study rainfall-runoff rela tionship in the Austin urban-rural areas. There is a recording rain gage located in the watershed.
EXTREMES FOR PERIOD OF RECORD. Maximum discharge, 8,010 ft'/s June 11, 1981 (gage height, 15.24 ft); minimum daily, 0.27 ft-'/s Sept. 5, 1980.
Flood of Mar. 20, 1979, reached a stage of 11.48 ft (discharge, 4,980 ft ! /s), on basis of peak flow over dam, 1.5 mi downstream. Flood of June 11, 1981, peaked at a depth of 5 ft over this dam.
EXTREMES FOR CURRENT YEAR.--Maximum discharge, 588 ft'/s Mar. 4 at 1530 hours (gage height, 5.83 ft), no other peak above base of 500 ft ; /s; minimum daily, 0.55 ft'/s Oct. 4, 31.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINCFSMIN.AC-FT
CAL YRWTR YR
.60
.60
.58
.55
.59
.831 .73.92.01.6
1 .31.71.71.2.87
.75.75.75.75.71
.60
.73.89.76.68
.60
.60
.60.70.58.55
30.72.993.9.55
.008.01
61
1 982 TOTAL1 983 TOTAL
.58
.933.2
.83
.58
.57
.75
.87
.761.3
2.81.2.59.58.74
.75
.84
.921.51.3
1.0.92.98
2.01.4
4.76.85.54.33.8
52.991.776.8.57.01.02105
563610997
3.33.13.02.32.1
1.61.61.61 .62.9
2.52.01.82.42.7
2.72.73.02.92.2
2.22.22.42.72.7
2.24.73.32.72.72.9
78.72.544.71.6.02.02156
. 80 MEAN
.91 MEAN
5.25.25.66.17.3
8.08.48.68.68.6
8.38.27.97.97.6
7.57.58.48.48.3
8.99.09.09.29.4
9.71010101011
257.88.32
115.2.07.08511
15.430.1
11109.99.8
10
1111111322
2120191948
5349474544
4342414039
383736
799.728.6
539.8.23.24
1590
MAX 1960MAX 265
363534
163136
10490838176
7575757476
8993858281
7976
114116110
223156129137206135
3124101223
34.82.94
6200
MINMIN
114101
999690
8581787472
6867656059
5654535150
4949454342
4040383838
189563.2
11438
.51
.573760
.48 CFSM
.55 CFSM
3734323028
2826242323
4534282427
2424242294
265118
796659
544947444139
149248.1
26522
.39
.452960
.12 IN
.24 IN
3938373645
5049423836
34333171
124
8586625652
4946454264
6049423835
151450.5
12431
.41
.453000
1.693.30
3431272629
5141272523
2323233034
4290645245
4036332825
242220201817
102333.0
9017
.27
.312030
AC-FT 11180AC-FT 21810
1616151515
1416171619
1614141314
1211111110
11119.69.59.8
9.48.67.98.57.36.4
384.012.4
196.4.10.12762
5.95.54.34.13.8
3.22.64.16.25.2
4.23.11.81.61.6
1.61-.66.8
8641
2220181715
141312119.8
346.011.5
861.6.09.10686
-84-
PERIOD OF RECORD.--Chemical, biochemical, and pesticide analyses ses: October 1979 to September 1980.
COLORADO RIVER BASIN
08158700 ONION CREEK NEAR DRIFTWOOD, TX--Continued
WATER-QUALITY RECORDS
January 1974 to current year. Radiochemical analy-
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATETIME
STREAM-FLOW,INSTANTANEOUS(CFS)
SPECIFICCONDUCTANCE(UMHOS)
PH(STANDARD
UNITS)
TEMPERATURE(DEC C)
09001220
32126
462460
7.9 7.7
15.013.0
OXYGEN, OXYGEN COLI-
.60 1 .3
9.1 10.2
9399
76220
STREP-
COLOR(PLATINUM-COBALTUNITS)
TURBIDITY
(NTU)
OXYGEN,DIS
SOLVED(MG/L)
DISSOLVED(PERCENT
SATURATION)
DEMAND,BIOCHEMICAL,5 DAY(MG/L)
FORM,FECAL,0.7UM-MF(COLS./100 ML)
TOCOCCIFECAL,
KF AGAR(COLS.PER
100 ML)
43440
DATE
HARDNESS(MG/L AS
CAC03)
HARDNESS,
NONCAR-BONATE (MG/L CAC03)
CALCIUMDISSOLVED (MG/L AS CA)
MAGNESIUM,DIS
SOLVED (MG/L AS MG)
SODIUM,DIS
SOLVED (MG/L AS NA)
230230
2428
6968
1514
7.3 6.6
SODIUMAD
SORPTION RATIO
POTASSIUM,DIS
SOLVED (MG/L AS K)
ALKALINITYFIELD(MG/L AS
CAC03)
SULFATEDISSOLVED (MG/L
AS S04)
CHLORIDE,DISSOLVED (MG/L AS CL)
FLUO-RIDE,DIS
SOLVED (MG/L AS F)
.2
.21.0 .9
210200
2721
1312
.20
.20
SOLIDS, SOLIDS,SILICA, SUM OF RESIDUEDIS- CONSTI- AT 105SOLVED TUENTS, DEC. C,(MG/L DIS- SUS-
DATEAS SI02)
MAR01... 7.2 23... 7.2
SOLVED PENDED (MG/L) (MG/L)
266250
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
NITROGEN,
NITRITETOTAL '(MG/LAS N)
NITROGEN,
N02+N03TOTAL(MG/LAS N)
NITROGEN,
AMMONIATOTAL(MG/LAS N)
NITROGEN,
ORGANICTOTAL(MG/LAS N)
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
PHOSPHORUS,TOTAL(MG/LAS P)
CARBON,ORGANICTOTAL(MG/LAS C)
<.020 <.020
.20
.20.090.090
.61
.51.70 .60
.010
.0301.3 1.8
DATETIME
09001220
ARSENIC DIS SOLVED (UG/L AS AS)
BARIUM, DIS SOLVED (UG/L AS BA)
CADMIUM DIS
SOLVED (UG/L AS CD)
CHRO MIUM, DIS SOLVED (UC/L AS CR)
COPPER, DIS SOLVED (UG/L AS CU)
IRON, DIS SOLVED (UG/L AS FE)
2624
<3 3
DATE
LEAD,DISSOLVED(UG/L AS PB)
MANGANESE,DIS
SOLVED(UG/L AS MN)
MERCURYDIS
SOLVED(UG/L AS HG)
SELENIUM,DIS
SOLVED(UG/L AS SE)
SILVER,DISSOLVED(UG/L AS AG)
ZINC,DIS
SOLVED(UG/L AS ZN)
<3
DATE
MAR 23...
TIME
1220
ATRA-AME- TONE TRYNE TOTAL TOTAL (UG/L)
ATRA- CYAN- CYPRA-ZINE, AZINE ZINETOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
METHO-MYL TOTAL (UG/L)
<2.0
PROME-TONE
TOTAL (UG/L)
PROME- PRO-TRYNE PAZINE PROPHAM SEVIN,TOTAL TOTAL TOTAL TOTAL
DATE (UG/L) (UG/L) (UG/L) (UG/L)
MAR 23... <.1 <.10 <2.0 <2.0
SIMA- SIME-ZINE TONE
TOTAL TOTAL(UG/L) (UG/L)
SIME- TRYNE TOTAL (UG/L)
-85-
ST
A.
nG
.Co
l 5S
7G
u
ST
OR
M
RA
I^A
LL
AN
D
RO
MO
F-
RE
CO
RD
1
93
3
WA
TE
R
YE
AR
ON
ION
C
R£5K
N
EA
R
DR
I F
TW
OX
/
TE
XA
S
ST
OR
M
Or
MA
Y
13-il ,
1
93
3
MA
Y
'e. 3
C 033
0015
00
45
C^1
5O
il 5
1 1
30
' j
U
1 31
?1
3 3
1
3-»5
1 ^ 3
U
1 -»
1 3
1 H
3u1
4-+ j
153-j
15
13
15
30
1 6
33
170C
1 74
13
1 c1
51 yjj
2 0'
3 -
2^30
_ £
- U
2 >*
0 u'
' i A
Y
^}
0 _
0 0
C u
303
2 3
0C
-+3
3C
oo:
C 3
J ^
-' C
0 u
Oo1
i3c 3
j0
c *
3U
/ "* J
0 o
1 5
oy-*
j
1-O
N
| |
J Y
'
" Y
"
| |
0.0
3 .
0 i
0.1
3C
. 1
00.2
10
. Z
03
. 2
£C
.3C
C .
* 3
0 .
'. 1
J.7
71
.20
1 .
r o
1 ,5
c1.5
s1 .i :
1 .
5 c
1 ,5
c1
. 3
0
1 .5
61
. ?
c1
. 5
o1
.5 a
1.5
6
1.3
3
1.5
7
1 .5
71
.57
1.5
71
.57
1 .
~ 7
1.5
:1.5
;1
. i
y1.6
01
. 7
42
. 5 t
2.5
o2.5
41
1 1 1 i 1 j 1 1 1 i 1 1 1 i 1 1 1 i 1 1 i i | i | | i i | 1 1 , 1 1 1 j 1 I , 1 1 1
AC
CO
M.
IN.
0.0
O.Q
33.1
00.1
00.2
13.2
20.2
oC
.30
0...3
0.6
10
.77
1.2
01
,5o
1 ,5
o1
.30
1.5
61
.56
1 ,5
o1
.5 =
1 .5
6
1 .5
61
.56
1 .5
61
.56
1 .
36
1 .5
7
1 .5
71
.57
1 .5
71
.57
1 .5
71
.53
1.5:
1.5
*1
.oO
1 .7
6
2.5
22
.5o
2 .
&<.
DIS
CH
AR
GE
IN
CF
S 27
.02
7.0
27
.02
6.0
25
.02
5.0
67
.013
1 .3
1 9
9.0
27
3.0
324.0
33
0.0
32
2.0
302.
C2
57
.02
L 3
. 0
1 6<
+ .
01
42
.0125.0
111.0
13
3.0
1 4
4.0
12
9.3
12
2.0
1 7
7.0
233.0
200.
:194.0
159.3
14
2.0
133.0
13
6.0
1 5
9.0
1 8
5.0
244.0
291
.03
33
.33
43
.02
96
.0
AC
CO
M.
RU
NC
-F
IN.
C.O
OO
O0.0
002
O.O
OO
S0.0
021
0.0
332
0.0
039
0.0
0*7
0.0
051
O.G
05
70
. 00
6o
0.0
07s
0 .
0 0
o 6
0.0
09
60
.01
05
0.0
113
O.u
UO
0.0
1 3
40
. u
1 4
?0.0
1 5
J0
. u
1 66
0.0
1 7
80.0
192
O.C
20
40.0
21V
0.3
253
3 .
C 2
d 6
O.C
2d
o0
. u 3
i.
0
0 .
C 3
5 <*
0.0
377
0 .
0 3
5 ^
0 .
0 3
V S
0.0
405
0 .
c 4
1 1
0.0
418
0.0
44
10.0
*72
J.
J5
15
0.0
570
-Z8-
C-1 » l-^ »o c. c- O o r\j c c_> o
I rvi f\j rj r\j rvi f\j ro f\j rv rj r\j t\> ro r-j f\j iv
y >.> u- o- o i> o o- o- o- o o cjO (.1- O O C t> W O 1C W. <Ji <^ *
II O
I C/' ^3
o o o oo o o a
CT O O Oo o o o o^J t>c: o
COLORADO RIVER BASIN
08158800 ONION CREEK AT BUDA, TX
LOCATION. Lat 30 e05'09". long 97 e50'52", Haya County, Hydrologic Untt 12090205. on left bank at downstream atde of bridge on Farm Road 967 and 0.4 mi northwest of Buda.
DRAINAGE AREA. 166 mi 2 .
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. November 1961 to September 1973, January 1978 to July 1979 (periodic discharge measurements only), July 1979 to September 1983 (discontinued).
GAGE. Water-stage recorder. Datum of gage is 657.39 ft National Geodetic Vertical Datum of 1929.
REMARKS. Water-discharge records fair. The station is part of a hydrologic-research project to study rainfall-runoff relation for the Austin urban-rural areas. There are two recording rain gages located in the watershed.
EXTREMES FOR PERIOD OF RECORD. Maximum discharge, 17,400 ft'/s June 13. 1981 (gage height, 17.59 ft); no flow at times each year.
EXTREMES OUTSIDE PERIOD OF RECORD. Flood of May 28, 1929, reached a stage of about 36.2 ft, present datum (discharge, 53,200 ft*/s), from slope-area indirect measurement of peak flow. This is probably the highest flood since that date.
EXTREMES FOR CURRENT YEAR. Peak discharges above base of 1,000 ft ! /s and maximum (*):
Date
Mar. 30 May 20 May 21
Time
1130 1900 1115
Discharge(ft'/B)
1,240 1,210
*1,650
Gage height (ft)
6.11 6.07 6.59
Minimum discharge, no flow for many days.
DISCHARGE. IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT NOV DEC JAN FEE MAR APR MAY JUN JUL AUG SEP
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINCFSMIN.AC-FT
CAL YRWTR YR
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00.000.00.00
.000.00.00
1 982 TOTAL1983 TOTAL
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00.000.00.00
.000.00.00
5135.823135.45
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00.000.00.00
.000.00.00
MEANMEAN
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00.000.00.00
.000.00.00
14.18.59
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00...
.00.000.00.00
.000.00.00
MAX 3640MAX 876
.00
.00
.00
.0083
9.83.51.6.89.22
.00
.00
.00
.00
.00
.21
.61
.26
.11
.23
.19
.082.41.97.1
1661315436
338207
1044.1033.7338.00.20.23
2070
MINMIN
9955413420
1412119.38.0
5.94.22.82.11 .9
1.81 .71.61 .51 .4
1.41 .41 .41.31.2
1.21.11.11 .11.1
340.511 .4
991 .1.07.08675
.00 CFSM
.00 CFSM
.97
.86
.74
.65
.50
.32
.19
.11
.08
.13
1.7.89.60.52.98
1.1.82
1 .11.3
218
87633575133.9
1.61.31.31.21 .11 .0
1541 .9649.7876.08.30.35
3060
.09 IN
.05 IN
.92
.88
.69
.561 .7
1 .11 .1.82.61.47
.33
.15
.02
.0264
347217
1 .9.71
.14
.06
.00
.00
.00
.00-
.00
.00
.00
.00
199.186.64
72.00.04.04395
1 .15.70
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.003.62.1.08
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
5.78.193.6.00
.001.0011
AC-FT 10190AC-FT b220
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00.000.00.00
.000.00.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.492.8.64
.ou
.00
.00
.00
.00
.00
.00
.00
.00
.00
j.93.1 J2.b.00
.001.007.8
-88-
PERIOD OF RECORD. Chemical, biochemical, and pesticide analyses: Radiochenical analyses: October 1979 to September 1980.
COLORADO RIVER BASIN
08158800 ONION CREEK AT BUDA, TX Continued
WATER-QUALITY RECORDS
January 1978 to September 1983 (discontinued)
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
MAR 23...
TIME
1130
STREAM-FLOW,INSTANTANEOUS(CFS)
SPECIFICCONDUCTANCE(UMHOS)
PH(STANDARD
UNITS)
TEMPERATURE(DEC C)
COLOR(PLATINUM-COBALTUNITS)
TURBIDITY
(NTU)
OXYGEN ,DIS
SOLVED(MG/L)
OXYGEN . DISSOLVED(PERCENT
SATURATION)
OXYGEN DEMAND,BIOCHEMICAL,5 DAY(MG/L)
COLI- FORM,FECAL,0.7UM-MF(COLS./100 ML)
STREP TOCOCCIFECAL,
KF AGAR(COLS.
PER100 ML)
3.4 312 7.7 11.0 50 35 11.2 104 2.2 10000 40000
DATE
MAR 23...
HARDNESS(MG/LASCAC03)
HARDNESS,
NONCAR-BONATE(MG/LCAC03)
CALCIUMDISSOLVED(MG/LAS CA)
MAGNESIUM,DIS
SOLVED(MG/LAS MG)
SODIUM,DISSOLVED(MG/LAS NA)
SODIUMAD
SORPTION
RATIO
POTASSIUM,DIS
SOLVED(MG/LAS K)
ALKALINITYFIELD(MG/LASCAC03)
SULFATEDISSOLVED(MG/L
AS S04)
CHLORIDE,DISSOLVED(MG/LAS CL)
FLUO-RIDE,DIS
SOLVED(MG/LAS F)
SILICA,DISSOLVED(MG/LAS
SI02)
140 44 47 5.9 6.2 .2 2.5 98 .10 8.0
SOLIDS, SOLIDS, SUM OF RESIDUE SOLIDS CONSTI- AT 105 VOLA- TUENTS, DEC. C,
SUS-DIS- SOLVED PENDED
TILE, SUS
PENDEDDATE
MAR 23...
(MG/L) (KG/L) (MG/L) AS N)
174 16 14
NITRO- NITRO- NITRO- NITRO- NITRO- NITRO- GEN.AM-GEN, GEN, GEN, GEN, GEN, MONIA + PHOS- CARBON,
NITRATE NITRITE N02+N03 AMMONIA ORGANIC ORGANIC PHORUS, ORGANIC TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L
.16
AS N)
.040
'AS N) AS N) AS N) AS N)
.20 .130 .97 1.10
AS P)
.070
AS C)
13
DATETIME
1130
ARSENIC BARIUM, CADMIUMDIS
SOLVED (UG/L
AS AS) AS BA) AS CD)
DIS- DIS SOLVED SOLVED (UG/L (UG/L
CHRO MIUM, DIS SOLVED (UG/L AS CR)
COPPER, DIS SOLVED (UG/L AS CU)
IRON, DIS
SOLVED (UG/L AS FE)
27 <1
DATE
MAR23...
LEAD,DIS
SOLVED(UG/LAS PB)
4
MANGANESE,DIS
SOLVED(UG/LAS MN)
3
MERCURYDIS
SOLVED (UG/LAS HG)
<-1
SELENIUM,DIS
SOLVED(UG/LAS SE)
<1
SILVER,DIS
SOLVED(UG/LAS AG)
<1
ZINC,DIS
SOLVED(UG/LAS ZN)
6
DATETIME
1130
AME-TRYNETOTAL
ATRA- TONE TOTAL (UG/L)
ATRA- ZINE, TOTAL (UG/L)
CYAN- CYPRA-AZINE ZINETOTAL TOTAL(UG/L) (UG/L)
METHO-MYL
TOTAL (UG/L)
<2.0
PROME-TONE
TOTAL (UG/L)
PROME- PRO-TRYNE PAZINE PROPHAM SEVIN,TOTAL TOTAL TOTAL TOTAL
DATE (UG/L) (UG/L) (UG/L) (UG/L)
MAR 23... <.1 <.10 <2.0 <2.0
SIMA- SIME- SIME-ZINE TONE TRYNE
TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
-89-
<-> O O O O O ."3 O O O O O O CDr^- --t O ru T o T 'V o ^ *o t> r f>j * T o T~ * rvi o O o M T- *> O O t Of>'<1"<->o^-'\ll/'ir^-T- r-O'AJinf^'Or -.f II
O O O O O O O O D ~i "J O O T} O O O O CD O O O O O O
O O O O O O O O O O O 'D O O O O O O O O CD T O O ~>
O ") O <_J
O O O O
O O "3 O O O O '-.3
-> o o o o o o o
O O O O O C) O O O O O O O O O O
<\j f-- in r-i O ^t iri o o O O O O O r") -to fM T r- f> >o r<j (\i 'ji T N T- fM r- O OOOOO
o o o « <\i -'M K» -4 i/> f«
o o o o o o (.1 o c i o
I C3I (YI O
O C) O ri O ( ;> r.i o
C O O t)
c_) O CT O O CJ O O O
r--> -t o < -t -T * ' J *- n o N. 'O o
'.) LT1 CJ 1/1 r-) .,-> 3K> -^ I'D r TD < fOo- *> o r^ » « -» r- r\i rj cj r-J --J
O Nl t) 'J _J
-90-
o o o «.-C. O CJ cr.
» c.<Ji O
<.* o o \jt(_; CJ C. C1r> O O Cj 0
r~ C) -O > o oj
II 0 II O-
o o- o- >> o ocr a 17 o- o
I r>.) i\j rjrx> c\) tvi ro » OO i.D
I\J (\J
O O O O O O O O O c_i O O O
IX) i\J IO (X) l\> IvJ (XI
ro ix> rvi r\> rv
ui ui i,n 1/1 ui
C/J Wl ~*j ci 4?* 4^" O3 Cy O 4?"* ^JIx) r\j ^yi ~^J "J *-J H^ CJ vji To 4^
O O O O O O O CJ O O O
4" -^ CJ O CJ CJ CJ CJ CJ O O <_) O O CJ O O CJ <_> O O CJ ">J *J -J
IJ O CJ O O O CJ CJ O O O O CJ O O O O O O O O O C.J O O
II Tl
II CO
O O O Ci CJ O O O C CJ O
i/J OJ IX fx) rj ix> * CJ O J en
O O CX, O 4~- P~ *..-* >* O
O O O C' O O C) O O O O CJ CJ C) O C) O O O Ci C) C.'
'l\j«v_- »_-_*-»_»-»-» »-»_- »-» »-»-* oCft C>
C r\j NO O uo O O x.j ^O 4^ rx» ~^J (** ^ ~>J O O 4-*1 C3 ~>J O *-»
COLORADO RIVER BASIN
08159000 ONION CREEK AT U.S. HIGHWAY 183 NEAR AUSTIN, TX
LOCATION.--Lat 30°10'40", long 97°41'18", Travis County, Hydrologic Unit 12090205, on right bank at downstream side of downstream bridge on U.S. Highway 183, 2.4 mi downstream from Williamson Creek, 3.2 mi southwest of Del Valle, and 7.5 mi southeast of the State Capitol Building in Austin.
DRAINAGE AREA.--321 mi 2.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--May 1924 to March 1930, March 1976 to current year. In 1924-30 station was published as "near Del Valle."
GAGE.--Water-stage recorder. Datum of gage is 442.85 ft State Department of Highways and Public Transportation datum. May 15, 1924, to Mar. 15, 1930, nonrecording gage at highway bridge 1,700 ft upstream at 6.42-foot higher datum.
REMARKS.--Water-discharge records good. Flow is slightly regulated by several small ponds on main channel and tributar ies above station. There are eleven recording rain gages located in the watershed.
AVERAGE DISCHARGE.--12 years (water years 1925-29, 1977-83), 81.7 ft 3 /s (3.46 in/yr), 59,190 acre-ft/yr.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 76,000 ft 3 /s hay 28, 1929 (gage height, 30.5 ft), present datum; no flow at times.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage since 1869 occurred about July 3, 1869, stage about 38 ft from news paper accounts, and Sept. 9, 1921, stage 38.0 ft, from floodraark, present site and datum.
EXTREMES FOR CURRENT YEAR.--Peak discharges above base of 2,500 ft 3 /s and maximum (*):
Date Time Discharge Gage height Date Time
Mar. 23 May 20
09451830
Discharge (ft 3 /s)
2,550 *4,030
Gage height (ft)
10.1012.33
May 21 Aug. 8
13001700
Discharge (ft 3 /s)
3,9902,560
Gage height (ft)
12.2710.12
Minimum daily discharge, 0.31 ft 3 /s Oct. 16.
DISCHARGE, IN CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT NOV DEC JAN FEE MAR APR MAY JUN JUL AUG SEP
1 1.12 1.23 1.24 1.15 .57
6 .577 .688 1.09 1.0
10 1.4
11 1.612 1.213 .9914 .6615 .42
16 .3117 .5218 .7619 .7620 .87
21 1.122 1.223 1.224 1.225 .89
26 .7627 .6728 .9829 .8230 .7631 .76
TOTAL 28.25MEAN . 9 1MAX 1 . 6MIN .31CFSM .003IN. .00AC-FT 56
.76
.806.13.02.0
1.21 .1.99.80.76
.76
.76
.76
.76
.90
1 .21 .21.21.31.4
1.61.71 .61.51.9
86681 15.54.5
211.057.04
86.76.02.02419
CAL YR 1982 TOTAL 14013WTR YR 1983 TOTAL 16078
3.93.76.46.94.7
4. 14.14. 14.14.3
6.89.95.85.45.2
5.45.45.65.96.6
6.87.26.96.46.0
5.87.88.76.86.76.3
183.75.939.93.7.02.02364
. 3 7 MEAN
.80 MEAN
8121107.35.9
5.45.45.14.95.3
5.45. 14.95.15.0
4.94.9
155727
2119119.48.1
7.96.77.38.39.7
1 1
405.013.1
814.9.04.05803
33.444.1
109.2
101095
198.0
- 6.833966
147.46.05.4
57
28128.77.66.9
6.66.36.36.36.3
6.35.85.8______---
775.727.73395.4.09.09
1540
MAX 6510MAX 2220
5.85.65.8
7166
672815117.2
5.85.45.55.87.8
15076211320
159.2
89116257
558293144104331390
3546.91148915.4.36.41
7040
MIN,MIN
160104827563
5042363432
2824211715
1413131313
131312121 1
111 11 11 111
---
96532.216011.10.11
1910
.01 CFSM
.31 CFSM
1111109.68.9
7.77.36.66.86.6
41533151221
19122747
1090
222083224411060
433328242322
5415.5175
22206.6.55.63
10740
.12 IN
.14 IN
21212120
448
12072312421
1918171617
1 1494764423
1916141414
261614121 1
---
139346.444811
.15
.162760
1.621.86
109.78.68.27.7
7.77.77.66.86.3
5.85.85.5
4634
4921151212
119.38.77.16.3
5.85.45.45.45.44.4
4.14. 14.03.23.0
3.03.0
42312480
1614952717
141210
300150
802515108.0
7.06.05.55.04.54.0
360.6 1476.41 1.6
494.4.04.04715
AC-FT 27800AC-FT 31890
47.64233.0.15.17
2930
4.54.03.73.43.0
3.53.33.03.65.7
167.85.95.45.4
4.94.8
204713150
4522161312
12121 19.99.9---
1317.743.97133.0.14.15
2610
-92-
COLORADO RIVER BASIN
08159000 ONION CREEK AT U.S. HIGHWAY 183 NEAR AUSTIN. TX--Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Chemical, biochemical, and pesticide analyses: October 1976 to current year. October 1976 to September 1982. Radiochemical analyses: October 1979 to September 1980.
Sediment analyses
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB09...
MAR02...
TIME
1435
0900
STREAM- FLOW,
INSTAN TANEOUS (CFS)
757
7.7
SPE CIFIC CON DUCT ANCE
465
589
PH(STAND- TEMPER- ARD ATURE
(UMHOS) UNITS) (DEC C)
7.0
8.2
14.0
17.0
COLOR(PLATINUM-COBALTUNITS)
TURBIDITY
(NTU)
OXYGEN,DIS
SOLVED(MG/L)
OXYGEN,DISSOLVED(PERCENT
SATURATION)
OXYGENDEMAND,BIOCHEMICAL,5 DAY(MG/L)
COLI-FORM,FECAL.0.7UM-MF(COLS./100 ML)
STREPTOCOCCIFECAL,
KF AGAR(COLS.PER
100 ML)
35 620
<1 1.3 9.5 100
5.8
.6
K1300
29
K14000
K67
DATE
FEB09...
MAR02...
HARDNESS(MG/L AS CAC03)
HARDNESS,
NONCAR-BONATE (MG/L CAC03)
CALCIUMDISSOLVED (MG/L AS CA)
MAGNESIUM,DIS
SOLVED (MG/L AS MG)
SODIUM,DIS
SOLVED (MG/L AS NA)
190
230
37
35
61
74
8.3
12
22
33
SODIUMAD
SORPTION
RATIO
POTASSIUM,DIS
SOLVED (MG/L AS K)
ALKALINITYFIELD(MG/L AS CAC03)
SULFATKDISSOLVED (MG/L
AS S04)
CHLORIDE,DISSOLVED (MG/L AS CL)
FLUO-RIDE,DIS
SOLVED (MG/L AS F)
SILICA,DISSOLVED(MG/L AS
SI02)
.7
1.0
2.5
2.4
150
200
44
59
28
40
.30
.40
5.2
3.1
SOLIDS, SOLIDS, SUM OF RESIDUE SOLIDS CONSTI- AT 105 VOLA- TUENTS, DEC. C,
SUS-DIS- SOLVED FENDED
TILE, SUS PENDED
DATE
FEB09...
MAR02...
261
344
592 62
NITRO GEN,
NITRO GEN,
NITRO GEN,
NITRO GEN,
NITRO-NITRO- GEN.AM- GEN, MONIA + PHOS- CARBON,
(MG/L) (MG/L) (MG/L) AS N)
NITRATE NITRITE N02+N03 AMMONIA ORGANIC ORGANIC PHORUS, ORGANICTOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL(MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L
.66
AS N)
.040
<.020
AS N)
.70
.10
AS N)
.100
.120
AS N)
2.9
.68
AS N)
3.00
.80
AS P)
.770
.050
AS C)
11
3.7
DATE
FEB09...
MAR02...
TIME
1435
0900
ARSENICDIS
SOLVED(UG/L AS AS)
BARIUM,DIS
SOLVED(UG/L AS BA)
CADMIUMDIS
SOLVED(UG/L AS CD)
CHROMIUM,DISSOLVED(UG/L AS CR)
COPPER,DISSOLVED(UG/L AS CU)
IRON,DIS
SOLVED(UG/L AS FE)
50
60
12
<3
DATE
LEAD,DIS
SOLVED(UG/LAS PB)
MANGANESE,DISSOLVED(UG/LAS MN)
MERCURYDISSOLVED(UG/LAS HG)
SELENIUM,DIS
SOLVED(UG/LAS SE)
SILVER.DIS
SOLVED(UG/LAS AG)
ZINC,DISSOLVED(UG/LAS ZN)
FEB09...
MAR02...
<1 18
3
<3
5
DATE
FEB 09...
TIME
1435
AME-TRYNETOTAL
ATRA- TONE TOTAL (UG/L)
ATRA- CYAN-ZINE, AZINETOTAL TOTAL(UG/L) (UG/L)
CYPRA- ZINE TOTAL (UG/L)
METHO- PROME-MYL TONE
TOTAL TOTAL(UG/L) (UG/L)
<2.0
PROME- PRO-TRYNE PAZINETOTAL TOTAL
DATE (UG/L) (UG/L)
FEB 09... <.1 <.1C
PROPHAM TOTAL (UG/L)
SEVIN,TOTAL(UG/L)
<2.0 <2.0
-93-
SIMA- SIME- SIME-ZINE TONE TRYNE
TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
COLORADO RIVER BASIN
08158810 BEAR CREEK BELOW FARM ROAD 1826 NEAR DRIFTWOOD, TX
LOCATION. Lat 30°09'19", long 97°56'23", Hays County, Hydrologic Unit 12090205, 0.8 mi southeast of Farm Road 1826 and 5.9 mi northeast of Driftwood.
DRAINAGE AREA. 12.2 mi 2 .
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. March 1978 to July 1979 (periodic discharge measurements only), October 1978 to June 1979 (peak discharges above base only), July 1979 to current year.
GAGE. Water-stage recorder. Altitude of gage is 860 ft, from topographic map.
REMARKS. Water-discharge records good. Station is part of a hydrologic research project to study rainfall-runoff relation for the Austin urban-rural areas. There is a recording rain gage located in the watershed.
EXTREMES FOR PERIOD OF RECORD. Maxumum discharge, 8,330 ft 3 /s June 11, 1981 (gage height, 13.05 ft, from floodmarks), from slope-area measurements of peak flow; no flow Aug. 28 to Sept. 5, 1980, and Sept 13, 18, 19, Oct. 4, 5, 1982.
EXTREMES OUTSIDE PERIOD OF RECORD. Flood of June 9, 1939, reached a stage of 16.2 ft (discharge unknown) and was the highest since at least 1924, from information by local resident. A flood in 1915 was 2 ft higher than the 1939 flood, from information by local resident.
EXTREMES FOR CURRENT YEAR. Maximum discharge, 154 ft 3 /s Aug. 8 at 1345 hours (gage height, 4.01 ft), no peak above base of 500 ft'/s; no flow Oct. 4, 5.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEF
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINCFSMIN.AC -FT
CAL YRWTR YR
.02
.02
.01
.00
.00
.09
.44
.25
.18
.15
.15
.15
.16
.15
.15
.14
.14
.14
.14
.13
.12
.11
.11
.10
.11
.11
.11
.11
.11
.11
.12
3.83.12.44.00.01.017.6
1 982 TOTAL1 983 TOTAL
.12
.18
.56
.24
.22
.26
.28
.28
.28
.32
.36
.36
.31
.30
.32
.33
.33
.33
.44
.38
.37
.35
.35
.43
.37
3.15.04.64.03.5
28.27.945.0.12.08.0956
955.091825.72
3.23.34.43.63.5
3.33.33.33.13.9
4.23.83.84.04.0
3.83.83.83.63.5
3.53.43.33.22.9
3.14.33.12.42.52.4
107.33.464.42.4.28.33213
MEANMEAN
4.43.63.53.73.9
4.04.04.04.13.9
3.73.53.53.53.1
3.33.34.03.94.1
4.44.34.34.64.7
4.64.64.74.74.54.7
125.14.044.73.1.33.38248
2.625.00
4.54.34.14.15.0
4.54.34.37.17.4
7.27.26.97.2
13
1010101010
10109.99.69.6
9.39.39.0
217.87.78
134.1.64.66432
MAX 258MAX 31
9.08.98.7
1814
1212111111
1010101010
1514121212
1211231918
311918171716
431.613.9
318.71.141.32856
MIN .00MIN .00
1514131312
1211111010
9.89.59.38.88.4
8.07.67.37.06.5
6.05.65.14.64.5
4.34.34.03.83.8
249.28.31
153.8.68.76494
CFSM .22CFSM .41
3.73.53.22.92.7
2.72.52.32.32.6
4.43.12.72.53.3
2.52.33.22.4
14
2712119.99.0
8.77.87.26.96.66.3
181.25.85
272.3.48.55359
IN 2IN 5
6.36.05.45.27.5
7.56.96.35.45.2
4.34.13.3
1711
8.48.47.87.57.2
7.26.66.25.86.0
5.45.34.84.54.0
196.56.55
173.3.54.60390
.91 AC-FT
.57 AC-FT
3.73.53.33.13.2
3.02.62.42.22.1
2.02.22.73.12.8
3.5228.37.77.1
6.86.56.25.85.5
5.14.84.64.34.03.7
147.84.77
222.0.39.45293
18903620
3.43.02.92.92.6
2.72.515b.54.2
3.63.33.23.02.8
2.72.52.42.62.5
2.22.11.91.92.1
1.81.71.81.81.61.6
93.83.03
151.6.25.29186
1.51.51 .41.41.3
1.21.11.01.41.1
.94
.78
.54
.23
.17
.16
.103.84.02.7
2.11.91.7.6.6
.6
.6
.61 .71.6
43.321.444.0.10.12.1386
-94-
COLORADO RIVER BASIN
08158810 BEAR CREEK BELOW FARM ROAD 1826 NEAR DRIFTWOOD, TX--Continued
U'ATER-QUALITY RECORDS
PERIOD OF RECORD.--Chemical, biochemical, and pesticide analyses: October 1979 to September 1980.
March 1978 to current year. Radioehemica1 analyses
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 198J
DATE
FEB09...
MAR01 ...
TIME
STREAM-FLOW,INSTANTANEOUS(CFS)
SPECIFICCONDUCTANCE(UMHOS)
PH(STANDARD
UNITS)
TEMPERATURE(DEC C)
1230
0935 1.7
452
510
13.5
15.0
COLOR(PLATINUM-COBALTUNITS)
TURBIDITY
(NTU)
OXYGEN,DIS
SOLVED(MG/L)
OXYGEN,DISSOLVED(PERCENT
SATURATION)
OXYGENDEMAND,BIOCHEMICAL,b DAY(MG/L)
COLl-FORM ,FECAL,0.7UM-MF(COLS./100 ML)
STREPTOCOCCIFECAL,
KF AGAR(COLS.
HER100 ML)
10 5J
1.0
9.5
9.4
95
97
1 .0
.5
DATE
FEB09...
MAR01... 250
HARDNESS(MG/LASCAC03)
HARDNESS,
NONCAR-BONATE(MG/LCAC03)
CALCIUMDISSOLVED(MG/LAS CA)
MAGNESIUM,DIS
SOLVED(MG/LAS MG)
SODIUM,DIS
SOLVED(MG/LAS NA)
230 30
21
69
74
14
16
7.1
8.2
SODIUMAD
SORPTION
RATIO
POTASSIUM,DIS
SOLVED(MG/LAS K)
ALKALINITYFIELD(MG/LASCAC03)
SULFATEDISSOLVED(MG/L
AS S04)
CHLORIDE ,DISSOLVED(MG/LAS CL)
FLUO-RIDE,DIS
SOLVED(MG/LAS F)
SILICA,DISSOLVED(MG/LAS
SI02)
1 .0
.7
200
230
24
27
.20
.20
7. 2
7.6
DATE
FEB09...
MAR01...
SOLIDS, SUM OF CONSTI TUENTS,
DISSOLVED(MG/L)
254
287
SOLIDS, RESIDUE SOLIDS, NITRO- AT 105 VOLA- GEN, DEC. C, TILE, NITRATE SUS- SUS- TOTALPENDED PENDED (MG/L(KG/L) (MG/L) AS
63 40
<1 <1
N)
.28
--
NITRO GEN,
NITRITE TOTAL(MG/LAS
<
N)
.020
.020
NITRO GEN,
N02+N03 TOTAL(MG/LAS N)
.30
.30
NITRO GEN,
AMMONIA TOTAL(MG/LAS N)
.090
.090
NITRO- NITRO- GEN.AM- GEN, MONIA + PHOS- CARBON,
ORGANIC ORGANIC PHORUS, ORGANIC- TOTAL TOTAL TOTAL TOTAL(MG/LAS N)
.41
.21
(MG/L (MG/L (MG/LAS N) AS P) AS C)
.50 .040 3.6
.30 .010 1.3
CHRO-ARSENIC
DISSOLVED
TIME (UG/LDATE AS
FEB09... 1230
MAR01... 0935
AS)
<1
<1
BARIUM,DIS
SOLVED(UG/LAS BA)
24
27
CADMIUMDIS
SOLVED(UG/LAS
MANGA-
"
LEAD,DIS
SOLVED(UG/L
DATE AS PB)
FEB09... 2
MAR01... 2
NESE,DIS-
SOLVED(UG/LAS MN)
3
<1
MERCURYDIS
SOLVED(UG/LAS HG)
<. 1
<. 1
CD)
<1
<1
MIUM,DISSOLVED(UG/LAS CR)
<10
10
COPPER,DIS .SOLVED(UG/LAS CU)
5
<1
IRON,DIS
SOLVED(UG/LAS FE)
6
<3
SELENIUM. SILVER,DIS
SOLVED(UG/LAS SE)
1
1
DIS-SOLVED(UG/LAS AG)
<1
<1
ZINCDIS
t-
SOLVED(UG/LAS ZN)
<3
5
DATE
FEB 09...
TIME
1230
ATRA- ATRA- CYAN- CYPRA-AME- TONE ZINE, AZINE ZINETRYNE TOTAL TOTAL TOTAL TOTALTOTAL (UG/L) (UG/L) (UG/L) (UG/L)
METHO- PROME-MYL TONE
TOTAL TOTAL(UG/L) (UG/L)
<2.0
DATE
FEB 09...
PROME- PRO- , SIMA- SIME- SIME-TRYNE PAZINE PROPHAM SEVIN, ZINE TONE TRYNETOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
<2.0
-95-<2.0
5TA. NC. Del
5'5i1
0
ST3RM RAINFALL AND RjNGF- RECORD
1933 WATER YEAR
SEAR CR
EEK,
octOW PARS'
ROAD 1326
NE'V
R CRI
PT^OOD- TEXAS
STORM OF HAY 20-21, 1933
DAT;
i TIME
MAY 20
0000
0445
0 y 0
01 13J
1 1-0
1200
1 21 5
1 230
1 24:,
1 300
1315
1 345
100
1 41 5
1*30
1445
150J
151
j1530
1 it
b1 1,
001-1
51o3u
1 'J45
1 70 c
1730
1 ;.
1 5
1 *7 J \J
1 y4;
2.15
2u-+ 5
240 0
M AY
210 j G 0
OiOu
0:>1 5
C i 3
J0545
0 sO
jOo3 j
________ -_-_ __ s
a
G1SER
|
0.0
0.01
O.Ca
J . 1
C.
0.34
0.3.
1 .05
1.22
1 . 4o
1.50
1 .5
11 .51
1 .51
1 .51
1.51
1 .5
11.51
1.51
1.51
1.51
1.51
1 .5
11 .5
11.^1
1.51
1.51
1 .5
11 .5
11 .5
11.51
1 . 51
1.52
1.52
1 . c G
1 . S3
2 .
1 i
2.2-
.2.^0
2.3-
|
E N
0 M
5I
I
A Z C U M
. ft E
I u-iT ED
PRECIP.
IN. C.O
0.01
0 0 6
C.12
0.34
0.53
1 .05
1 .2
21 .4.
1 .50
1 .51
1 .51
1 .5
11 .51
1 .51
1 .5
11 .51
1 .51
1 .51
1 .51
1 .5
11 .5
11 .51
1 .51
1 .5
11 .51
1 .51
1 .51
1 .5
11 .5
11 .51
1 .52
1 .52
1 .50
1 . o3
2.13
2.2*
2.3j
2 . 34
DISCHARGE
I\
CF3
2.3
3.1
3.1
2.9
2.9
2.9
? . o
2.9
2.9
2.9
2 . 9
2.9
4.9
6.3
9.3
16.-
024.0
29.0
53.0
-3.3
S5.0
79.0
71 .0
57.0
49.0
43.
C33.0
26.C
22.0
20. C
13.0
13.0
13.0
9.9
9.9
5.6
9.6
9.3
9.3
ACCUM.
RUNO
FF
IN.
0.0007
0.0025
0.003s
0. 0043
0. 0044
0.0045
0.0046
0.0047
0.0043
0.0340
0.0050
0.0051
0.0053
0.0055
0.0053
0.00o3
0.0071
O.OOSO
0 . 0 J 9 3
0.0120
0.0153
0.0175
0.0201
0.0219
0 . u
2 42
0. 02 7o
0.03^6
0.0332
J.0350
0.0363
0. J408
0.0455
0.0455
0.0509
0.0512
J.0515
0.051S
0.0523
0.0527
C> O O O O C) O CJ Oxj C/' &' O; (.' ~*J ~si ~*j OO *'- »^J ' O + - VAI » *"O ui O Ui C_i \ji O u. ui
f- *>*--*>*-
II O O O O O O O LJ O O O O O O O O O O CJ O O O O OII
II IIII O C_ l_) O O O O C
II *> *- O> vji O <- O s
oooooooc.
-»-»OOCJOC.OC.
o ^ S r j S ^o ^ ^ o
C. 0 C' O
0 0 C ) O
0
o
a
o o
o ov_n <-
0
O
4
O O
o c Wl L.-I
O t\J
i
i1 XJ i C-
1 2 0 1 111 111
m
e- n
c:
*
08158820 BEAR CREEK AT FARM ROAD 1626 NEAR MANCHACA, TEX. (Flood-hydrograph partial-record gage)
LOCATION. Lat 30 0 08'25", long 97°50 I 50", Travis County, at culvert on Farm Road 1626, 1 mile west of Manchaca, Texas.
DRAINAGE AREA.--24.0 mi 2 .
PERIOD OF RECORD. July 1979 to current year.
GAGE.--Digital water-stage recorder and crest-stage gage. Datum of gage is 643.63 ft NGVD.
REMARKS. Records fair.
EXTREMES FOR PERIOD OF RECORD. Maximum discharge, 16,800 ft3 /s June 11, 1981 (gage height, 15.60 ft).
EXTREMES FOR CURRENT YEAR. Maximum discharge, 397 ft3 /s May 21 (gage height 4.87 ft).
-98-
O O O O O O O
O O O O O O O O O O O O O O
O O T- fM 'M to --t «r\O O O O O O O O
O O O O O <" ) O O 'O O O Oo o o o o o o o
O O O O '3 O
a o o 'o o o D o o o o ::> o
O O O O O O O O O D O O O O O O O O O O O O O O
a o o o o o o o o o o a CM o o o o o o o o o o o -j- ai CM -o ft o -t «- T- ft <j o o o o
ft -4- -t ^t * -* ft ft r\l T r- r>J -.» O ml
r-> O O o O O O
O * r r" r *
T- * ,-\i j f*< tn r\i o r r- .'M r\i CM rj :\j -g i g O O o r PO oo O r>J -t u^ 1/1 ir\ IA i/-\ i/^> u\ i.-» >n
.) -.t r- r«-
O O O Cl O r- T- r- T- fM 'J f O <M
f\j r") tA A i j 'A '_> 'A '"-3 m <'J> «^> <*"D n O \s\ < "3 v* ". > p n r-> -\j ~3 -~3 r~> f^ ^i .-3 «n O IA <~D A ~'} .'.J *"> '"I O > «A 'AO -t T PA 4- T) t- t T PA Pt '.I r- ft .T O r- -t ^J n "1 O O O r"3 O r- rt * <~> r- t-1 n t~ Pt i T (t t
-J O r 'J r- r r- , T ^- T r- , oj f\j r\j oj r^j /-^ rvl f\i OJ <T fT O ' J C> TJ {'.I O <".» C) f J O C"' Of.) O ( ) O O ' .j
-GOT-
I INJ fNj » * » * * *
4- * NO c,j Cr U v/- v/iI O L/J + * (_J oj c-4 ot, c. u> v- o < c. c.
t it t t t- u<
i\j INI r\i ru
rvj ro ro roIN> INJ INJ INJ
»-» » ru rv» INJ rvi INJ oJ rj ivi -»-» » i/.' v.'i -\J o -\» ~o o r\j oj wi a -o -\J o vo * <} UM 4^- -«J vO '^4 >O OU I\J *j C" Ul ^J Ul OJ <> UJ o o o o o o o o cj o o a o cj o a o
O O O O O CJ O O CJ O O O O O CJ O O O CJ O
-»-»-»-»-»-» C- C. O O O O O C> C. Cj O CJ C. C'
C./ NO *xj *4j V/1. Ov> 4 "^ O" 4 f\) CJ
INJ fvi » »
Cw
II O II Tl
XJ P>c oiS Oo c.
11 .£
Ill IIAJ II
COLORADO RIVER BASIN
08158825 LITTLE BEAR CREEK AT FARM ROAD 1626 NEAR MANCHACA, TX (Flood-hydrograph partial-record station)
LOCATION.--Lat 30°07'31", long 97°51'43", Hays County, Hydrologic Unit 12090205, at downstream side of culvert on Farm Road 1626 and 2.1 mi southwest of Manchaca.
DRAINAGE AREA. 21.0 mi 2.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--July 1979 to current year.
GAGE.--Flood-hydrograph recorder and crest-stage gage. Datum of gage is 668.67 ft Nstional Geodetic Vertical Datum of 1929.
REMARKS.--Additional storm rainfall-runoff data for this site can be obtained from the report "Hydrologic Data for Urban Studies in the Austin, Texas Metropolitan Area, 1983." A recording rain gage is located in the watershed.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 5.530 ft 3 /s June'11, 1981 (gage height. 12.30 ft).
EXTREMES FOR CURRENT YEAR.--Maximum discharge. 814 ft 3 /s May 21 at 0900 hours (gage height, 6.45 ft).
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Chemical, biochemical, and pesticide analyses: October 1978 to current year. Radiochemical analy ses: October 1979 to September 1980.
WATER QUALITY DATA. WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB09...
SEP19...
TIME
1355
1210
STREAM- FLOW, INSTAN TANEOUS (CFS)
.59
381
SPE CIFIC CON DUCT ANCE (UMHOS)
518
143
PH(STAND ARD
UNITS)
7.8
7.6
TEMPER ATURE (DEC C)
13.0
23.0
COLOR (PLAT INUM- COBALT UNITS)
50
80
TUR BID ITY (NTU)
85
57
OXYGEN,DIS
SOLVED (MG/L)
10.2
7.4
OXYGEN,DIS SOLVED (PER CENT
SATUR ATION)
100
88
OXYGEN DEMAND, BIO CHEM ICAL. 5 DAY (MG/L)
3.3
2.4
COLI-FORM.FECAL,0.7UM-MF (COLS./ 100 ML)
K34000
14000
STREP TOCOCCIFECAL.
KF AGAR (COLS.PER
100 ML)
39000
51000
DATE
HARD NESS (MG/L AS CAC03)
FEB09... 240
SEP19... 66
HARD NESS,
NONCAR- BONATE (MG/L CAC03)
101
7
CALCIUM DIS SOLVED (MG/L AS CA)
92
24
MAGNE SIUM, SODIUM. DIS- DIS SOLVED SOLVED (MG/L (MG/L AS MG) AS NA)
2.6
1.5
11
1.5
SODIUMAD
SORP TION
RATIO
POTAS- ALKA- SIUM, LINITY
FIELD (MG/L AS
DIS SOLVED (MG/L AS K)
3.6
4.4
SULFATE DIS SOLVED (MG/L
CAC03) AS S04)
140
59
84
17
CHLO RIDE. DIS SOLVED (MG/L AS CL)
31
2.3
FLUO- RIDE. DIS SOLVED (MG/L AS F)
.20
SILICA. DIS SOLVED (MG/L AS SI02)
9.
13
DATE
FEB09...
SEP19. ..
SOLIDS, SOLIDS,SUM OF RESIDUE SOLIDS.CONSTI- AT 105 VOLA-TUENTS. DEC. C, TILE,
DIS- SUS- SUS-SOLVED FENDED FENDED(MG/L) (MG/L) (MG/L)
318
99
101
51
NITRO GEN,
NITRO GEN.
NITRATE NITRITETOTAL TOTAL(MG/L (MG/LAS N)
.36
.13
AS N)
.040
.070
NITRO GEN,
N02+N03 TOTAL (MG/L AS N)
.40
.20
NITRO GEN,
AMMONIA TOTAL (MG/L AS N)
.060
.080
NITRO GEN.
ORGANIC TOTAL (MG/L AS N)
1.3
1.1
NITRO GEN, AM MONIA + ORGANIC TOTAL (MG/L AS N)
1.40
1 .20
PHOS PHORUS, TOTAL (MG/L AS P)
.470
.140
CARBON .ORGANIC TOTAL (MG/L AS C)
9.0
12
DATE
FEB09. ..
SEP19. ..
TIME
1355
1210
ARSENIC BARIUM,DIS- DIS
SOLVED SOLVED (UG/L AS AS)
(UG/L AS BA)
30
14
CADMIUMDIS
SOLVED (UG/L AS CD)
CHRO MIUM, DIS SOLVED (UG/L AS CR)
COPPER. DIS SOLVED (UG/L AS CU)
IRON. DIS
SOLVED (UG/L AS FE)
36
110
-101-
COLORADO RIVER BASIN
08158825 LITTLE BEAR CREEK AT FARM ROAD 1626 NEAR MANCHACA, TX--Continued
WATER QUALITY DATA. WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB09...
SEP19...
LEAD.DISSOLVED(UG/L AS PB)
MANGANESE.DISSOLVED(UG/L AS MN)
MERCURYDISSOLVED(UG/L AS HG)
SELENIUM.DISSOLVED(UG/L AS SE)
SILVER.DISSOLVED(UG/L AS AG)
ZINC.DISSOLVED(UG/L AS ZN)
21 12
12
DATE
FEE 09...
TIME
1355
AME-TRYNETOTAL
ATRA- TONE TOTAL (UG/L)
ATRA- CYAN-ZINE. AZINETOTAL TOTAL(UG/L) (UG/L)
CYPRA- ZINE TOTAL (UG/L)
METHO- PROME-MYL TONE
TOTAL TOTAL(UG/L) (UG/L)
<2.0
PROME- PRO- SIMA- SIME- SIME-TRYNE PAZINE PROPHAM SEVIN. ZINE TONE TRYNETOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL
DATE (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L)
FEB 09... <2.0 <2.0
-102-
-eoi-II II
II II ^2 I rvj r\j » » ci O Cj O c > o r > c< o O O O c j <_> o o O i> r\j r\j f\j r<j r,j n > r^ t\j r-j AJ r\j o O O i. ) c > o s> i * --» i- c o ix o c-. O' r,< ix. rv.> r\ > » » » c.i c -. c? <.<-< -T o. OJ IM r\j » » » » c Ci -c> r- c^ » o c.' -< i c, c_j LJ v_> i -F- e>i » O *- 01 » C) f OJ » O 4- oj » t_> rj 4- i..j > o *- oj C: * Ox ( > OJ ^-- » o i o r r i c >-'i v,p> o e-- o v. o v c' -i cj w C' >./> c- v. c.; -* C o o v. rj v c v c en o en i/> r vi v cj »I -» O
i i i
i
i i i -\i i' t i ^ f\^ r-j r»j p.> fv* r\.» r\^ r\j iu rv, ro r\> r\j PO r^ r j ivj ro r\) t\, r\j r\j r^ r^ r« * c/ C1 c* O O O CO o O
i '.', _> C«.' ,r> O' 01 a. C' ir- '-0 c . ; >> 00 :x o^ o> oci fx: r»j >j, ex r»» C-; on (X '<j ~-j OJ vi a r\) » » » o ri O
I 1I
I Ii
II II II II il n li
n n II II
I
1 1I I I
1 I I
i i
1 I
i Ii I i I i i I I
I I I I I
i I i i I
I I I
1 I 1 I I i
i 1 1 i I rv/ INJ ro ivj r\i i\j t\j t\j t\j r\j i\j r\j (\^ r^> (\^ i\^ PJ r\j i\> r^> (\^ ro 1*0 r\j 1*0 r\> (\^ (\^ -^ cj CJ CJ i"Tj C* Cj Cj CJ *~*
I
i i I 1
1 L^^^OCl*.'!^"Vj"VJ
1 _» _» oj f. rv) U> O OJ vi ( j *- ixi -^J *^ O O t"D <J O C) O O O O O O O O O O O O O O O O O O 1
1 1 1 O O O O C' O C. O Cj O O O CJ O O O CJ O C O O CO O O O O O CJ O C. Cj O O O O O CJ
II C.' O O Cj C"' O 0 O O O CJ C. O O O O O O O C) Cj C.< O O O C. O C' O O CJ C' O C CJ C_- C> O II v/i v «.-" vi v. en vi en en v vn vi vyi en en e/i *- * e-J (\j O O O
II
C3 I.- -H
-1
1 1 1
-> 1 r~ 1
1 I
1
1 1
I
1 1 11
1
1
1C.1
t>
o
rn
*:
CI
Jl
Mi
111
1 1
1 11 1
1 1 1 1
11 1 1 1 1 1 I
1 I
: T3 r.T) t-
n IT' <jz o j
TJ n
0Tl t
A C
X C "1
r~ >--t ( < r- rp
ir 111 I-
("i
in rr
t- (
i->X)
O
O
O r j o
r-'
oI
ci
-H III XI>
C/l
CJ
^i
CJ
Tl
I -^.
N
Oc/.
1 1-H 0
, 0c c;
n
c-
H ri : a:
!-
Ill
J I>
; o
i ClJS
L^
-H
f>
;.:0
u
rx
Iv/ .j
i/- -1
O XJ
t'
Tl t'rn
L* ^
c.
« C_
f in i.
AJ in ( i O
L.)
4, lAJ O-l
iL i» 1inAJ
-< ni j>
COLORADO RIVER BASIN
08158840 SLAUGHTER CREEK AT FARM ROAD 1826 NEAR AUSTIN, TX
LOCATION.--Lat 30°12'32", long 97°54'11", Travls County, HydroLogic Unit 12090205, 1.7 mi south of the intersection of U.S. Highway 290 and Farm Road 1826 and 11.9 mi southwest of the State Capitol Building in Austin.
DRAINAGE AREA.--8.24 mi2.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. January 1978 to current year.
GAGE.--Water-stage recorder. Datum of gage is 876.14 ft National Geodetic Vertical Datum of 1929.
REMARKS.--Water-discharge records good. No known regulation or diversion. There is a recording rain gage in the watershed.
AVERAGE DISCHARGE.--5 years (water years 1979-83), 5.80 ft 3 /s (9.56 in/yr), 4,200 acre-ft/yr.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 4,080 ft 3 /s June 11, 1981 (gage height, 10.79 ft); no flow at times most years.
EXTREMES FOR CURRENT YEAR.--Maximum discharge, 933 ft 3 /s Aug. 8 at 1330 hours (gage height, 6.88 ft), no other peak above base of 500 ft 3 /s; no flow for several days in October and November.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
12345
678910
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINCFSMIN.AC-FT
CAL YRWTR YR
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00.000.00.00
.000.00.00
1982 TOTAL1983 TOTAL
.00
.03
.01
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.11
.02
.00
.00
.00---
.17.006.11.00
.001.00.3
771 .87855.08
.00
.02
.48
.06
.05
.03
.03
.03
.02
.04
.14
.06
.06
.08
.08
.07
.07
.08
.08
.08
.08
.08
.08
.08
.07
.07
.27
.21
.15
.09
.14
2.88.093.48.00.01.015.7
MEANMEAN
.68
.37
.35
.38
.38
.38
.38
.38
.38
.35
.34
.34
.34
.34
.27
.27
.27
.34
.34
.34
.59
.52
.52
.52
.46
.46
.46
.46
.46
.46
.46
12.59.41.68.27.05.0625
2.11 MAX2.34 MAX
.52
.52
.46
.46
.74
.66
.66
.682.71 .1
1 .11 .11 .11 .04.0
4.63.83.73.74.1
4.14.14.14.13.7
3.43.43.1......---
66.702.384.6.46.29.30132
249 MIN93 MIN
3.12.92.97.26.2
4.43.73.43.13.1
2.92.92.93.13.4
117.25.75.75.7
4.64.4
351917
932718161514
353.511 .4
932.91.381 .60701
.00
.00
129.08.48.36.6
5.75.34.94.44.2
4.03.73.73.13.1
2.92.92.92.92.9
2.92.92.82.62.6
2.42.42.12.02.0
125.64.19
122.0.51.57249
CFSM .26CFSM .28
1 .91.61 .41 .1.97
.82
.79
.64
.59
.34
3.0.93.73.66.94
.76
.611 .1.68
14
232.01 .0.86.70
.64
.65
.58
.57
.52
.46
65.042.10
23.46.26.29129
IN 3.48IN 3.86
.52
.52
.52
.545.6
.7
.6
.2
.1
.1
.97
.90
.823.92.0
4.82.72.32.01 .9
1 .81 .61 .61 .51 .7
1 .41 .21 .0.97.79---
50.251 .685.6.52.20.23100
AC-FTAC-FT
.80
.62
.52
.50
.49
.52
.45
.41
.38
.36
.32
.32
.48
.74
.60
1 .31 .4.73.61.52
.52
.46
.45
.41
.38
.40
.38
.36
.33
.29
.27
16.32.531 .4.27.06.0732
15301700
.26
.24
.22
.21
.20
.18
.2851
1 .41.0
.89
.82
.82
.82
.82
.82
.82
.82
.82
.82
.82
.82
.73
.64
.59
.59
.59
.72
.72
.59
.63
70.702.28
51.18.28.32140
.53
.52
.52
.49
.43
.38
.37
.24
.48
.27
.24
.24
.20
.18
.18
.18
.1825278.7
5.03.22.82.62.2
2.22.01.91 .61.5---
91.333.04
27.18.37.41181
-104-
COLORADO RIVER BASIN
08158840 SLAUGHTER CREEK AT FARM ROAD 1826 NEAR AUSTIN, TX--Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Chemical and biochemical analyses: June to September 1983.
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
OXYGEN, OXYGEN COLI- STREP-
TIMEDATE
JUN09. ..
SEP19. ..
DATE
JUN09...
SEP19. ..
STREAM-FLOW,INSTANTANEOUS(CFS)
SPECIFICCONDUCTANCE(UMHOS)
PH(STANDARD
UNITS)
TEMPERATURE(DEC C)
COLOR(PLATINUM-COBALTUNITS)
TURBIDITY
(NTU)
OXYGEN,DIS
SOLVED(MG/L)
DISSOLVED(PERCENT
SATURATION)
DEMAND,BIOCHEMICAL,5 DAY(MG/L)
FORM,FECAL,0.7UM-MF(COLS./100 ML)
TOCOCCIFECAL,
KF AGAR(COLS.PER
100 ML)
1115
1300
HARDNESS(MG/LASCAC03)
1.2
40
HARDNESS.
NONCAR-BONATE(MG/LCAC03)
749
426
CALCIUMDISSOLVED(MG/LAS CA)
7.7
8.0
MAGNESIUM,DISSOLVED(MG/LAS MG)
23.5
23.0
SODIUM,DISSOLVED(MG/LAS NA)
<1
25
SODIUMAD
SORPTION
RATIO
2.0
19
POTASSIUM,DISSOLVED(MG/LAS K)
12.6
7.7
ALKALINITYFIELD(KG/LASCAC03)
153
92
SULFATEDISSOLVED(MG/L
AS S04)
2.5
1.4
CHLORIDE,DISSOLVED(MG/LAS CL)
220
4300
FLUO-RIDE,DISSOLVED(MG/LAS F)
400
14000
SILICA,DISSOLVED(KG/LASSI02)
340
190
77
44
92
56
26
13
23
12
.7
2.2
260
150
73
51
47
22
DATE
JUN09...
SEP19...
SOLIDS,SUM OFCONSTITUENTS,
DISSOLVED(MG/L)
SOLIDS,RESIDUEAT 105DEC. C,SUSPENDED(MG/L)
SOLIDS.VOLATILE,SUSPENDED(MG/L)
NITROGEN,
NITRATETOTAL(MG/LAS N)
NITROGEN,
NITRITETOTAL(MG/LAS N)
NITROGEN,
N02+N03TOTAL(MG/LAS N)
NITRO- NITRO- NITRO- GEN.AM-GEN. GEN, MONIA + PHOS-
AMMONIA ORGANIC ORGANIC PHORUS,TOTAL TOTAL TOTAL TOTAL(MG/L (MG/L (MG/L (MG/LAS N) AS N) AS N) AS P)
425
255 28 .18
<.020
.020 .20
.090
.040
.21
.46
.30
.50
.010
.020
.20
.10
CARBON,ORGANICTOTAL(MG/LAS C)
1.4
5.4
6.8
8.7
DATE
SEP 19. ..
TIME
1300
ARSENICDIS
SOLVED(UG/L AS AS)
BARIUM,DIS
SOLVED(UG/L AS BA)
CADMIUMDIS
SOLVED(UG/L AS CD)
CHROMIUM.DISSOLVED(UG/L AS CR)
COPPER,DISSOLVED(UG/L AS CU)
IRON,DIS
SOLVED(UG/L AS FE)
<1 31 <1 10 <3
DATE
SEP 19. ..
LEAD,DIS
SOLVED(UG/LAS PB)
MANGANESE,DIS
SOLVED(UG/LAS MN)
MERCURYDIS
SOLVED(UG/LAS HG)
SELENIUM,DIS
SOLVED(UG/LAS SE)
SILVER,DIS
SOLVED(UG/LAS AG)
ZINC,DIS
SOLVED(UG/LAS ZN)
<1 <1
-105-
-901-
^^..^---^----.^-^^--.^-^-.^-^--^-.-.^-.-oocjo^
C"1 v.'' vi V' C- C_' c".: O vi C v.ci C O vi C' v.' c._> t . i- . O v C-> v.-1 C > *-n d vi c_> vi C ; v C vi c, vi V v." V c.,- rvjC.)
^ _ ,_i__i_i_»_._»_»_»_.^_i__i_»__l_1___,_k-1_4_»_.-1-1nrjr.r, o , , o o
VI VI VI VI VI VI V/l VI VI VI VI VI V»"> VI V-H \yi VI VI VI VI VI Vi VI 'VI VI t^ J> C/4 * (_l "*^ -f~- rvj PO -^ CJ C_> CT.'
11 C1 I11 r Ii ei i1 K
i ;1 !
1 1 -1111 -»
i r" i i--i iiii - iiii1
iiiii i i
liii1 C.ii ii1 C
1 111
11 "i11 C1i r
1 Ci i r
i ,1
;11111 11
1
111111
1 1
11111111 1 1 11 ~\1 .<1 n l1 -? r1 t- \ "I i
-i>^i
^^;i
-
>
>
i
J
_
£
r
n
j
J iJ i-
' i,"i D
J i t~
U'tt~
i^C
U.-H
n.jj
ri
rri in;*,
£?
\
TJ-
^
O£>
CJ
_ k
y
f>
i^nE-
CI/"* (
2X
-H
Ml Xt>C/>
-H
C XI
0Tl
3: x--<
e
0>i'j
i i>1 O- fl
<_H 2 l
o 4> r-j a
UJ -> t\J ^.o
v^J * * O O O O O CJ
> O O O O O CJ O O O O O CJ O O O O O O O O O O O O tv> IV rv> O -O -vl (». CO 00 cr
O C_> O C.- O O O O CT' O O C O O O O O O O O O CJ O O C_ O O C^ O O O C" C_, O CD C. O O
O C C) C. O O O O O O O C' O O CJ C, O O O C) O O O O O CJ CJ O O C- O O O O O <_> C Oo c;Tl .Z
08158860 SLAUGHTER CREEK AT FARM ROAD 2304 NEAR AUSTIN, TX (Flood-hydropraph partial-record gage)
Location.--Lat 30 009'43", long 97 049'55", Travis County, on downstream side of bridge on Farm Road 2304 and 9.4 miles southwest of the State Capitol Building in Austin.
DRAINAGE AREA. 23.1 mi 2.
PERIOD OF RECORD. March 1978 to current year.
GAGE. Digital water-stage recorder and crest-stage gage. Datum of gage is 654.80 ft NGVD.
REMARKS. Records fair.
EXTREMES FOR PERIOD OF RECORD. Maximum discharge, 8,340 ft3/s June 11, 1981 (gage height, 12.40).
EXTREMES FOR CURRENT YEAR. No flow for entire year.
-107-
08158880 BOGGY CREEK (SOUTH) AT CIRCLE S ROAD, AUSTIN, TEX. (Flood-hydrograph partial-record gage)
LOCATION. Lat 300 10'50", long 97 0 46'55", Travis County, on downstream side of bridge on Circle S Road and 7.0 mi south of the State Capitol Building in Austin.
DRAINAGE AREA. 3.58 mi 2 .
PERIOD OF RECORD. April 1976 to current year.
REVISED RECORDS. Open-file report 82-506: 1979 maximum.
GAGE.--Digital water-stage recorder and crest-stage gage. Datum of gage is 591.66 ft NGVD.
REMARKS. Records fair.
EXTREMES FOR PERIOD OF RECORD. Maximum discharge, 2,920 ft3 /s (gage height, 10.56 ft).
EXTREMES FOR CURRENT YEAR. Maximum discharge, 1,740 ft3 /s Aug. 8 (gage height 7.83 ft).
-108-
-601-
n r. r ! . » _>II * * l_*i <_» Jl OJ O.
/' C. C. C u C
c c. .r- *-cr ij
o-- O' i\j a. -t-- iv.
NO <> *' sj >C U in1 O> t>' O
o O ci i > o o c_j o
I Ci CJ CJ O Cj OOC'OCjC. CjOOC.'OcjOOOC/ OOOC-C-OOC-OOOC'OCJOO
c/i cf> cr ui f ^ *- w oj c-j ixi » -» c> o o Cj o o c o o o c- c. r.j o o o c o
111
1I ori <J1 Ul
n >- nI nc1 Ul1 f 1 <t\ x1
II roI coI f>I »-Iiii 11iiiI
iIiIiiiiIIi n1 IV 1 Oi '-ji <ii1 OCii 111 11i :.~> i f^i JDi <v.i1 O
i
1 LL 1 .21 r H
1 <*1 IV
1
1 5!Ct-
1 O1 (-1 </l
11111 111111
IIII
111
II 1
II1
II111111
II IIIIIIIIIIIIII
1IIIIII OII 'O
II 'OII LT>II «-II ~r>
II OII .
1 O2T
II1 1 <t1 t 1 oo1
l
s:73 fo ;o -
in
rv
r :i j >i/ino
re t
o i-) *-<a i
t"O
*>»
V
oi
^
!j
LL O
3-
TCo1 I/)
1^1
Xiti^-
V
^nt-l/>o
V
n(.->Cf
(/I
u;_j
Cf
o
^-'i
rt--jo
^^
VI
LI111
ft.
D
>-. )
O0m
LL
^ H 31C
^ i/iH LL
O
-) U .1-
l. 0 3?T III l-l-t Ofj a.i
iiiiiiiliii
|tliiiiiiiii i
i
i
DC
I1J
in
*^
^3
^
Ml
O
<|
O1111111
111111111 1
1111 l/^1 !»
1 fU1 *~111
U!: 'hH1
^
tilt-
I
O
1 1in « ro o 'O o iO O V TI o T-
-4 -t -f -t ^/^ u~i
J f J O O O O
O O O o i/-^ rj
O K1 <M T- n oK1 T
O '>. o* O- "> T ./I in 10 ir> in ^">
rj CM r\i ro nj IM
- _»
1 >- >^ ^ Ox ,-K ,
in in in in ,/-, -o
r\j rj f\j fM c\j ,-o
^ r- J O " > in J 3
»- ro -.t u\ i? -j>- ro .0 11 f\ n » t O 0 o o f.i .-vi^
-110-
COLORADO RIVER BASIN
08158920 WILLIAMSON CREEK AT OAK HILL, TX
LOCATION. Lat 30°14'06", long 97°51 "36", Travis County, Hydrologic Unit 12090205, on downstream side of bridge on U.S. Highway 290 in Oak Hill, 0.8 mi east of the intersection of U.S. Highway 290 and State Highway 71, and 7.7 mi southwest of the State Capitol Building in Austin.
DRAINAGE AREA. 6.30 mi 2 .
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. January 1974 to February 1977 (periodic discharge measurements only), January 1978 to current year.
GAGE. Water-stage recorder and crest-stage gage. Datum of gage is 798.68 ft National Geodetic Vertical Datum of 1929 (levela from city of Austin bench mark).
REMARKS. Water-discharge records fair. Station is part of a hydrologic-research project to study rainfall-runoff relation for the Austin urban-rural areas. Station is equipped with automatic water-quality sampler. Two recording rain gages are located in the watershed.
AVERAGE DISCHARGE. 5 years, 4.71 ft'/s (10.15 in/yr), 3,410 acre-ft/yr.
EXTREMES FOR PERIOD OF RECORD. Maximum discharge, 4,170 ft'/s June 11, 1981 (gage height, 8.55 ft); no flow for many days each year.
EXTREMES FOR CURRENT YEAR. Maximum discharge, 756 ft 3 /s Aug. 8 at 1330 hours (gage height, 4.36 ft), no other peak above base of 500 ft 3 /s; no flow for many days.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXMINCFSMIN.AC -FT
CAL YRWTR YR
.00
.00
.00
.00
.00
.00
.01
.00
.00
.00
.00
.00.
.00
.00
.00
.00
.00
.00
.00.00
.00
.00
.00
.00
.00
.00
.00
.00.00.00.00
.01.000
.01
.00.000.00.02
1982 TOTAL1983 TOTAL
.00
.00
.00
.00
.00
.00
.00.00.00.00
.00
.00
.00
.00
.00
.00
.00
.00
.01
.00
.00
.00
.02
.11
.00
9.51 .1
.00
.00
.00
10.74.369.5.00.06.06
21
508.31801 .70
.00 4.0
.41 3.06.9 2.7
.00 2.7
.00 2.7
.00 2.7
.00 2.4
.00 2.3
.00 2.2
.16 2.0
.89 2.0
.00 2.0
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.83
.17
.29
.131.5
.6
.7
.2 1.5
.2 1.5
.2 1.5
.1 3.5
.8 1.8
.1 1.7
.0 1.6
.0 1.5
.1 1.8
.1 1.5
.8 1.5
.7 1.5
.5 1.7
.5 1.7.7 3.9 2.8
.7 2.9 6.2
.5 2.7 3.1
.0 2.3 2.9
.9 2.3 2.7
.7 2.3 2.7
.2 2.0 2.4
.0 2.0 2.4
.7 1
.7 1
.5 1
.5 1
.5 1
.5 1
.5
.2
.2
11.28 62.0 53.36 2.00 1.
.8 20
.7 5.5
.7 4.8
.7 32
.7 5.9
.6 4.84.44.13.5
.9 134.593 4.34
6.9 4.0 5.1 32.00 1.2 1.06 .32.07 .37
.0 1.531 .6932 .79
22 123 107 267
MEAN 1 .39 MAX 194MEAN 2.20 MAX 49
MIN .00MIN .00
3.43.02.83.02.8
3.02.92.72.42.3
2.32.32.83.13.0
3.03.13.22.82.7
2.72.1
.7
.5
.5
.5
.7
.7
.5
.4
73.92.46
3.41.4.39.44147
CFSM .22CFSM .35
.98
.85
.63
.58
.31
.21
.17
.11
.16
.88
7.0.00.00.00.03
.00
.001.9
.0135
393.92.72.22.1
2.01.92.02.22.82.9
112.523.63
39.00.58.66223
IN 3.00IN 4.73
3.6-3.93.94.4
18
4.62.82.52.52.4
2.62.62.48.62.9
4.42.62.32.32.0
2.01.71.71.72.1
1.51.51.41.21.0
97.13.24
181.0.51.57193
AC -FT1 AC -FT
1.21.0
.85
.841.4
.97.70.70.68.57
.55
.93
.851.71.7
7.72.41.2.85.57
.57
.46
.46
.70
.70
.46
.37
.17
.10
.01
.00
31.361 .017.7.00.16.19
62
10101590
.00.00.00.00.00
.001.8
35.29.20
.14
.07
.14
.02
.00
.00
.00
.00
.00
.00
.00
.00.00.00.00
.00
.004.0
.05
.00
.00
41 .711.35
35.00.21.25
83
.00
.00
.00
.00
.00
.0013
.0311
.09
.00
.00
.00
.00
.00
.00
.00494832
9.63.91.71 .21.0
.70
.57
.37
.29
.23
172.685.76
49.00.91
1 .02343
-111-
COLORADO RIVER BASIN
08158920 WILLIAMSON CREEK AT OAK HILL, TX--Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Occasional discharge measurements: January 1974 Co current year. Chemical, biochemical, and pesti cide analyses: January 1974 to current year. Radiochemcial analyses: October 1979 to September 1980.
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB09...
MAR01...
MAY20...20...20...20...20...20...
AUG08...08...08...08...08...08...
SEP .07...07...07...09...
DATE
FEB09..-
MAR01...
MAY20...20...20...20...20...20...
AUG08...08...08...08...08...08...
SEP07...07...07...09...
TIME
1300
1020
143814531508152315381553
123413001315133013451400
*
1700171517301525
HARDNESS(MG/LAS
CAC03)
140
340'--
81--
_-----.._-__
..79__61
STREAM-FLOW,
INSTANTANEOUS(CFS)
14
1.71"17
157396352452348
117726676443254145
117380145233
HARDNESS,
NONCAR-BONATE(MG/LCAC03)
24
54
_. 7
------_.--..
..5
..12
SPE CIFICCONDUCTANCE(UMHOS)
300
654
299181151175214226
206163145138150152
179
132
CALCIUMDISSOLVED(MG/LAS CA)
41
93
----
25--.-
-- ...-.-
..25
__19
PH(STANDARD
UNITS)
7.6
8.2
__--
7.9--..
--__ .-..__
7.8--
7.7
MAGNESIUM,DIS
SOLVED(MG/LAS MG)
10
27
--__
4.6 --
..----..
__4.1__
3.3
TEMPERATURE(DEC C)
13.0
16.0
___---- --
-- ----
.-
SODIUM,DIS
SOLVED(MG/LAS NA)
7.2
16
----
4.8--
-- --
3.8
3.1
COLOR(PLATINUM-COBALTUNITS)
15
5
___.40----..
--..
130 ..
15__7080
SODIUMAD
SORPTION
RATIO
.3
.4
__.2
--.. --
.2 .2
TURBIDITY
(NTU)
540
.80
.__.
1700----
______
880_-__
1500.-
1600570
POTASSIUM,DIS
SOLVED(MG/LAS K)
2.2
.8
____
3.1----
-- --
_-3.2..
2.8
OXYGEN ,DIS
SOLVED(MG/L)
9.4
13.8
__..--------
-- -- --
------
ALKALINITYFIELD(MG/LAS
CAC03)
120
290
----
74 --
-- -- --
74
49
OXYGEN , DIS SOLVED(PERCENT
SATURATION)
93
145
__..--------
---.--------
------
SULFATEDISSOLVED(MG/L
AS S04)
22
43
--
11----
-- --
13
..11
OXYGEN DEMAND, BIOCHEMICAL,5 DAY(MG/L)
4.4
.9
35--
14149.97.0
12------
4.84.3
----
6.8
CHLORIDE,DISSOLVED(MG/LAS CL)
16
30
----
5.3
-- --
6.1
4.8
COLI- FORM, FECAL ,0.7UM-MF(COLS./100 ML)
19000
80
52000280000200000
----
K230000
--..--------
------
120000
FLUO-RIDE,DIS
SOLVED(MG/LAS F)
.20
.20
----
.10 --
---- --
.10--
<.10
STREP TOCOCCIFECAL,
KF AGAR(COLS.
PER100 ML)
K120000
84
160000500000840000
----
340000
---- ------
----
140000
SILICA,DISSOLVED(MG/LASSI02)
4.1
2.8
------
4.7
------------
5.0--
4.3
-112-
COLORADO RIVER BASIN
08158920 WILLIAMSON CREEK AT OAKHILL, TX--Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB09...
MAR01...
MAY20...20...20...20...20...20...
AUG08...08...08...08...08...08...
SEP07...07...07...09...
SOLIDS, SOLIDS, SUM OF RESIDUE CONSTI- AT 105
DEC. C,SUS
PENDED (MG/L)
TUENTS,DIS
SOLVED (MG/L)
SOLIDS,VOLATILE,SUS
PENDED(MG/L)
NITROGEN.
NITRATETOTAL(MG/LAS N)
NITROGEN,
NITRITETOTAL(MG/LAS N)
NITROGEN,
N02+N03TOTAL(MG/LAS N)
NITROGEN,
AMMONIATOTAL(MG/LAS N)
NITROGEN,
ORGANICTOTAL(MG/LAS N)
NITROGEN, AMMONIA +ORGANICTOTAL(MG/LAS N)
PHOSPHORUS,TOTAL(MG/LAS P)
CARBON,ORGANICTOTAL(MG/LAS C).
175
387
103
105
78
618
3
2310
530
3110
3330952
DATE
FEB09...
MAR01...
MAY20...
AUG08...
SEP07...09...
53
<1
572
96
491
395169
TIME
1300
1020
1438
1300
17001525
.48
.46
.35
.34
.51
.020
<.020
.140
.150
.160
.190
.50
<.10
.60
.50
.50
.70
.090
.080
.560
.560
.420
.450
2.0
.42
9.4 9.4 4.9
2.7
2.10
.50
10.010.05.30
3.10
.45
.26
.45
.45
.22
.34
.44
.27
ARSENICDIS
SOLVED(UG/LAS AS)
.050
.040
.050
.050
.080
.060
.060
.130
BARIUM,DIS
SOLVED(UG/LAS BA)
.50
.30
.50
.50
.30
.40
.50
.40
CADMIUMDIS
SOLVED(UG/LAS CD)
.120
.090
.060
.060
.290
.080
.050
.380
CHROMIUM,DISSOLVED(UG/LAS CR)
5.47.9
2.1
1.9
7.7
7.01.8
COPPER,DISSOLVED(UG/LAS CU)
5.508.00
2.20
2.00
8.00<.207.002.20
IRON.DIS
SOLVED(UG/LAS FE)
.390
.100
.900
.800
.00
.530
.810
.30
.570
.470
.40
.30
.110
.020
16
2.5
377144
21
3452
30
21
18
26
32
<100
<100
10013
<1
<1
<1
<1
<1 <1
<10
<10
<10
<10
<10 10
36
<3
50
120
3080
DATE
FEB09. ..
MAY20...
AUG08...
DATE
FEB09...
MAR01 ...
MAY20...
AUG08...
SEP07...09...
TIME
1300
1453
1315
LEAD,DIS
SOLVED(UG/L AS PB)
MANGANESE,DIS
SOLVED(UG/L AS MN)
MERCURYDIS
SOLVED(UG/L AS HG)
SELENIUM,DIS
SOLVED(UG/L AS SE)
SILVER,DIS
SOLVED(UG/L AS AG)
ZINC,DIS
SOLVED(UG/L AS ZN)
AME-TRYNETOTAL
<10
10
102
ATRA- TONE TOTAL (UG/L)
<.1
<.1
<.1
<.1 <.1
ATRA- ZINE, TOTAL (UG/L)
<1
<1
<1
<1 <1
CYAN- AZINE TOTAL (UG/L)
<1
<1
<1
<1 <1
CYPRA- ZINE TOTAL (UG/L)
7
<3
10
10
104
METHO-MYL TOTAL (UG/L)
<2.0
PROME-TONE TOTAL (UG/L)
5.3
DATE
FEB09. . .
MAY20...
AUG08...
PROME- PRO-TRYNE PAZINETOTAL TOTAL(UG/L) (UG/L)
PROPHAM TOTAL (UG/L)
<2.0
SEVIN,TOTAL(UG/L)
<2.0
SIMA- SIME-ZINE TONE
TOTAL TOTAL(UG/L) (UG/L)
.70
SIME- TRYNE TOTAL (UG/L)
-113-
(_>
i _i _i _i O Cl Cj i^ ..l CJ _J CJ Ci O l_^ C'
<J- <j J- o o u "» <> <» ov > o ir ir <> > » «» t» !» v/i v.', K> » o o o { ^j I.M »-» » »_»_»_. i .1 o-sj --,, -si ~vj -sj Ln t.,1 v./"' W V-T V/ W' V-"1 4" £" -V ^" ^ U! -* ~>J r1, X1 f * ' °4> W" L*J ^ V.^ t ~) ~>J W^ VI \Ji ^ * ' O
o i> O- u- u «./- O- () > u O 1.1 O O u i> LT >ji oi wi ui Ji l^rvj »-»-»-» <>j *- »-* » » O ( J rD (_j c_, c.j r. i. j c j c o o c_ c, o c. < j i_j c- O o CJ -*j ^o c« t- » c ' r -*l u- cv. r. 01 * vji u; <u-i i^- ~«j t -o i/j
*- o o o o o cj o cj o o o o o cj cj o o cj o o o o o o *^ o -o o nj r\j ui ui -g ^j ^ cj CD o
C. O I.' O (_- CJ CJ CJ C (_« C- C> C) C, O O O LJ C-. O CJ Cj O l_> f_> C C_> C- O O C_) O O O l_i C, CJ O ti
r\j rv> tx, -» «-»-»->-»-»-»-»-» C_, O O C: O C' O O O CJ Cj Ci CJ C, O O O O C' O O C LJ C> O C./ O O O H.) 0) -N! ^1 -f- 04 I\J ru -» C) vO -vl 0 a v/i ^ c>J fXJ ro -» O O O (O O O O O O O O O O C -vj O u O o >J CX ^J 0" -^ Cfi en » -M *> G UJ VJi O (X- C- * xO O * * ^ c>. CAI C>i IX, t\.) ' » O
1 1 1 1 1
1
11 1 1
11 1 1 »
1 (J'
\1 1
1
1 l/-<
1 l/>
1 1 1
1
1 1
1 1 1
1
1
1 1
11
1111 1
1
1 11
1
11
1
1
1
1
1
1 1 f 1
1 .
1 1
1 1 10II
t/>
1
1 1
1
1 1
11t- 1n
o (
(11
1 11 1
1 1 1 1 1
1 1 11
1 1 1 1 1
1 11 1 1 1 o
f'
c,->
III
J^
LI
u<
rn
>J1
11
1 1
1 1 1 1 1 1 1 1 1 1 1
1 11 11
1 1
2. o nAJ 1-
m c
n
c
^
Xc
c.1 -1
f.t-lr~r
1-
O"
Cl
r.71
rn7-
J>
o J-,*.
_L
1- r~N
Xt-C"
t/1
oAJ .2
CJ p
;x I*-<.
CJN
-o (>- I_M
1 t- < o o
\ ~^.
C1
CA< o
a t>
(.-1(II
c> o
J Ui s1
08158930 WILLIAMSON CREEK AT MANCHACA ROAD, AUSTIN, TEX. (Flood-hydrograph partial-record gage)
LOCATION.--Lat SO^S'ie", long 97°47 I 36", Travis County, on downstream side of bridge on Manchaca Road, 0.7 mi south of the intersection of Ben White Boulevard and Manchaca Road, and 4.9 mi southwest of the State Capitol Building in Austin.
DRAINAGE AREA. 19.0 mi 2 .
PERIOD OF RECORD. August 1975 to current year. Periodic measurements only, May to August 1975.
GAGE. Digital water-stage recorder and crest-stage gage. Datum of gage is 618.39 ft NGVD.
REMARKS. Records fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 8,490 ft3 /s June 11, 1981 (gage height, 16.00 ft).
EXTREMES FOR CURRENT YEAR.--Maximum discharge, 1,670 ft3 /s Aug. 8 (gage height, 7.25 ft).
-115-
-911-
I I / CM C- V.
O CJ c > CJ C.' t> » C . c O C . -c C" 4 L/i » CJ C.. Ui c. O C IX
Cj O '!' cj
|i O O- O O Cr .J ij (. > >> (.>II -J -N| ^J O U O! C/' U 1.J- C1 V/:
» -i » O t. i_; Cj O C.J O C1 Cl CJ UJ
C ' O C.j 4 < C.-' (\- U" Cj U^ 4~ M C C-)
'_) '"J O
O O <_J
O IIM II
11 II
O II JU II
O O O Cl ci CJ C / O CJ CD O
i./i en <-i v/i ciien wi en wi c/i t- 4'- * -
ui O- O i\J -» O-
f\J » V" cn O
M O O CJ O O O O O O CJ O O CJ O CD O CJ O 11 O O O O OJ en «- O O ~>J O r ) C" CO ->4 ^J r J -» o o--
M o o Ci rj oO o o C' c> o o c, r_> o 00000000000000000 o o o o
-» C' o c; c- o o o o r o o ci c- o r.. o o L o o c; c o o c;. o c. o c o o o « j o o o c oO *i O O Co 0< -vj ->J a c/i c»i » OJ i\J I\J » -* O O CT' O C) O O O O CJ O O O i_> C- CJ O O O CJ CJ CJ » vo a (\, o O o i/J ^J iv. v- c.. 4.- c. ~>( CH >t; o c/' 4> o. c-. i\ i\j rj ro r\j r\. » » » Cj CJ C1 O c. o O
JU t-r_ o
II II II IIII V
1 f r j > » C C .< «./ o i c- C*. ^J * ) ~-J -xj -NI ^g o tr -c.
I O (_ C.' C., C C.' c.! <*>> en <J CJ C_ CJ U> C (_ er O C' CM IN. 1 O
1 1
II II II II
1
1
1 1 1
1 O O O Cj C) C' <_> O CJ C- Cr -O O" O » * » W C.4 f\JII II II
1
1
1 t_ CJ O »_' I .» CJ Cj CJ C_i CJ CJ C.) C-' HJ O O CJ O CJ O 1 1 1
1
1 1 1 1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1
111
1 1
II
II II II
1 1 1
1 1
11
1
1
1 1 1 1
I oj en u> O rv o o ^ >) » < " * -O vn rvi o. c/1 O en -si
i o o o o o o o o o o o n o o C) o o o o o 1
1 1 1 C: O O C. O CJ O O O O CJ O O O O C., O CJ C; O
I cj Cj *o *o tX1 Ct- -xi o- c^ wi f~ oJ oJ r*-j f*o ~* ci/ c_>
1
1 o
1 J. 1 1
e-
1 -1 1 t-l < ^z 1 1"
1
1 1 1
1 1
i i; I
1 1 1 1 1 1 1 1
1 1 1 1 1 1 i rv I
1 ^S tI oo I 1 1 1 1 1 1 1 1
1 1
2 1
1
1 O
I m 1 1
1 a11 C.1 1 z 1
1 m 1
1 1 1 1 1 1 1 1 1 1 1 1
1 1
1 11 11 1 1 11 11 1 I 1
1 11 1 1 1
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1
1
1 ! 1 "O I
1 t i II: i.
1 "D 1 1 I 1
1 1 11 C')
1
1
11 }1 C
1 Z C1 1 I n1 1
jrr- 1
I-
1 1o
;*,
1
r>
o!=
1-0
c
z:\ iin
X
0
t-
oN
Co
^ oi r-
-i V;
J
C.I
G>ni
I 0: o > c: i 3:
n
COLORADO RIVER BASIN
08158970 WILLIAMSON CREEK AT JIMMY CLAY ROAD, AUiTlN, TX
LOCATION.--Lat 30 e 11'21", long 97 e 43'56", Travis County, Hydrologic Unit 12090205, at Jimmy Clay Road, 0.5 mi south east of the intersection of Jimmy Clay and Nuckles Crossing Roads, and 5.9 mi south of the State Capitol in Austin.
DRAINAGE AREA.--27.6 mi2.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD. November 1974 to September 1975 (periodic discharge measurements only), September 1975 to current year.
GAGE.--Water-stage recorder. Datum of gage is 493.88 ft (revised) National Geodetic Vertical Datum ot 1929 (city of Austin bench mark). Prior to Oct. 1, 1982, at datum 3.30 ft higher.
REMARKS.--Water-discharge records good. No known regulation or diversion in watershed. There are three recording rain gages located in the watershed. The station is part of a hydrologic research project to study the rainfall- runoff relationships for the Austin urban-rural areas.
AVERAGE DISCHARGE. 8 years, 9.09 ft 3 /s (4.47 in/yr) , 6,590 acre-ft/yr.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 14,100 ft 3 /s Ju'ne 11, 1981 (gsge height, 20.55 ft, revised), present datum; minimum daily, 0.03 ft 3 /s Sept. 16, 24, 1977.
EXTREMES OUTSIDE PERIOD OF RECORD.--The maximum flood since 1869 occurred on Sept. 9 or 10, 1921, stage and discharge not determined.
EXTREMES FOR CURRENT YEAR.--Peak discharges above base of 500 ft 3 /s and miximum (*):
Date Time Discharge Gage height (ft 3 /s) (ft)
May 20 1630 May 21 1030 600
8.328.25
Minimunm daily discharge, 0.55 ft 3 /s on Nov. 22.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983MEAN VALUES
DAY OCT NOV DEC JAN FEE MAR APR MAY JUN JUL AUG SEP
12345
6789
10
1112131415
1617181920
2122232425
262728293031
TOTALMEANMAXKINCFSKIN.AC-FT
CAL YRWTR YR
1.61.21 .31 .01 .2
1.21 .51.3.79
1 .5
.71
.89
.66
.56
.64
1.31 .31 .31 .62.1
2.42.42.2.87.89
1.31 .51 .1.77.74.81
38.631 .252.4.56.05.0577
1982 TOTAL1983 TOTAL
.691.36.41 .1.85
.74
.74
.80
.81
.81
.86
.85
.94
.931 .0
1.21 .21.31 .41.3
1 .1.55.76
1 .41 .4
34152.31 .51.4
84.632.82
34.55.10.11168
1378.5221 73.56
1 .51.34.42.21 .8
1 .71 .71 .81 .62.1
5.53.52.32.12.1
1 .81 .92.02.02.0
2.11 .91 .61.51 .6
1 .74.44.03.02.93.3
73.32.365.51.3.09.10145
MEANMEAN
264.63.42.72.1
2.01 .81.82.32.5
2.22.01 .92.02.0
2.12.19.5
1 14.9
6.93.52.52.32.0
2.02.02.12.22.12.1
118.63.83
261 .8.14.16235
3.785.95
2.02.12.42.7
29
3.11 .71 .5
294.3
2.41.91 .91.9
18
5.62.81 .91 .72.5
2.31.92.01 .81 .9
1.61 .61.8_-_...---
133.34.76
291 .5.17.18264
MAX 613MAX 134
2.23.53.6
306.1
5.05.04.84.22.9
2.52.01 .51.54.2
385.23.23.07.5
3.62.9
998.25.6
637.76.75.3
125.9
355.811 .5
991 .5.42.48706
KIN .22MIN .55
4.64.34.24.34.0
3.73.33.43.22.7
2.62.32.32.11 .9
2.12.01 .61 .91.9
1 .91.81 .61 .61 .6
1 .51 .51.41 .51 .5---
74.32.484.61 .4.09.10147
CFSK .14CFSM .22
1 .51 .92.32.21.2
1.72.02.53.03.3
833.82.53.18.4
4.74.0
105.7
122
134179.78.07.1
6.76.35.95.34.95.0
478.715.41341 .2.56.65950
IN 1IN 2
5.44.94.95.0
76
261 15.45.04.5
4.95.35.05.26.1
309.45.34.54.4
3.93.94.95.08.5
9.25.24.ff4.54.3-» -
282.49.41
763.9.34.38560
.86 AC-FT
.93 AC-FT
4.02.83.33.23.5
2.72.72.42.52.5
2.72.83.3
198.6
133.92.12.12.2
2.22.52.32.11 .9
2.12.22.52.72.52.4
114.73.70
191 .9.13.15228
27304310
2.42.61 .62.02.4
2.92.7
75186.3
4.03.63.12.93.0
2.72.53.46.92.9
2.42.12.12.12.4
2.82.82.92.92.92.8
179. 15.78
751 .6.21.24355
2.72.82.93.03.1
2.73.33.23.23.4
3.43.23.23.33.3
3.13.0
598212
9.43.83.02.82.6
2.42.62.62.62.5---
240.18.00
822.4.29.32476
-118-
COLORADO RIVER BASIN
08158970 WILLIAMSON CREEK AT JIMMY CLAY ROAD, AUSTIN, XX Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD. Chenical, biochemical, and pesticide analyses: January 1975 to current year. Radiochemical analy ses: October 1979 to September 1980.
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB09...
MAR02...
MAY11...
STREAM- FLOW, INSTAN-
TIME TANEOUS (CFS)
1255
0815
1205
82
2.4
17
SPE CIFIC CON DUCT ANCE
OXYGEN, OXYGEN COLI-
347
658
302
PH(STAND- TEMPER- ARD ATURE
(UMHOS) UNITS) (DEC C)
7.1
7.6
7.7
12.0
17.0
21.5
COLOR (PLAT INUM- COBALT UNITS)
25
5
10
TUR BID ITY
(NTU)
90
1.4
250
OXYGEN,DIS
SOLVED (MG/L)
9.5
5.1
7.6
DIS- DEMAND, SOLVED BIO- (PER- CHEM
ICAL, 5 DAY
CENT SATUR ATION)
91
54
88
3.6
3.6
4.8
FORM, FECAL. 0.7 UM-MF
(COLS./
STREP TOCOCCIFECAL,
KF AGAR (COLS. PER
(MG/L) 100 ML) 100 ML)
12000 86000
K42000 3500
37000 210000
DATE
FEB09...
MAR02...
MAY11...
HARD NESS (MG/L AS CAC03)
160
270
140
HARD NESS,
NONCAR- BONATE (MG/L CAC03)
27
41
29
CALCIUM DIS- SOLVED (MG/L AS CA)
55
90
49
MAGNE SIUM, SODIUM, DIS- DIS SOLVED SOLVED (MG/L (MG/L AS MG) AS NA)
4.6
11
4.0
9.3
33
10
SODIUMAD
SORP TION
RATIO
POTAS- ALKA- SIUM. LINITY
FIELD (MG/L
DIS SOLVED (MG/L AS K)
.3 1.9
.9 3.0
.4 4.0
AS
130
230
110
SULFATE DIS SOLVED (MG/L
CAC03) AS S04)
30
51
28
CHLO RIDE, DIS SOLVED (MG/L AS CL)
15
44
16
FLUO- RIDE, DIS
SOLVED (MG/L AS F)
.20
.40
.30
SILICA, DIS SOLVED (MG/L AS SI02)
4.9
5.3
7.6
DATE
FEB09...
MAR02...
MAY
SOLIDS, SOLIDS,SUM OF RESIDUECONSTI- AT 105TUENTS, DEC. C,
DIS- SUS-SOLVED PENDED(MG/L) (MG/L)
199
376
185
124
1
236
SOLIDS, VOLA TILE, SUS
PENDED (MG/L)
44
78
NITRO GEN,
NITRATE TOTAL (MG/L AS N)
NITRO GEN,
NITRITE TOTAL (MG/L AS N)
NITRO GEN,
N02+N03 TOTAL (MG/L AS N)
.27 .030 .30
.50 .200 .70
.43 .170 .60
NITRO GEN,
AMMONIA TOTAL (MG/L AS N)
NITRO GEN,
ORGANIC TOTAL (MG/L AS N)
.070 1.2
.660 1.1
1.10 1.0
NITRO GEN, AM MONIA + PHOS- CARBON, ORGANIC PHORUS, ORGANIC TOTAL TOTAL TOTAL (MG/L (MG/L (MG/L AS N) AS P) AS C)
1.30 .280 6.3
1.80 .240 3.5
2.10 .590 13
DATE
FEB09...
MAR02...
MAY
TIME
1255
0815
ARSENIC BARIUM,DIS- DIS
SOLVED SOLVED (UG/L AS BA)
(UG/L AS AS)
48
100
CADMIUMDIS
SOLVED (UG/L AS CD)
CHRO MIUM, DIS SOLVED (UG/L AS CR)
10
COPPER, DIS SOLVED (UG/L AS CU)
IRON, DIS
SOLVED (UG/L AS FE)
18
<3
-119-
COLORADO RIVER BASIN
08158970 WILLIAMSON CREEK AT JIMMY CLAY ROAD, AUSTIN, TX Continued
WATER QUALITY DATA, WATER YEAR OCTOBER 1982 TO SEPTEMBER 1983
DATE
FEB09...
MAR02...
MAY11...
LEAD,DISSOLVED(UG/L AS PB)
MANGANESE,DIS
SOLVED(UG/L AS MN)
MERCURYDISSOLVED(UG/L AS HG)
SELENIUM,DISSOLVED(UG/L AS SE)
SILVER,DISSOLVED(UG/L AS AG)
ZINC,DIS
SOLVED(UG/L AS ZN)
<3
27
100
50
<3
<3
8
DATE
FEB 09...
TIME
1255
AME-TRYNETOTAL
ATRA- TONE TOTAL (UG/L)
ATRA- CYAN-ZINE, AZINETOTAL TOTAL(UG/L) (UG/L)
CYPRA- ZINE TOTAL (UG/L)
METHO- PROME-MYL TONE
TOTAL TOTAL(UG/L) (UG/L)
<2.0 .2
PROME- PRO-TRYNE PAZINE PROPHAM SEVIN,TOTAL TOTAL TOTAL TOTAL
DATE (UG/L) (UG/L) (UG/L) (UG/L)
FEB 09... <.1 <.10 <2.0 <2.0
SIMA- SIME- SIME-ZINE TONE TRYNE
TOTAL TOTAL TOTAL(UG/L) (UG/L) (UG/L)
-120-
STA. NJ.Cil 5* 97u
STDSM RAlNrALL
A.\J
Sj'-iOF- RECORD
1935
*IAT
5=>
YEAR
« I LL I
A '
! S C
J C
-x z c N
AT
J I M M
1C CLAY
K 0 A 3 /
A J 5 T
I fj
, TEXAS
S T Q A M
0 =
M A
f 2 0
/ 1 9 o
5
' OATc
_ TIME
|--- ------ --- ----------
a G
| 1*"!5
| 2WMS
| 5WMS
HAY 23
|
|G u 0 u
| u
. 3
| 0
. J
3 J
1 3
| 0
. C 3
0030
| 0.10
0115
|
J . 1
1C
1 3 u
| G
. 1
13240
i U.11
j^5:
i
0.11
0533
i c.
iiC 5
1 u
i 0.11
0550
i ;.
111133
| 0.12
1523
| 0.27
153^
I 0
. 5
v.U 3 5
| 0.75
13*0
| C.
3v*
1400
i 1.05
1-1_
1 1.15
1 *1
5 I
1 .29
1 <» 2 0
| 1
. 5 c
1-ou
| 1.61
1 i i 5
| 1
. 6
<«1 5 G L
| 1
. 6 4
1315
| 1.65
152.
, j
1.65
1525
| 1 .0
51530
i 1.65
1535
| 1.65
1 j4
u |
1 . o5
15*5
| 1
. i-
51c 30
| 1.65
1o1
5 |
1 .t
t1 6
5 C
| 1
. o 7
1 3=0
| 1.67
1 73u
| 1 ,c
71713
j 1
. o 7
1 7
3 C
| 1
. t 7
17*0
I 1..-7
r*
~\
J
J t
i
0.2C
0.20
0 . 20
0 . 2 Q
u . 2 3
0.20
3.23
3.20
:.,?5
:.3t
>3
. H'3
3.55
0. i
2 3.39
1 .10
1.13
1 .13
1 .1C
1 .1d
1 .14
1 .1e
1.16
1.16
1 .1 c
1 ,1o
1 .1
71 .1 7
1.17
1 .2
01.21
i . 2
i1.25
1 .31
1 .31
G . 0
0.05
0.3d
0.09
C. J*
0.09
0.0?
C . G
)0.09
C.Oy
C.1 5
0.27
0.44
0.35
1 .10
1.15
1 .2*
1 .VJ
1 .51
1 .5
a1 .63
1 .50
1.0 0
1 .6
31 .6
01
. o3
1 .0
31 .0
31 .60
1 .oO
1 . 03
1 .60
1 .6j
E N
J M
3
1.0J
|
1 .6 j
|
1 . fc
U |
1 .32
' 1.63
|"i7^-j
i 1
. 6 7
1
. 3 o
j 1
. o
j |
1 75
u |
1 .c
7
| 1.55
I 1
. i>j
|
c 3 - --- - _____ ___ -
I I
I I
I I
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 i
1 1
1 1
i 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
i 1
1 1
J 1
1 1
1 1
1 I
i 1
i 1
i 1
1 1
i i
1 1
1 1
1 1
i 1
1 1
1 1
1 1
ACCOM.
| DISCHARGE
XEIJHTrC
I IN
PRcCI
3.
| IN.
| C p S
10
. C
| 4.7
0.35
| 4.7
3.1-1
6.0
0.15)
5.5
.j .
1 5
| 11.3
0.15
| 23.0
0.15J
_ ». 3
3.15
| ^3.3
0.151
24.0
G .
1 5
| 25.0
0.21
| ?.
50.51
| 3.1
0.44
| d.2
0.67
| 3.
70.95
| 9.
1D
. "
9 |
1 C
. 0
1 .1 3
| 11.3
1 .24
I 11.0
1.31
| 1 7
. C
1.35
| L3.0
1 .3o
| 95
. C
1.39
| 2u5.0
1.40
| 2 a 5
. 0
1.40
| 339.0
1 .4j
j 393.0
1 .O
j 44o.O
1.40
| 437.3
1.40
| 5 2 9
. C
1.4J
| 570.3
1 .43
| 593.0
1 .
«. 2
| o
1 2
. 0
1.43
| 617. C
1 .44
J 637.3
1.45|
61 3.0
1.4.
| 593.0
1.43
| 593.0
1.45
| 550.0
1.50
| 574.0
1.51
| 516.0
A C C U M
. R U N 0 F r
IN.
O.o 030
0.0001
0.0003
0.0004
O.OC09
0.0030
0 . 004 6
0 . 0 0 4
S0.0051
3.0096
0.0115
0.0119
0.0120
0 . G
1 2 0
J . Q
1 2
10.0123
0.0123
0.0124
0.0125
0 . u
1 2 b
0.0142
0.0170
0.0197
0.0213
0.0231
0.0252
0 . G 2 7
50.0300
0.0353
0.0437
0.0523
0.3610
0.0695
0.0750
0 . j 3 o
+0.0953
0.0974
0.1001
0.1023
-221-
< Cf Oc.j .r u.O wi C
CJ CJ O C i
O- vO -» Ifi I' O- -sj C-^ O OJ Ui O' * Ci C~l CO -»
O C) CO O O O O O CJ O O CJ O O O O O
O O O O O O O O O O O O
O o ui ui uiUI CcJ -si 4- C
TABLE 3 AUSTIN URBAN HYDROLOGY STUDY
DAILY & MONTHLY RAINFALL SUMMARY FOR GAGES NORTH OF THE COLORADO RIVER PERIOD: 1983 WATER YEAR
GAGE NUMBERDATE
1BUL : 2BUL : 1SHL : 2SHL : 1BOG : 1WLN : 2WLN : 3WLN : 4WLN : 5WLN
OCT4
267
9101112131422282930
MTOT
0.080.001.300.080.150.150.000.120.340.010.010.070.000.000.00
2.31
0.090.010.470.080.180.260.020.160.260.020.020.010.040.010.00
1.63
0.040.000.270.200.070.410.110.220.500.000.000.030.930.010.09
2.88
0.140.010.450.390.040.380.070.170.420.000.000.050.720.010.09
2.94
0.030.000.290.390.360.030.470.190.400.000.000.140.400.010.00
2.71
0.030.000.200.120.050.400.010.200.360.010.000.040.630.000.01
2.06
0.020.000.170.320.310.320.090.180.460.010.000.080.890.010.00
2.86
*0.030.00*0.20*0.48*0.34*0.05*0.26*0.13*0.200.000.000.020.490.010.00
2.21
0.040.000.130.130.380.170.190.160.390.000.000.021.020.010.01
2.65
0.040.000.250.580.420.060.310.160.250.000.000.100.660.010.00
2.84
NOV12s\
491011121316181920212223242526272829
MTOT
0.001.770.070.000.010.050.010.000.000.010.000.070.010.000.000.060.260.071.990.110.010.00
4.50
0.011.900.080.000.000.030.020.000.000.010.000.22
*0.010.000.00*0.05*0.21*0.06*1.62*0.09*0.010.00
4.32
0.001.910.000.000.000.080.080.000.000.030.000.160.000.010.000.090.090.131.560.180.000.00
4.32
0.001.420.030.000.000.060.000.010.010.020.000.110.000.000.010.080.040.071.600.160.020.00
3.64
0.000.990.030.000.000.050.100.010.000.030.000.070.010.000.000.280.150.131.270.170.010.00
3.30
0.002.200.110.010.000.060.000.020.010.030.020.160.010.010.050.21
*0.12*0.17*1.30*0.170.000.00
4.66
0.001.680.050.000.000.020.030.000.000.030.010.130.000.000.000.060.140.191.490.190.000.00
4.02
0.000.770.040.010.000.010.030.030.000.020.000.060.010.000.000.220.070.211.440.180.010.00
3.11
0.001.020.050.000.000.050.040.010.000.040.000.100.000.010.000.370.070.181.480.180.010.00
3.61
0.000.870.030.000.000.050.060.070.000.030.000.080.000.020.000.170.120.191.260.180.010.01
3.15
MTOT = Monthly totals-123-
TABLE 3 AUSTIN URBAN HYDROLOGY STUDY
DAILY & MONTHLY RAINFALL SUMMARY FOR GAGES NORTH OF THE COLORADO RIVER PERIOD: 1983 WATER YEAR
nflTF
DECoQ
Q
1011131620262731
MTOT
CTOT
JAN 135679171819202122233031
MTOT
GAGE NUMBER
1BUL
0.300.170.010.240.260.000.000.010.070.550.37
1.98
34.25========
0.580.000.010.000.000.000.000.640.160.100.260.010.000.000.13
1.89
2BUL : 1SHL : 2SHL : 1BOG : 1WLN : 2WLN : 3WLN : 4WLN : 5WLN
*0.25*0.140.000.250.230.020.000.000.000.520.21
1.62
28.38= = = = = = = = :
0.600.010.020.010.010.000.000.63*0.19*0.12*0.31*0.010.000.000.00
1.91
0.060.190.000.400.290.000.000.000.120.470.17
1.70
32.21:========
0.640.000.000.000.000.000.010.690.350.050.260.000.010.000.06
2.07
0.020.230.000.350.320.000.010.000.200.47
*0.17
1.77
31.15: = = = = = = = = :
*0.650.000.000.010.000.000.010.750.28
*0.03*0.210.00*0.020.00
*0.03
1.99
0.260.390.000.420.210.000.000.000.170.540.14
2.13
26.26
0.670.010.000.000.000.010.000.740.290.030.200.000.000.000.05
2.00
*0.25*0.370.000.390.270.010.000.000.300.560.21
2.36
32.40
0.710.010.010.020.000.000.000.770.270.070.310.010.010.000.07
2.26
0.290.430.000.280.240.000.000.00
*0.27*0.50*0.19
2.20
31.74;========:
0.710.010.010.010.000.000.020.820.200.07'0.270.020.000.000.02
2.16
0.240.110.000.400.340.010.000.000.170.620.15
2.04
28.78
0.790.000.010.020.000.000.000.720.200.030.220.000.000.00
, 0.00
1.99
0.130.440.000.430.370.000.000.00
*0.17*0.61*0.15
2.30
31.88; = = = = = ===:
*0.770.000.010.010.000.010.000.75
*0.23*0.04*0.250.000.000.000.00
2.07
0.300.330.000.360.320.000.000.00
*0.16*0.58*0.14
2.19
28.82:=========
*0.740.000.010.000.000.000.000.790.180.030.200.000.020.000.03
2.00
MTOT = Monthly totals CTOT = Calendar year totals
* «* Estimated
-124-
TABLE 3 AUSTIN URBAN HYDROLOGY STUDY
DAILY & MONTHLY RAINFALL SUMMARY FOR GAGES NORTH OF THE COLORADO RIVER PERIOD:1983 WATER YEAR
DATE
FEB45689141516171819202122
GAGE NUMBERtM»MWMM»MMMWMMM«
1BOG : 1WLN1BUL
0.310.960.000.010.790.010.740.000.000.000.010.290.010.01
2BUL
0.250.490.010.020.860.010.790.010.000.000.000.290.000.01
1SHL
0.26 0.29 0.00 0.01 0.88 0.13 0.70 0.00 0.00 0.00 0.00
*0.16 0.00 0.00
2SHL
0.220.330.010.000.870.000.800.010.000.000.000.130.020.00
0.230.900.000.000.810.000.820.010.000.000.000.060.010.01
*0.26*0.49 0.00
*0.01*1.00 0.00
*1.03 0.00
*0.01 0.00 0.00
*0.18 0.00
*0.02
2WLN
0.220.320.010.00
*0.92 0.00
*0.94 0.00
*0.01 0.00 0.00
*0.16 0.00
*0.03
3WLN
0.241.350.000.000.780.000.880.000.000.060.020.000.000.00
4WLN
0.210.390.000.010.800.000.820.000.010.000.000.140.000.02
5WLN
0.220.820.000.000.720.000.910.010.000.000.000.070.000.01
MTOT 3.14 2.74 2.43 2.39 2.85 3.00 2.61 3.33 2.40 2.76
MAR 1345891516181920212223252630
: = = = = :
MTOT
APR 4121320212229
0.000.011.330.000.090.350.710.390.000.600.060.000.010.640.000.680.24
5.11
0.010.010.000.020.040.010.04
0.010.000.720.010.050.330.570.480.000.200.050.010.000.890.010.740.24
4.31
0.010.010.060.000.040.040.01
0.000.000.00
*0.54 0.00
*0.36*0.69*0.58 0.00
*0.24*0.06*0.01 0.00
*1.08*0.01*0.90*0.29
4.76
0.000.010.010.020.040.010.03
0.000.000.560.00*0.03 0.40
*1.03*0.78 0.00
*0.36*0.10 0.00 0.00
*1.40*0.01*0.27 0.24
5.18
0.00*0.01 0.00 0.00
*0.06 0.00 0.01
0.000.000.850.000.060.351.190.680.000.210.160.000.001.170.010.840.23
5.75
0.000.010.010.030.090.000.01
0.000.000.730.000.000.36
*0.85*0.43 0.00
*0.65*0.06 0.00
*0.01*0.82*0.01*0.72*0.09
4.73
0.00 0.00 0.58 0.00 0.03 0.20 1.45 0.44 0.00 0.70 0.06 0.00 0.01 0.88 0.01 0:77 0.10
5.23
0.010.000.740.000.050.341.060.800.000.290.120.000.011.44
*0.01*0.87*0.27
6.01
0.00 0.00 0.63 0.00 0.05 0.35 1.08 0.63 0.01 0.29 0.08 0.00 0.00 1.41 0.01 0.55
*0.33
5.42
0.000.000.680.000.030.391.010.770.000.360.100.000.001.370.010.540.23
5.49
0.010.020.00
*0.01*0.06*0.01 0.02
0.00 0.02 0.02 0.00 0.08 0.01
*0.02
0.00*0.01*0.02 0.00
*0.05*0.01 0.00
0.000.020.000.040.080.000.01
0.020.010.000.070.080.000.00
~MTO? ^^^MTOT = Monthly totals -125-
TABLE 3 AUSTIN URBAN HYDROLOGY STUDY
DAILY & MONTHLY RAINFALL SUMMARY FOR GAGES NORTH OF THE COLORADO RIVER PERIOD: 1983 WATER YEAR
: GAGE NUMBERDATE _ - _____ _
: 1BUL
MAYio91011141516171819202131
MTOT
0.000.010.000.760.200.010.290.000.010.100.491.601.270.22
4.96
2BUL : 1SHL : 2SHL : 1BOG : 1WLN : 2WLN : 3WLN : 4WLN : 5WLN
0.010.020.001.31
*0.17*0.01*0.240.00
*0.01*0.08*0.41*1.33*1.060.18
4.83
0.000.030.001.780.130.000.340.000.050.340.101.500.890.11
5.27
0.000.040.001.950.390.030.260.00
*0.04*0.30*0.09*1.33*0.790.11
5.33
0.000.06
*0.02*1.75*0.660.00
*0.470.00
*0.09*0.19*0.01*1.48*0.700.12
5.55
0.000.040.001.860.160.000.320.000.050.580.401.991.060.41
6.87
0.00*0.040.00
*1.86*0.160.00
*0.320.00
*0.05*0.58*0.40*1.99*1.060.21
6.67
0.000.080.012.240.790.00
*0.610.00
*0.12*0.26*0.01*1.950.920.13
7.12
0.000.040.001.980.770.000.370.020.040.730.041.200.900.13
6.22
0.000.080.022.060.780.000.550.000.110.230.011.740.820.12
6.52
JUNE145671415161718192324252628
MTOT
0.011.120.521.410.000.290.011.250.000.000.000.000.000.180.000.07
4.86
0.00*1.12*0.52*1.410.00
*0.29*0.01*1.250.000.000.000.000.000.460.010.13
5.20
0.00*1.07*0.48*0.73*0.01*1.11*0.02*0.440.000.000.000.000.001.010.000.09
4.96
0.001.070.480.730.011.110.020.440.000.000.000.120.011.650.010.01
5.66
0.001.500.430.590.010.250.000.400.000.010.000.040.020.770.000.00
4.02
0.011.330.561.740.020.530.030.340.040.000.000.000.000.240.010.12
4.97
0.000.970.581.500.021.590.010.710.020.000.000.000.000.220.000.10
5.72
0.001.050.550.770.020.630.010.390.010.000.000.320.320.300.000.11
4.48
0.002.250.480.780.000.780.010.370.000.000.010.150.211.470.010.01
6.53
0.001.310.550.730.010.500.010.370.010.000.000.100.460.360.000.06
4.47
MTOT = Monthly totals
-126-
-zzi-
S[e^o^ AIIHUOW = ioiw
OZ'£=========
OO'OOO'OOO'O
6KI OO'OOO'OZO'Oro'oOU'OTO'O6£'TOO'O
OKO OO'O9£'0OO'O
ws========= 90'0
OO'OTO'OZ8'TOO'OOO'O90'090*0OO'OTO'O8Z*TTO'O
WO OO'OT6'0OO'O
frZ £=========
OO'OOO'OTO'O
ZKT OO'OOO'OZT'O
KTO TO'OZO'O86'TTO'OZT'OOO'OTO'OOO'O
ZT'9=========
TO'OOO'OOO'O
fr6"Z TO'OTO'O9Z'0OO'OOO'O?o*oSB'I00*0OO'OOO'O90'TTO'O
Z8'9=========
OO'OOO'OOO'O
9T'Z* OO'O
TO'O*ZO'O*OO'O
TO'O*ocro6^7' 2oo'dOO'O
TO'O*£T'T*OO'O
9Z'£=========
frO'O TO'OOO'O09'TOO'OOO'O
ZO'O*£0'0*OO'O
TO'O*6£'T*OO'O
Ofr'O* OO'O
9£'0*OO'O
96'£=========
OO'OOO'OOO'O£T'TOO'OOO'OOO'OTO'OTO'O£0'0Z8*TOO'OOO'OOO'O06*0OO'O
H'9=========
OO'OOO'OOO'O
Zfr'T OO'OTO'OZO'OOO'OOO'OTO'O
6KZOO'OOO'OTO'O£T'TOO'O
8Z'9=========
OO'OOO'O
TO'O*ZT'T*TO'O*OO'OOO'OOO'OOO'OZT'O98'ZOO'OOO'OZO'OH'TOO'O
£Z *fr=========
OO'OOO'OOO'OZT'TTO'OOO'OTO'OOO'OOO'OZT'O
ZKTOO'OOO'OZO'O
9KT ZO'O
iOiW=======
8Z9ZOZ6T8T£TZTTTOT
68Z99fr£
9nv£9'Z
OO'OOO'OOO'OOO'O£8'o09'090'TZO'OOO'OTO'OZO'OOO'O
9T'£=========
OO'OOO'OOO'OTO'OOO'T£9'0£9'TTO'OOO'OTO'OZO'O90*0
6Z'T=========
OO'OOO'O90*0OO'O69'0££'0
frZ'O ZO'OOO'OTO'O90*0OO'O
----:---
OO'OOO'OOO'OOO'O90'TST'OZ£'TOO'OOO'OOO'OH'OOO'O
68'Z=========
OO'OOO'OOO'OZO'O££*T69'099*0OO'OOO'OOO'O6Z'0OO'O
""6Z7z"
OO'OOO'OTO'OOO'O90'T
oro Z8*0£0'0OO'OTO'O60'0ZO'O
ZO'T
OO'OOO'OOO'OOO'OOO'O
TKO H'OOO'OOO'OOO'OZT'OOO'O
H'Z
OO'OOO'OOO'OOO'O90'T
9KO 09'0OO'OOO'OOO'O£T'0OO'O
69'Z
OO'OTO'OTO'OOO'OZ6*0
Ofr'OZfr'OOO'OOO'O£0'098'0OO'O
TO'fr
TO'O90*0TO'OTO'O9£'T
frfr'O SZ'OTO'O60'0TO'O
frZ'T OO'O
101W=======
OZ6T8TZT9T9TH£TTT
99T
AW================================================================================================
N1M9 : N1M7 : N1M£ : N1MZ : N1MT ' 909T 1HSZ : 1HST IfiaZ : 109T :
N39WDN 39V9 :
NV3A U31VM £86T:aoiH3d N3Aiy oavyoioo 3Hi do HJ.NON S39V9 NOd ANVWWRS TIVJNIVH AIHINOW « Aiiva
Aanis A90~iONaAH Nvayn Niisnv £ 3igvi
I I > ro CO
^.
-S 1
1
o o
II II
IIm
s: 3
</>
o» o
r+ r*
3
-
<T>
r+^
*
=*"
Oi
'
r*<
<
<<
CD
n>O
. Q»
r*
*S
r+
Q»0
O»
(/)
ll II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II It II II II II II II II II II II II II II II II II II II II II II II II II II II
II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II
S O -1 -F»
0 O
CO
CO -vj
10 <£>
-F*
o -P*
en CO cr>
00
-»J
CO -»J
IO
-»J
-F»
-F*
CO
CO
-F*
-F» ro
10 CO <£>
-F*
-F»
-F*
CO ro i
CO
IO C
O -»J
II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II
3E 1
O 1
ro <£5
1 >
CO ro <i> -F» cr>
cr> ro 10
ro ro <£
5cr> -F
*
en 00
CO ~^l
en CO en CO
CO o CT>
CO en
-F»
ll H
CO
nco
i-'O
W3
0o
cr>
en
^i-"O
-o
H I
H n H II O
OO
OO
OO
OO
OO
OO
Oii
ooi-'e
n^ooooooro
cocT
io
n ooo-»
j-F
aooro
oi-
l--J
cn
cn
o
n n n n *
* *
*II
OO
OO
i-'O
OO
OO
OO
OO
ii ooow
aoooooorococT
iO
n 0
1 o
'-'ro
oo
oo
i-'v
o-.jco
o
n n n ii n ooorooooooooooo
n o
oo
ro
oo
oo
oo
ovo
o^t-
1II
OO
O--JC
r>
OO
OO
i-'O
OC
OO
i-'
II II II II O
OO
i-'i-'O
OO
OO
OO
OO
II O
OO
OO
OO
CO
OC
Oi-'O
OO
ii i-'O
i-'O
'>cn
i-'o
cr>
oi-'O
OO
i-'
n n n n II O
OO
i-'i-'O
OO
OO
OO
OO
II O
OO
'-'l-'O
OO
OO
CO
Ol-'O
II
OO
OC
O-p
aO
OO
'irO
CO
l-'O
CO
^O
II II II II *
* *
* *
* ii oooroooooooi-'o
oo
ii o
oo
ro
cT
ioo
oo
oro
oro
ro
II O
OO
-^Ji-'O
OO
OO
-^li-'i-'i-'
II II II II II O
OO
i-'O
OO
OO
Oi-'O
OO
ii o
oo
crie
no
oo
oo
i-'i-'O
i-'
n oi-'-F
»--
Jcr>
ooi-'O
i-'c
r>coi-'O
n n n 11 II
OO
Oi-'O
OO
OO
OO
OO
O
ii oooocooocooi-'c
nooo
n ooro
cn-F
*oi '-F
aro
i 'i-
'--J
Ocr>
n n n n II
OO
OO
OO
OO
OO
OO
OO
II O
Oi-'^
O-^JO
OO
OO
OO
OO
i-'
ii o o
-F»
ro
cr> o
i '
i i-'-v
jen
vo
co
-vj
n n n n II O
OO
i-'O
OO
OO
OO
OO
O
ii o
oo
roo
oo
o-F
ao
ocT
ii-'o
i-'
ii ooooooooooro
ooocyio
ro
n n
n n t
n n t
n n n n i->
n c=
n i
n n n n n ro
n c=
n i
n n n n II
!-
n :E
n i
n n n n n ro
II
CO
n :r
n
i
n n n u II
!-
II O
n en
n n n n n
!-
n i
II Z
n n n n n ro
n i
II Z
n n n n II C
On
s:
n i
n -z
. n n n n II
-F^
n r-
u
z
n n n n n en
n r-
II Z
n n
13 H
TI
O
3>
0
m c:
2
00
50
o 3>
i i
|
-< Qo
2 O z rn i 50 3> Z -n 3> CO c:
2 50
-< ~n
o 50
O 3>
O
m z
o 1
:c o i
z o 0 I o 50
3>
0 0 50
i i
< 5O T3 m 50 o I
1
00
O
J i 1 m 50 -<
m > 70
^
P m
u> 3> CO -1 z
c:
50
1 -<
0
50
O 8 -< CO 1
c:
o
n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n u u u u n
-631-
: ee'fr :ZT'fr: ee'fr : 2z*e: 69'fr: O6'fr: eS'fr :ee'fr : se'fr :================================================================
: TO'O :: TO'O :: 9T'0 :: Z6*T :: ZO'O :: 0^*0 :: O'O :: OO'O :: TO'O :: frT'O :: TO'O :: 30'0 :: 30*0 :: ; vo :: 2o 0 :: O'O :: TO'O :: 3T*0 :: TO'T ::
: fre'e :
: OO'O :: OO'O :: TO'O :: ero :: OO'O :: eT'O :: TO'O :: e9'0 :: 22*0 :: e3'0 :: 9T'0 :: 33'0 :: Ofr'O :: frT'O :: TO'O :: 9fr"0 :
: SWMe :
:
: HV3A
OO'Oeo'oLl'Q
frZ'T60'033*09e*o*TO'OTO'OeT'OTO'O30'090'0SO'OOT'OOO'OOO'O
frT'OTO'T
08'3
OO'O
frO'OOO'OTe*oOO'OTT'O
frO'Oefr'o 03'0
9fr'0 oe'oeo'o93*09T'08e*oOT'O
SWM3
H31VM
: OO'O : OO'O: TO'O : TO'O: frT'O : ZT'O: 96'T : T9'T: 80*0 : 90*0: ee'O : 33'0: Ofr'O : frT'O: OO'O : TO'O: OO'O : OO'O: Z2*0 : 60'0: TO'O : TO'O: 30*0 : eO'O: OO'O : TO'O: 60*0 : 60*0: Oe'O : SO'O: OO'O : OO'O: OO'O : OO'O: 60*0 : 9T'0: e3'T : frO'T
: 69*e : 00*3
: OO'O : OO'O: TO'O : eO'O: OO'O : TO'O: ZT'T : Z3'0: OO'O : OO'O: 90*0 : e3*0: OO'O : TO'O 39 *0* : 6e *0: 33'0*: ZT'O: e3'0*: Ofr'O: 9T'0*: ST'O: 33'0*: frO'O: Ofr'O*: eO'O: frT'O*: gi'o: TO'O*: OO'O: 9fr'0*: SO'O
: SWMT : S99T
e86T :QOIH3d
: OO'O: TO'O: 9T'0: T6'T: 90'0: 03*0: oe'o: 30*0: OO'O: fre'O: TO'O: 30*0: TO'O: OT'O: Z3'0: OO'O: OO'O: frT'O: 9T'T
nrr: TO'O: OO'O: TO'O: frO'O: OO'O: 60*0: 30*0: Ze'O: 93*0: 93*0: 3T'0: 63'0: ST'O: T9'0: OO'O: 60'0
: V1S2
: OO'O: 30*0: eT'O: 38'T: SO'O fr9*0: eo'o: OO'O: TO'O: 3T"0: TO'O: frO'O: OO'O: frT'O: frfr'O: TO'O: OO'O: frT'O: Z3'T
"IT'T
OO'O: OO'O: TO'O: se*o: OO'O: 63*0: 30*0: T9*0: T3*0: ze*o: OT'O: 3T*0: fr9'0: Tfr'O: OO'O: ZT'O
: VIST
y3Aiy
: OO'O :: TO'O ': frT'O :: 98'T :: SO'O :: frfr'O :: 9fr'0 :: TO'O ': OO'O :: 03'0 :: TO'O :: frO'O :: OO'O :: TO'O :: 3T*0 :: OO'O :: OO'O :: 6T*0 :: Z3*T :
: £3*3 :
: 00*0 :: OO'O :: TO'O :: TO'O :: OO'O :: 60 '0*:: 30'0*:: e9*0*:: oe*o*:: U*0*:: eT*0*:: 03'0*=: 30*0*:: frO'O*:: OO'O :: ZT'O :
TyaiiT
XI
oavaoioo
OO'O : OO'O :30*0 : TO'O :frT'O : TT'O :98'T : T9*T :frO'O : 90*0 :63'0 : T9'0 'efr'O : TT'O :OO'O : OO'O :OO'O : OO'O :OO'O : OO'O :OO'O : OO'O :30*0 : OO'O :60*0 : ZO'O :00*0 : TO'O :T3'0 : Tfr'O :00*0 : TO'O :OO'O : OO'O :frT'O : eT'O :9T'T : 9e*T '
O3'fr : e9'fr :
OO'O : OO'O :OO'O * 00*0 :TO'O : OO'O :9T'0 : fr9'0 :OO'O : OO'O :90'0*: 90*0 :30"0*: 30*0 :fr9*0*: 39*0 :T3*0*: 03'0 :ze'o*: 9e*o :9T'0*: 9T'0 *frT'O*: eT'O :68'0*: 98*0 :frfr'T*: 6e*T :00*0 : 00*0 :33*0*: T3'0 :
^383 : H38T :
aWRN 39V9
3H1 dO HinOS
: AQOIS ADOIOHQAH NV8Hn
98*fr: 00'9 :ee'fr :03*fr : 99*fr :Ofr*9 : 101W====== ======8=============== ======== ============
00*000*003*06Z'Teo'o09'0Te'oTO'O00*0eT'oOO'O90*0OO'OTO'OZ3*0TO'OOO'O9T'03e*T
86'T
OO'OOO'OTO'OZO'OOO'OSO'O30*0
9fr*0 93*009*0TT'OZT'O30*0eo*o00*0ZT*0
~NO:2~~
S39V9
: 00*0 :: OO'O :* 00*0 :: 6fr*T :: e3*0 :: Tfr'O ': TO'O :: OO'O :: 30*0 :: 3T*0 :: TO'O :: 30*0 :: 60'0 :: OO'O :: fr2"T :: OO'O :: OO'O :: 9T'0 :: T3'T :
:"n:e":
: OO'O :: OO'O :: OO'O :: OO'O :: OO'O :: SO'O :: TO'O :: 39*0 :: ST'O :: eT'O :: ST'O :: 33*0 :: 3fr*T :: 83'0 :: OO'O :: 3T'0 :
: NO-T :
00*0 :30*0 *T3*0 :98*T :90*0 :83*0 :Ofr'O :TO'O :TO'O :eT'O :OO'O =eo*o :30*0 :ero :90*0 :00*0 '00*0 :9T*0*:90*T*:
"zfrT:
00*0 :frO'O :00*0 :3e*0 :00*0 :3T*0 :eo*o :ze*o :ZT*0 :se*o :93*0 :eo*o :T3*0 :frT'O :3e'0 :80*0 :
108T :
TO'O : 00*0 :00*0 : TO'O :OT'O : 9T'0 '99 *T : 00*3 :frO'O : eO'O :3e*0*: Ofr'O :OO'O : eO'O :00*0 : 00*0 :00*0 : TO'O :9T*0 : frT'O :OO'O : TO'O :30*0 : 00*0 :30*0 : OT'O :OO'O : TO'O :6e*0 : 82*0 'TO'O : 00*0 :00*0 * 00*0 :frO'O : 90*0 :efr*T : ee*T :
T9'3 : 8e*e :==============00*0 : 00*0 :OO'O : 00*0 :00*0 : TO'O :00*0 : T8*0 :OO'O : TO'O :90*0 : frO'O :TO'O*: TO'O :9e'0*: T9*0 :ST'O*: 92*0 :SO'O : 60'0 :frT'O : 2e*0 :frO'O : 2T*0 :2fr'0 : fr9*0 :6T*T : fre*0 :00*0 : 00*0 :ero : eT*o *
avae : ava2 :
HOd ANVWWflS IIVdNIVH A1H1NOW
Niisnv
OO'O : 62OO'O : 82eT'O : LZfrT'2 9260*0 92ze*o fr2eo'o e2OO'O T2OO'O 0290*0 6TTO'O L\OO'O 9TOO'O 2TTO'O TT98'0 OT00*0 6OO'O 9TT'O e09'T 2
AON
frZ*2 101W====== ======00*0 Te00*0 oe00*0 62TO'O 82OO'O 92eT'O 22TO'O £Tee*o 2T02'0 TTeo'o OTTT'O 602*0 892*0 Lfre*T 900*0 2LO'O I
130
31VQ
QNV A1IVQ
^ 319V1
-oei-j.013 101W
;
:::;;;;:j;;:::::j
6L'l
eo'oOO'OOO'O20'092'0OT'O6T'099'0OO'OOO'OOO'OTO'OTO'OOO'O20*0OO'O69'0
* T9'2
: TT'O: OO'O: TO'O eo'o' LZ'O 60'Q OV'O' 98'0: OO'O' OO'O' OO'O: TO'O: TO'O' OO'O: TO'O: TO'O: 08*0
: £2*2
: OO'O ' OO'O* OO'O: TO'O' VZ'O: 2T'0: 82'0 ZL'O OO'O* OO'O: OO'O: OO'O: OO'O ' TO'O* OO'O: £9'0* T2'0
V9'l
Zl'O OO'O ' TO'O: TO'O* 92'0* 60'0: T£'0: T8'0* TO'O* OO'O: TO'O' OO'O' OO'O OO'O' OO'O OO'O* TO'O
: I£'2
: 90*0: OO'O: TO'O: TO'O: 92'0: 2T'0: 6£*0: WO * OO'O: OO'O: OO'O* OO'O: OO'O: OO'O* OO'O: OO'O: WO
: 66'T
* 8T'0* 00*0' OO'O ' TO'O* Z2*0* 2T'0 wo ' £9'0* 00*0* 00*0* 00*0: 00*0* 00*0* 00*0* 00*0* 00*0* 1?9*0
* 9e*2 :
' 0*0 : 00*0 :* TO'O :* TO'O ** 82*0 ** 90*0 ': CC'O :: 96*0 :' OO'O ** 00*0 :* 00*0 '' TO'O :* 00*0 :: 00*0 :' TO'O : 00*0 ': Z9"0 :
LL'l ' 28'T :
60*0 * 22*0 'OO'OTO'OTO'Oe2'0OT'O
WO L6'0OO'OOO'OOO'OOO'OTO'OOO'OTT'OOO'OOO'O
' OO'O :* 00*0 :* TO'O :* 22'0 :' 60*0 *' Ll'O ' 29'0 :* 00*0 *: 00*0 ** 00*0 :* OO'O :' OO'O :' OO'O :' OO'O '' OO'O ': 69 '0 '
T '2 ' U'l : 82*2 : 9Z'T : Ll'l ' IZ'Z
ZO'O ' 90*0 : WO ' Zl'Q ' ZO'O LO'OOO'O ' OO'O ' TO'O ' OO'O ' OO'O ' OO'OOO'O ' 20'0 : 20*0 ' OO'O -' OO'O ' OO'OTO'O ' OO'O ' OO'O : TO'O : TO'O ' TO'O62*0 ' Z2'0 ' WO : 92'0 : T2'0 ' 92'090*0 ' 90*0 ' OT'O ' T'0 ' 90'0 : Vl'O92'0 : 6T'0 ' 9 '0 : 2T'0 ' 02'0 ' 92*096*0 : 61?'0 : 2Z'0 ' 99'0 : 99'0 ' 89*0oo'o oo'o ' oo'o eo'o 00*0 TO'OOO'O ' OO'O : OO'O ' TO'O ' OO'O ' OO'OOO'O : OO'O ' OO'O ' OO'O : OO'O : OO'OTO'O ' OO'O : OO'O ' TO'O ' OO'O ' OO'OOO'O : OO'O ' OO'O : OO'O : OO'O : OO'OOO'O : OO'O : OO'O : OO'O : TO'O : OO'OTO'O : OO'O : OO'O ' OO'O ' OO'O ' OO'OOO'O ' OO'O : OO'O ' OO'O ' OO'O : Z9'0OZ'O ' 29*0 ' 08*0 : T9'0 : OT'O ' Ofr'O
101W=======
1CvZ£222T2026T8TLIOT
L991? 2T
NVP================================================================================================================
:
;::;:: *:' ' -;: :;:
======
T2'0OO'OOO'O89'02T'0OO'OOO'OOO'OOO'OOO'OOO'Olv'0
817*0 TO'OOO'OOO'O
9Z"0*08*0* OO'O
======= : T£'2
: T2*0 ' OO'O: OO'O: WO: WO' OO'O OO'O OO'O' OO'O TO'O: OO'O: 62'0* 99'0: OO'O: OO'O* OO'O' lv'0' 9T'0: OO'O
: LO ZZ> £T LZ- WbZ- 6V VI- VI bt- IS l£- 99 0£:
: 92'2 ' LL'Z ' 29'2
: OO'O: OO'O* LZ'O' 6£*0 OO'O OO'O' OO'O: OO'O: OO'O' TO'O: OO'O* 8£'0: 9v'0' OO'O: OO'O* OO'O: 9£*0: 8£*0: OO'O
* 28'0: OT'O: OO'O: OO'O: 89 '0: 20'0* TO'O* OO'O' OO'O* OO'O: OO'O* 9Z'0
: 6KO * TO'O* OO'O: OO'O 9£'0: CI'O: OO'O
: Ze'2: Te-e :20'2' T6'T :
I.B £<{ <5l 6<5- by LZ- 19 82- frb IC: 09 62
OS'2 : 96'T : 86'T : 68'T vl'Z ' 6£'T= 1= = ;= = =;=;=; = =;=; = . =;=; .;= = == = =;=;=;=;...... = ....... ..... = = = . = . = ;= = = ;= = ;^;= = = ;z = = ;= = = :=:=:=:==:=:=:=
: frZ'O : 62'0 * H'O : 00*0 ' S2'0 : ST'O * 6e*0 ' 6T'0 : 8 '0 * 9T*0 ' 00*0 * OO'O* 09'0' 80*0: 90*0: OO'O: OO'O: OO'O: OO'O: OO'O: TO'O: 92'0: 6V'0 TO'O: 90'0: OO'O 9e*o' ZC'O: OO'O
: OO'O: U'O' 60'0: 00*0' OO'O* 00*0* TO'O* 00*0: TO'O: OO'O: ZC'O: Sfr'O* 20'0: OO'O: OO'O' 90'0: fr *0* 00*0
: OO'O :' 66'0 :: 29*0*:: 90'0*:' OO'O '' OO'O :' OO'O :' OO'O '- OO'O ' ' TO'O :: £2*0 : 29*0 :* 20'0 :: OO'O :* 00*0 :* TT'O :' 69'0 :: OO'O '
==================================================SWM£: SWM2: SWMT: S98T: V1S2: VIST: Hail :
OO'OOO'O09'090'0OO'OOO'O00*0OO'OOO'OOO'OOO'OOV'OOO'OTO'OTO'O92'069'0OO'O
: OO'O ': OO'O :' 09'0 :' 90'0 :' OO'O '' OO'O :' OO'O :' OO'O : ' OO'O :: TO'O :: 92'0 :' frfr'O :' 20'0 :' OO'O ' ' OO'O :' TO'O :' 62'0 :' OO'O '
OO'O ' TO'O : OO'O ' OO'O ' OO'O : OO'OOO'O : OO'O ' OO'O ' OO'O ' OO'O ' OO'OZ9'0 = 29'0 : 29'0 ' T9'0 ' Z9'0 ' Z9'090'0 : LO'O : LO'O ' 90*0 ' eO'O : 90'0OO'O : OO'O ' OO'O ' OO'O : OO'O : OO'OOO'O = OO'O : OO'O : OO'O ' OO'O ' OO'OOO'O ' OO'O : OO'O ' OO'O ' OO'O ' OO'OOO'O ' OO'O : OO'O ' TO'O : OO'O : OO'OTO'O ' TO'O : 20*0 : OO'O : OO'O ' OO'OOO'O ' OO'O ' OO'O ' OO'O : OO'O = TO'O92*0 : 62*0 : 0£"0 : 22*0 : v£'0 Z£'0WO : 9e'0 : 19*0 : 0£'0 : Lv'O - 2 '0eo'o : wo oo'o eo*o 00*0 woOO'O : OO'O ' OO'O ' OO'O ' OO'O : OO'O00*0 : 00*0 : 00*0 * 00*0 : 00*0 : 00*020*0 : 0*0 : e *0 : WO - 92*0 ' 20*099*0 ' ST'O * frO'O ' 2'0 ' 22*0 * 90*0OO'O * 00*0 : 00*0 TO'O * OO'O * 00*0
========================================================H382' y38T :
Kl r\^7 * kir\«»T * TOOT " \JWQf* * \IWG*7 * \IWdTNU C NU L lUa L a vac * a Vac * dual
H38WnN 39V9
W3A M31VM£86T:aOia3dH3AIHoavyoio3 3Hixanis A9010H(
do Hinos]AH wvayn
1013=======
101W=======
ieoe82LZ9292T202nei2TTTOT
69VC2T
330======
31VQ
S39V9 yod xyvwwns nvdNivn AIHINOW QNV nivaNllSnV *r 3H9V1
-m-
===============================================================: Z£'t7 :========: TO'O :: TT'O :: 8KO*:: ZO'O*:: K'T*:: Z0'0*:: OO'O :: TT'O*:: frO'O :: OO'O :: 9Z'0 :: Z9'0 :: OO'O :: 00>r) :: OO'O :: H'0 :: ZO'O :: TO'O :: 9Z'0 :: OO'O :: OO'O ::
TT'9s====s
OO'OTZ'O06'0ZT'O8Z'TTO'OOO'O
eroero TO'O96'0eg'oOO'OOO'OOO'OZT'OZO'OOO'O09'TOO'OOO'O
: 96't7:======
: OO'O: ero: 8KO: ZO'O: fce'T: ZO'O: OO'O: TT'O: 80*0: OO'O: Z8'0: 99'0: OO'O: OO'O: OO'O: 9T'0: ZO'O: OO'O: OZ'T: £0'0: OO'O
: gg-g: 9T'9==============
: OO'O: 69'0: Ofr'O: £0'0: Z9'T: £0'0: OO'O: ZT'O: ZZ'O: OO'O: 08*0: 89'0: OO'O: OO'O: OO'O: ero: TO'O: OO'O: TT'T: TO'O: OO'O
============================: 99'Z :t?e*e: Z£'Z: we
: OO'O: 89'0: £fc"0: TO'O: 6£'T: TO'O: OO'O: TT'O: 6T'0: OO'O: ZZ'O: T9'0: TO'O: 90*0: OO'O: OT'O: OO'O: TO'O: TO'T: ZO'O: OO'O
======: T9'Z
: 9Z"fc========
: OO'O: frT'O: 88'0: TO'O: TT'T: 20'0: OO'O: 80*0: frO'O: OO'O: TZ'O: OZ'O: OO'O: OO'O: OO'O: ZT'O: OO'O: OO'O: £6'0: TO'O: OO'O
========: WZ
: Tfr'9 :=========
: OO'O :: ZZ'T :' 09'0 :: OO'O :: ZT'T*:: £0'0*:: TO'O*:: ZT'O*:: ZT'O*:: OO'O :: ZZ'O*:: 69*0*:: OO'O :: OO'O :: TO'O :: Z0*0*:: TO'O*:: OO'O*:: 9Z'T*:: ZO'O*:: TO'O*:
========: Z9"Z :
00'9==== =
OO'OZZ'O0£*0ZO'OZ£'TZO'OOO'OOT'O60*0OO'O9Z'099'0OO'OOO'OOO'O60*0OO'OOO'O0£'T£0*0OO'O
=====K'Z
: 06'* :=========
: TO'O :: ZZ'O :: ZZ'O :: TO'O :: ZT'T :: TO'O :: OO'O :: 60*0 :: 60*0 :: OO'O :: T9'0 :: ZZ'O :: OO'O :: OO'O :: OO'O :: ZO'O :: OO'O :: OO'O :: 8T'T :: OO'O :: OO'O :
=========: 6fr'Z :
================================================================: OO'O :: TO'O*:: OO'O :: Oe'O*:: OO'O :: OO'O :: OO'O :: OO'O :: ZZ'O :: OO'O :: 06*0 :: OO'O :: OO'O :: TO'O :: 8£'0 :: 6Z'0 :: 00*0 ::=========: SWM£ :
OO'OOO'OOO'O8T'0TO'OOO'OOO'OZO'O
frS'O OO'O
frS'O OO'OOO'OOO'O80'T9Z'0TO'O
: OO'O: TO'O: OO'O: ZZ'O: OO'O: OO'O: OO'O: OO'O: £8'0: OO'O: 69'0: TO'O: OO'O: OO'O: Ofr'O: TZ'O: OO'O
: OO'O: OO'O: OO'O: ST'O: TO'O: OO'O: OO'O: OO'O: 98'0: TO'O: Z8'0: TO'O: OO'O: OO'O: Z8'0: ez'o: OO'O
: OO'O: OO'O: OO'O: frZ'O: OO'O: OO'O: OO'O: OO'O: 6Z'0: OO'O: 9Z'0: TO'O: OO'O: TO'O: 89'0: ZZ'O: TO'O
: OO'O: TO'O: TO'O: 9£'0: OO'O: OO'O: OO'O: OO'O: 68*0: OO'O: frZ'O: TO'O: TO'O: OO'O: 6Z'0: Z£'0: OO'O
: OO'O :: OO'O :: OO'O :: 9T'0 :: OO'O :: OO'O :: OO'O :: TO'O :: 98'0 :: OO'O :: £9*0 :: TO'O :: OO'O :: OO'O :: TZ'O :: ZT'O :: 20*0 :
TO'OOO'OTO'OOZ'OOO'OOO'OOO'OTO'O98*0OO'O69'0TO'OOO'OOO'O8£'0ZT'OOO'O
: OO'O :: OO'O :: ZO'O :: £Z*0 :: OO'O :: OO'O :: OO'O :: OO'O :: ZO'T :: OO'O :: 09'0 :: TO'O :: OO'O :: OO'O :: Ze'O :: 6Z'0 :: OO'O :
WZ : ZT'9 : H'9 * TO'* : Z0'9 *ZO'fr=========================================
OO'O : OO'O : TO'O : OO'O * OO'O :96'T : 0£'0 : 6T'0 : 80'0 : ZZ'O :99'0 : ZKO : 8Z'0*: T8'0 : ZZ'O *OO'O : 90*0 : 9T'0*: TO'O ' OO'O '6Z'T : 06*0 : TT'T*: 99*0 : OZ'T '£0'0 : TO'O : TO'O*: TO'O ' OO'O *TO'O : OO'O : OO'O : OO'O * OO'O *£T'0 : 60*0 : TT'O*: 90*0*: 90*0 :£T'0 : TO'O : TT'O*: frO'O*: TZ'O :OO'O : TO'O : TO'O*: OO'O ' OO'O '6Z'0 : 99'0 ' £8*0*: Zfr'O*: Z9'0 :99*0 : 9fc*0 : fc9*0*: 8fc*0*: T9*0 :OO'O : OO'O : OO'O : OO'O ' OO'O 'OO'O : OO'O : OO'O : OO'O ' OO'O 'TO'O : TO'O : OO'O : OO'O ' OO'O '80*0 : OT'O : £e*0*: OT*0*: OZ'O :TO'O : OO'O : ZO'O*: QO'O : 90'0 'OO'O : OO'O : TO'O ' OO'O ' OO'O :8£'T : 9T'Z : ZZ'T * Z£'T*= 86*0 :ZO'O : TO'O : TO'O : OO'O : OO'O :TO'O : OO'O : OO'O : OO'O : OO'O :
===================================£fr'Z : W2 : 8T'£ ' 86'Z : TZ'Z :
OO'OZZ'O£8*0TO'O99'0TO'OOO'O90*0
WO OO'O
erosro OO'OOO'OOO'OOT'OOO'O00*08Z*TOO'O00*0
======86*Z
=========================================OO'O : OO'O : OO'O : OO'O : OO'O :TO'O : ZO'O : OO'O ' ZO'O*: OO'O 'OO'O : OO'O : OO'O : ZO'O*: QO'O :9T'0 : 62'0 : eT'O : 02'0*: ST'O :OO'O : OO'O : OO'O : OO'O : TO'O :OO'O : TO'O : OO'O : OO'O : OO'O 'OO'O : OO'O : TO'O : OO'O : OO'O 'OO'O : ZO'O : TO'O : TO'O*: 00'0 '£8*0 : WI : 98*0 : Z6'0*: 99*0 :TO'O : 90*0 : OO'O : 00*0 : TO'O :WO : ZZ'O : 06*0 * WO : £Z*0 :00*0 : 00*0 : TO'O ' OO'O * TO'O :OO'O : OO'O : OO'O : 00*0 ' 00*0 'OO'O : OO'O : TO'O : OO'O : OO'O :TZ'O : ZZ'O : 96'0 ' T9'0 : Z£'0 *8T*0 : 9£*0 : T£*0 * T£*0 : 6Z*0 *00*0 : 00*0 : 00*0 * 00*0 : 00*0 :
00*0ZO'OZO'OZT'OOO'OOO'O00*0TO'OOO'TOO'OT6'0OO'OOO'OOO'OZ9'08Z'0OO'O
:======= ======================================================= ==================================
SWMZ: SWMT: S99T: V1SZ: VIST: H91T :H39Z: H39T :NO-Z : NO-T : "I09T : HV9£ : HV9Z :HV9T
: H39WPN 39V9
: W3AN31VM£86T =QOIM3dM3AIHoavaoio:) 3HiJO HIPOS
: AOniS A9010HQAH NV9Hn
QTIWI MfN xxwwuinc "HW-IKITWX xni-iiKinui ojjvj QU3 AQvnnllo 1 IV3IMlvQ A inJ.IMUn
Niisnv
101W=======
T£0£9Z9Z£ZZZTZOZ6T8T9T9TK£TOT
689fc£Z
HVW======
101W======
£ZZZTZOZ6T8TZT9T9TK
68Z99fcT
93J==ass=
3iva
QNV A1IVO
*> 319V1
=================================================================================================================
TABLE 4 AUSTIN URBAN HYDROLOGY STUDY
DAILY AND MONTHLY RAINFALL SUMMARY FOR GAGES SOUTH OF THE COLORADO
DATE
======APR4121320212229
======MTOT======MAY123891011121415161718192021272831
======:
MTOT========
RIVER PERIOD: 1983
':
WATER YEAR :
GAGE NUMBER :
1BAR :=======
0.00 :0.01 :0.00 :0.00 :0.02 :0.00 :0.00 :
2BAR=====
0.000.010.010.000.040.000.03
: 3BAR : 1BOL : 1-ON : 2-ON : 1BER : 2BER : 1LBR : 1SLA : 2SLA : 1BGS : 1WMS : 2WMS : 3WMS :=============================================================================================
: 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.00 :: 0.00 : 0.00 : 0.05 : 0.00 : 0.02 : 0.02 : 0.02 :: 0.01 : 0.04 : 0.01 : 0.00 : 0.02 : 0.00 : 0.01 :: 0.00 : 0.02 : 0.00 : 0.01 : 0.01 : 0.03 : 0.02 :: 0.03 : 0.08 : 0.07 : 0.09 : 0.07 : 0.07 : 0.09 :: 0.02 : 0.02 : 0.00 : 0.00 : 0.00 : 0.01 : 0.00 :: 0.00 : 0.00 : 0.00 : 0.04 : 0.03 : 0.04 : 0.05 :
===============================================================0.03 :
=======
0.00 :0.00 :0.05 :0.00 :0.00 :0.73 :0.39 :0.00 :0.03 :0.21 :0.00 :0.00 :0.02 :0.34 :1.74 :0.84 :0.00 :0.00 :0.04 :
0.09=====
0.000.000.050.191.480.050.000.000.230.000.010.650.341.670.370.000.000.000.06
: 0.06 : 0.16 : 0.13 : 0.14 : 0.15 : 0.17 : 0.19 :===================================================
: 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.00 :: 0.00 : 0.00 : 0.00 : 0.01 : 0.00 : 0.01 : 0.00 :: 0.03 : 0.06 : 0.04 : 0.07 : 0.04 : 0.03 : 0.05 :: 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.00 ::*0.07 : 0.19 : 0.00 : 0.00 : 0.05 : 0.01 : 0.01 ::*0.50 : 2.34 : 0.76 : 3.06 : 0.90 : 1.63 : 2.81 :: 0.00 : 0.05 : 0.04 : 0.03 : 0.02 : 0.03 : 0.02 :: 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.02 : 0.00 ::*0.22 : 0.00 : 0.00 : 0.00 : 0.03 : 0.00 : 0.00 ::*0.05 : 0.44 : 0.41 : 0.72 : 0.45 : 0.38 : 0.57 :: 0.00 : 0.01 : 0.00 : 0.00 : 0.00 : 0.00 : 0.00 :: 0.00 : 0.00 : 0.00 : 0.00 : 0.02 : 0.01 : 0.02 :: 0.00 : 0.26 : 0.12 : 0.50 : 0.13 : 0.20 : 0.47 ::*0.41 : 0.20 : 0.11 : 0.01 : 0.26 : 0.34 : 0.46 ::*1.73 : 1.80 : 1.57 : 0.08 : 1.52 : 1.61 :*0.07 ::*0.96 : 1.21 : 1.09 : 2.41 : 0.92 : 0.84 :*2.34 :: 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.00 :: 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.00 : 0.01 :: 0.00 : 0.05 : 0.10 : 0.05 : 0.07 : 0.10 : 0.07 :
0.010.020.010.010.080.010.04
=====0.18
=====
0.010.000.040.000.070.940.240.000.070.380.000.040.170.151.511.080.000.010.04
: 0.00: 0.02: 0.00: 0.01: 0.10: 0.01: 0.05
========: 0.19
========
: 0.00: 0.00: 0.05: 0.00: 0.00: 1.45: 0.06: 0.00: 0.00: 0.36: 0.00: 0.00: 0.18: 0.05: 1.96: 0.99: 0.02: 0.00: 0.07
: 0.02: 0.03: 0.08:*0.03:*0.11:*0.01: 0.01======: 0.29======
: 0.00: 0.00: 0.02: 0.00: 0.01: 2.55: 0.05: 0.00: 0.00: 0.46: 0.00: 0.01: 0.30: 0.06: 1.71: 1.22: 0.00: 0.00: 0.05
==================================================================================4.39 :
=======
5.10 : 3.97 : 6.61 : 4.24 : 6.94 : 4.41 : 5.21 : 6.90 : 4.75 : 5.19 : 6.44
: 0.00: 0.02: 0.00: 0.03: 0.08: 0.00: 0.04
::: ;
:
0.030.040.060.030.110.010.03
: 0.01: 0.02: 0.02: 0.02: 0.08: 0.01: 0.04
:
:::j:
=======================: 0.17
========
: 0.00: 0.00: 0.02: 0.00: 0.15: 1.27: 0.56: 0.00: 0.01: 0.41: 0.00: 0.01: 0.63: 0.06: 1.67: 1.00: 0.03: 0.00: 0.04
t=
::;:
::* ::::;
;:;:
0.31=====
0.000.000.040.000.252.780.090.000.000.490.000.020.250.041.901.410.000.240.05
: 0.20========
: 0.00: 0.00:*0.01: 0.00:*0.10:*0.83:*0.36: 0.00: 0.00: 0.29: 0.00: 0.02: 0.67: 0.30: 1.60: 0.82: 0.00: 0.00: 0.07
:= : ::::;::;^;::
j;::
=======================: 5.86 : 7.56
=====: 5.07
========;
MTOT - Monthly totals
-132-
TABLE 4
DAILY AND
DATE
JUNE1234567121415161718232425272830
=======MTOT
======= JULY156711121314151617181920212628
MTOT
MONTHLY RAINFALL SUMMARY FOR
1BAR : 2BAR : 3BARSSSSSS =========^=^=
0.010.000.000.740.771.140.000.011.010.000.250.000.000.000.000.310.000.000.00
: 0.01: 0.00: 0.00: 0.82: 0.62: 0.60: 0.01: 0.00: 0.78: 0.02: 0.39: 0.01: 0.00: 0.00: 0.00: 0.46: 0.23: 0.17: 0.00
: 0.00: 0.00: 0.00:*0.08:*1.20:*0.90: 0.00: 0.00:*3.68:*0.23: 0.00: 0.00: 0.00: 0.00: 0.00: 0.29: 0.00: 0.00: 0.00
: 1BOL
AUSTIN
GAGES
: 1-ON : 2-ON
: 0.00: 0.01: 0.00: 0.86: 0.64: 1.00: 0.02: 0.00: 0.48: 0.02: 0.77: 0.02: 0.00: 0.00: 0.00: 0.34: 0.00: 0.00: 0.00
: 0.02: 0.00: 0.01: 0.30: 0.35: 0.81: 0.00: 0.02: 2.27: 0.01: 0.52: 0.03: 0.00: 0.00: 0.00: 0.40: 0.00: 0.00: 0.00
: 0.01: 0.00: 0.00: 0.13: 0.72: 0.64: 0.03: 0.00: 0.86: 0.02: 1.30: 0.01: 0.01: 0.00: 0.00: 0.32: 0.00: 0.00: 0.00
URBAN HYDROLOGY STUDY i
SOUTH OF
GAGE
THE COLORADO RIVER PERIOD: 1983 WATER YEAR :
NUMBER :
: 1BER : 2BER : 1LBR : 1SLA : 2SLA : 1BGS : 1WMS : 2WMS : 3WMS :
: 0.01 :: 0.00 :: 0.00 :: 0.86 :: 0.22 :: 0.69 :: 0.01 :: 0.00 :: 1.59 :: 0.00 :: 0.25 :: 0.01 :: 0.00 :: 0.00 :: 0.00 :: 0.21 :: 0.00 :: 0.00 :: 0.02 :
0.01 :0.00 :0.00 :1.04 :0.39 :0.75 :0.03 :0.00 :0.55 :0.01 :0.16 :0.00 :0.00 :0.00 :0.00 :0.00 :0.00 :0.00 :0.00 :
0.01 :0.00 :0.00 :1.08 :0.39 :0.66 :0.01 :0.00 :0.60 :0.06 :1.29 :0.01 :0.02 :0.00 :0.00 :0.35 :0.00 :0.00 :0.01 :
0.00 :0.01 :0.00 :0.51 :0.56 :0.77 :0.00 :0.00 :1.27 :0.01 :0.61 :0.00 :0.00 :0.00 :0.00 :0.21 :0.00 :0.00 :0.00 :
0.010.000.001.150.420.790.020.000.290.010.450.020.000.000.000.280.000.000.00
: 0.00: 0.00: 0.00: 1.45: 0.33: 0.86: 0.00: 0.00: 0.17: 0.02: 0.84: 0.00: 0.00: 0.08: 0.01: 0.78: 0.00: 0.00: 0.00
: 0.00: 0.00: 0.00: 1.13: 0.64: 0.67: 0.01: 0.00: 0.59: 0.01: 0.48: 0.02: 0.00: 0.00: 0.00: 0.20: 0.00: 0.00: 0.00
==========================================================================================
4.24 : 4.12 : 6.38~SSSSSS = = = = = = = = ==: = = = =
0.031.500.030.000.000.000.100.310.410.510.480.030.000.000.000.000.00
: 0.03: 1.30: 0.01: 0.00: 0.00: 0.00:*0.19:*0.63:*0.80:*0.97:*0.95:*0.06: 0.00: 0.00: 0.00: 0.00: 0.00
: 0.02: 1.36: 0.02: 0.00: 0.01: 0.00: 0.09: 0.29: 0.37: 0.45: 0.44: 0.03: 0.00: 0.00: 0.00: 0.00: 0.00
: 4.16=======
: 0.00: 0.11: 0.01: 0.00: 0.00: 0.04: 0.04: 1.06: 0.48: 0.67: 0.08: 0.17: 0.00: 0.00: 0.00: 0.00: 0.00
: 4.74
: 0.17: 1.35: 0.11: 0.00: 0.00: 0.19: 0.49: 0.66: 0.34: 1.17: 0.28: 0.00: 0.00: 0.00: 0.00: 0.00: 0.00
: 4.05
: 0.00: 0.14: 0.00: 0.00: 0.00: 0.39: 0.02: 0.27: 0.02: 0.02: 0.70: 0.14: 0.04: 0.03: 0.02: 0.00: 0.00
: 3.87 :
: 0.04 :: 0.05 :: 0.06 :: 0.00 :: 0.00 :: 0.26 :: 0.81 :: 0.53 :: 0.56 :: 0.87 :: 0.71 :: 0.07 :: 0.00 :: 0.00 :: 0.00 :: 0.01 :: 0.00 :
2.94 :======
0.06 :0.10 :0.05 :0.01 :0.00 :0.38 :0.98 :1.38 :0.26 :0.91 :0.10 :0.05 :0.00 :0.00 :0.00 :0.00 :0.00 :
4.49 :
0.01 :0.14 :0.00 :0.00 :0.00 :0.77 :0.30 :0.96 :0.46 :1.14 :0.49 :0.00 :0.00 :0.00 :0.00 :0.00 :0.01 :
3.95 :========
0.00 :0.65 :0.02 :0.00 :0.00 :0.25 :0.37 :0.59 :0.39 :0.86 :0.43 :0.02 :0.00 :0.00 :0.00 :0.00 :0.00 :
3.44
0.160.070.140.000.000.170.541.340.301.150.470.000.010.000.000.000.00
: 4.54
: 0.04: 0.00: 0.00: 0.00: 0.02: 0.22: 0.47: 1.06: 0.47: 0.35: 0.09: 0.00: 0.00: 0.00: 0.00: 0.00: 0.00
: 3.75
: 0.00: 0.46: 0.00: 0.00: 0.00: 0.47: 0.07: 1.03: 0.60: 0.69: 0.43: 0.01: 0.04: 0.01: 0.00: 0.00: 0.00
: 0.00: 0.00: 0.00: 0.70: 1.17: 0.96: 0.03: 0.00: 0.23: 0.01: 0.73: 0.03: 0.01:*0.12: 0.00:*1.03: 0.00: 0.00: 0.00=======: 5.02
: 0.00:*0.02: 0.00: 0.00: 0.00:*0.31:*0.15:*1.26:*0.51:*0.39:*0.12: 0.00: 0.00: 0.01: 0.00: 0.00: 0.00
: 0.00 :: 0.00 :: 0.00 :: 0.86 :: 0.70 :: 0.72 :: 0.02 :: 0.00 :: 1.24 :: 0.01 :: 0.40 :: 0.00 :: 0.00 :: 0.00 :: 0.00 :: 0.25 :: 0.00 :: 0.00 :: 0.00 :========: 4.20 :
: 0.20 :: 0.34 :: 0.02 :: 0.00 :: 0.00 :: 0.20 :: 0.14 :: 0.63 :: 0.52 :: 0.57 :: 0.19 :: 0.04 :: 0.01 :: 0.01 :: 0.00 :: 0.00 :: 0.00 :
=========================================================================================================3.40
1TOT = Monthly
: 4.94
totals
: 3.08 : 2.66 : 4.76 : 1.79 : 3.97 : 4.28 : 4.28 :=======
3.58 : 4.35=====
: 2.72 : 3.81 : 2.77 : 2.87 :
-133-
======================================================2========================================================
TABLE 4
DAILY AND
DATE
====== AUG456789101213192024252829
======MTOT
SEPTi5678910111415181920212225
======MTOT======WTOT
MONTHLY
AUSTIN URBAN HYDROLOGY STUDY :
RAINFALL SUMMARY FOR GAGES SOUTH OF THE COLORADO RIVER PERIOD : 1983 WATER YEAR :
GAGE NUMBER :
1BAR
0.020.000.040.000.190.000.000.240.000.690.000.550.010.510.00
=====2.25
0.000.000.001.270.370.710.330.000.000.001.711.920.860.000.000.00
: 2BAR :
: 0.37 :: 0.00 :: 0.10 :: 0.00 :: 3.25 :: 0.00 :: 0.00 :: 0.00 :: 0.00 :: 0.37 :: 0.00 :: 0.00 :: 0.23 :: 0.32 :: 0.00 :
: 4.64 :
: 0.00 :: 0.00 :: 0.00 :: 1.94 :: 0.04 :: 0.21 :: 0.00 :: 0.00 :: 0.00 :: 0.00 :: 2.85 :: 1.17 :: 0.46 :: 0.00 :: 0.00 :: 0.00 :
3BAR
0.090.000.580.021.180.040.000.00o.no0.340.010.000.040.220.02
2.54
0.000.000.000.400.420.230.010.000.000.001.981.200.420.010.000.00
: 1BOL :
: 0.84 :: 0.01 :: 0.00 :: 0.02 :: 1.91 :: 0.02 :: 0.00 :: 0.00 :: 0.00 :: 0.21 :: 0.01 :: 0.00 :: 0.00 :: 0.32 :: 0.01 :
: 3.35 :
: 0.00 :: 0.00 :: 0.00 :: 0.59 :: 0.11 :: 0.03 :: 0.97 :: 0.02 :: 0.07 :: 0.00 :: 1.58 :: 0.52 :: 0.27 :: 0.00 :: 0.01 :: 0.00 :
1-ON
0.060.000.150.140.110.560.010.400.010.410.010.750.010.03
: 2-ON
: 0.02: 0.00: 0.00: 0.00: 2.16: 0.01: 0.00: 0.12: 0.02: 0.31: 0.00: 0.00: 0.00: 0.02
: 1BER
: 0.03: 0.00: 0.04: 0.00: 2.27: 0.01: 0.00: 0.03: 0.00: 0.14: 0.01: 0.06: 0.00: 0.02
: 2BER
: 0.47: 0.00: 0.00: 0.22: 1.93: 0.02: 0.00: 0.12: 0.01: 0.19: 0.01: 0.63: 0.00: 0.00
0.01 : 0.01 : 0.00 : 0.00==========================8
2.66 : 2.67 : 2.61 : 3.60
0.120.000.000.031.370.130.480.000.000.001.312.140.060.000.000.00
: 0.00: 0.00: 0.00: 0.22: 0.25: 0.02: 0.12: 0.05: 0.00: 0.00: 2.79: 1.13: 0.06: 0.00: 0.00: 0.00
========================================7.17 : 6.67 :
==============41.27 :44.04 :
4.67 : 4.17 : 5.64 : 4.64==========================38.14 :40>.85 : 41.93 :41.14
: 0.00: 0.00: 0.00: 0.35: 0.51: 0.12: 0.02: 0.00: 0.00: 0.00: 3.16: 0.74: 0.03: 0.00: 0.00: 0.00
: 0.00: 0.00: 0.00: 0.02: 0.22: 1.59: 0.03: 0.00: 0.00: 0.00: 3.18:*0.89:*0.04: 0.00: 0.00: 0.00
: 1LBR
: 0.05: 0.00: 0.00: 0.00: 2.36: 0.03: 0.01: 0.16: 0.02: 0.33: 0.00: 0.00: 0.00: 0.00: 0.00
: 2.96
: 0.00: 0.00: 0.00: 0.08: 0.37: 0.22: 0.16: 0.01: 0.00: 0.00: 4.10: 1.65: 0.00: 0.00: 0.00: 0.00
: 1SLA
: 0.08: 0.00: 0.45: 0.02: 1.71: 0.01: 0.00: 0.08: 0.02: 0.28: 0.00: 0.07: 0.00: 0.44: 0.01
======== : 3.17
: 0.00: 0.00: 0.00: 1.15: 0.17: 0.52: 0.03: 0.00: 0.00: 0.01: 3.30: 1.11: 0.14: 0.00: 0.00: 0.01
=============================: 4.93
========:39.97
: 5.97======8
:41.89
: 6.59 : 6.44
: 2SLA
: 0.49: 0.00: 0.00: 0.03: 1.87: 0.02: 0.01: 0.20: 0.02: 0.21: 0.00:*0.03: 0.00:*0.16: 0.00
: 3.04
: 0.00: 0.00: 0.00:*0.40:*0.06:*0.18:*0.01: 0.00: 0.00: 0.00: 3.16: 1.11: 0.65: 0.00: 0.00: 0.00
: 1BGS :
: 0.79 :: 0.00 :: 0.00 :: 0.34 :: 3.35 :: 0.23 :: 0.01 :: 0.00 :: 0.00 :: 0.14 :: 0.00 :: 0.00 :: 0.27 :: 0.03 :: 0.00 : ========: 5.16 :
: 0.00 ::*0.37 ::*0.20 ::*0.39 ::*0.02 ::*0.41 ::*0.41 ::*0.01 :: 0.01 :: 0.00 :: 3.22 :: 0.77 :: 0.33 :: 0.00 :: 0.00 :: 0.00 :
1WMS
*0.300.000.00
*0.06*1.55*0.02*0.01*0.18*0.020.280.000.050.030.390.00
2.89
0.000.000.000.890.061.000.020.000.000.023.611.160.320.000.000.00
: 2WMS
: 0.75: 0.00: 0.00: 0.02: 2.93: 0.13: 0.01: 0.00: 0.00: 0.17: 0.00: 0.00: 0.00: 0.24
.: 3WMS :
.: 0.05 :: 0.00 :: 0.01 :: 0.41 :: 1.47 :: 0.05 :: 0.01 :: 0.13 :: 0.01 :: 0.45 :: 0.00 :: 0.05 :: 0.21 :: 0.76 :
: 0.00 : 0.02 : ===============: 4.25 : 3.63 :
: 0.00: 0.32: 0.17: 0.33: 0.02: 0.35: 0.35: 0.01: 0.00: 0.01: 2.85: 0.80: 0.34: 0.01: 0.00: 0.00
===========================: 5.57
=====================:47.12 :41.95 :41.30
: 6.14 :========:44.01 :
7.08 : 5.56============43.99 :46.81
:: 0.00 :: 0.00 :: 0.00 :: 0.95 :: 0.02 :: 1.17 :: 0.01 :: 0.02 :: 0.00 :: 0.02 :: 3.08 :: 0.96 :: 0.76 :: 0.01 :: 0.00 :: 0.00 :
=========: 7.00 :
=========:42.93 :
MTOT = Monthly totalsWTOT = Water year totals
* = Estimated
-134-
Table
5. Summary o
f st
orm
rainfall-runoff, 1983
tn
Date of
St
orm
May
19-20, 1983
May
10,
1983
Rainfall (inches)
Dura
tion
To
tal
Maxi
mum
increment
(hours)
15-m
inut
e 30-minute
60-minute
0815
4700
Bu
ll Cr
eek
at Lo
op 36
0, Au
stin
2 2.
11
0.49
0.72
1.18
0815
5550
West Bo
uldi
n Creek
at Riverside
Driv
e,
5 2.
34
1.02
1.18
1.99
Rati
o of
Runo
ff
runo
ff t
o (inches)
rainfall
, Te
x. 0.11
0.05
Aust
in,
Tex.
.19
.08
Maxi
mum
disc
harg
e (ft3
/s)
409 275
0815
6700
Shoal
Creek
at No
rthw
est
Park
, Au
stin
Te
x.
May
10-11, 1983
3 2.15
.77
1.04
1.71
.40
.19
1,07
0
08156800
Shoa
l Creek
at 12th Street,
Aust
in,
Tex.
May
10-1
1, 1983
3 2.
24
.77
1.04
1.71
.48
.21
1,63
0
08158050
Bogg
y Creek
at U.
S. Hw
y. 183, Au
stin
, Tx
June
4-5,
1983
4 1.94
1.09
1.38
1.52
.28
.14
1,13
0
0815
8600
Wa
lnut
Creek
at Webberville
Road,
Austin,
Tex.
Augu
st 8
, 1983
4 1.
84
.98
1.51
1.55
.28
.15
2,570
Tab
le 5
- S
um
ma
ry of
stor
m ra
infa
ll-r
unoff,
1983
Dat
e of
Sto
rmR
ain
fall
(inch
es)
Du
ratio
n
(hours
)T
ota
lM
axim
um
incr
emen
tRu
noff
Ratio
of
runo
ff t
o15
-min
ute
30-m
inute
6
0-m
inu
te
(in
che
s)
rain
fall
Max
imum
dis
charg
e(f
t3/s
)
May
19
-20,
19
83
0815
4700
B
ull
Cre
ek
at
Loop
36
0,
Austin,
Tex
.
2.11
0.
49
0.72
1.
18
0.11
0.05
409
May
10,
1983
08155550
West
Bouldin
Cree
k at Ri
vers
ide
Drive, Au
stin
, Te
x.
5 2.34
1.02
1.18
1.99
.19
.08
275
May
10-1
1, 1983
08156700
Shoal
Cree
k at
No
rthw
est
Park,
Austin T
ex,
2.15
.77
1.04
1.71
.40
191,
070
May
10-1
1, 1983
08156800
Shoa
l Cr
eek
at 12th St
reet
, Au
stin
, Te
x.
2.24
.77
1.04
1.71
.4
8,2
11,
630
June
4-5
, 1983
0815
8050
Bo
ggy
Cree
k at
U.S. Hw
y. 18
3, Au
stin
, Te
x.
1.94
1.09
1.38
1.52
.28
.14
1,13
0
Augu
st 8,
1983
08158600
Walnut C
reek
at
Webb
ervi
lle
Road,
Aust
in,
Tex,
4 1.84
.98
1.51
1.55
.28
.15
2,57
0
Tabl
e 5.
Sum
mary
of
storm
rainfall-runoff, 1983 Continued
Rainfall (incnes)
Rati
o ofMaximum
Date o
f St
orm
DurationTotalMaximum i
ncre
ment
Runoff
runo
ff t
o discharge
(hours)
lb-minute3U-minutebU-minute
(inc
hes)
rainfall
(ft^/s)
08158700
Onio
n Creek
near
Dri
ftwo
od,
Tex.
May
20-21, 19
83
20
2.66
0.43
0.79
1.13
0.
17
0.06
43
3
0815
8800
Onion
Creek
at B
uda.
Te
x.
May
20-2
1, 19
83
30
2.59
.60
1.13
1.78
.34
.13
1,65
1)
08158810
Bear C
reek be
low
farm R
oad
1826
near D
rift
wood
, Te
x
^
May
20-2
1, 19
83
20
2.44
.49
.71
1.12
.13
.05
125
to
________________________________________________
____ _________________________________________
08158820
Bear
Creek at
Farm
Road
16
26 n
ear
Manchaca
, Te
x.
May
20-21, 1983
19
2.44
.49
.71
1.12
.1
4 .0
6 39
7
08158825
Litt
le B
ear
Creek
at F
arm
Road 1
626
near M
anchaca, Te
x.
May
10,
1983
2
2.84
.8
6 1.71
2.55
.05
.02
749
08158840
Slau
ghte
r Creek
at F
arm
Road
18
26 near A
usti
n, Tex.
May
20,
1983
1
1.51
.77
.80
1.23
.07
.04
201
Table
5.--
Summ
ary
of s
torm r
ainf
all-
runo
ff,
1983 Continued
_________
Rainfa 11(inches)___________
Ratio
of
Maximum
Date o
f Storm
DurationTotalMaximum i
ncrement
Runoff
runoff t
o discharge
(hou
rs)
15-m
inut
e30-
minu
te60
-min
ute
(inches)
rainfall
(ft^
/s)
0815
8880
Bo
ggy
Creek
(South)
at C
ircl
e S
Road
, Au
stin
, Te
x.
May
10,
1983
1
2.61
1.
34
1.74
2.44
0.75
0.29
1,49
0
08158920
Will
iams
on C
reek a
t Oa
k Hi
ll,
Tex.
May
20,
1983
1
1.61
0.67
0.
71
1.41
.21
.13
456
08158930
Williamson C
reek a
t Manchaca R
oad,
Austin,
Tex.
May
20,
1983
1 1.
71
.83
.85
1.25
.21
.13
730
0815
8970
Wi
llia
mson
Creek a
t Jimmy
Clay R
oad,
Au
stin
, Te
x.
May
20,
1983
6
1.77
.8
3 .84
1.25
.1
7 .09
617
Table 6. Rainfall and runoff data for selected continuous-record gaging stations in the Austin urban study area, 1983 water year
Station
Bull Creek at Loop 360, near Austin, Tex. (08154700)
Weighted-mean ra i nf a 1 1 (inches)
39.16
Total runoff
(inches)
4.15
Ratio of runoff to rainfall
0.11
Barton Creek near Camp Craft Road 40.51 3.17 .08 near Austin, Tex. (08155260)
Barton Creek at Loop 360, 40.33 .83 .02 Austin, Tex. (08155300)
Shoal Creek at Northwest Park, 38.48 7.11 .18 Austin, TX (08156700)
Boggy Creek at U.S. Hwy. 183, 37.97 7.25 .19 Austin, TX (08158050)
Walnut Creek at Webberville 42.23 5.53 .13 Road, Austin, TX (08158600)
Onion Creek near Driftwood, 41.93 3.30 .08 TX (08158700
Onion Creek at Buda, TX 41.71 .70 .02 (08158800)
Bear Creek at Farm Road 1826 39.97 5.57 .14 near Driftwood, TX (08158810)
Slaughter Creek at Farm Road 42.01 3.86 .09 1826 near Austin, Tex. (08158840)
Williamson Creek at Oak Hill, 43.10 4.73 .11 Austin, Tex. (08158920)
Williamson Creek at Jimmy Clay 45.15 2.93 .06 Road, Austin, Tex. (08158970)
Note: See "Remarks" paragraph of station descriptions in the section "Compilation off Data" for information about regulation or diversion.
-139-
Table 7. Peak discharges associated with water-quality samplescollected during storms
Water-quality sample
Stationno.
08154700
08155260
08156800
08158050
08158200
08158600
08158700
Stationname
Bull Creek atLoop 360 nearAustin, Tex.
Barton Creeknear Camp CraftRoad nearAustin, Tex.
Shoal Creek at12th Street,Austin, Tex.
Boggy Creekat U.S. Hwy.183, Austin,Tex.
Walnut Creekat Dessau RoadAustin, Tex.
Walnut Creekat Webber-ville Road,Austin, Tex.
Onion CreeknearDriftwood,Tex.
Date
Feb. 9May 11Sept. 19
Feb. 9
Mar. 23May 20Aug. 8Sept. 7
Mar. 4May 20
Mar. 4
Mar. 4
Mar. 23
Time
1245(3 samples)(4 samples)
1340
1030(2 samples)13031640
1300(6 samples)
1415
1340
1200
Instantaneousflow
(ft3/s)
25
23
300
40316
106
27
87
126
Date
Feb.MaySept.
Feb.
Mar.MayAug.Sept.
Mar.May
Mar.
Mar.
Mar.
Peak flow
91119
9
232087
420
4
4
23
Time
103000301230
1130
1015153014301545
14001530
1445
1350
1300
(ft^/s)
55181350
27
3321,1201,980
40
2002,500
41
95
139
See footnotes at end of table.-140-
Table 7. Peak discharges associated with water-quality samples collected during storms continued
Water-quality sample Peak flow
Stationno.
08158800
08159000
08158810
08158825
08158840
08158920
Stationname
Onion Creekat Buda, Tex.
Onion Creek at U.S. Hwy. 183 near Austin, Tex.
Bear Creekbelow P.M.Road 1826 nearDriftwood, Tex.
Little BearCreek at P.M. Road 1626 nearManchaca, Tex.
Slaughter Creek at P.M.Road 1826 nearAustin, Tex.
Williamson Creek at Oak Hill, Tex.
Date
Mar. 23
Feb. 9
Feb. 9
Feb. 9Sept. 19
Sept. 19
Feb. 9 May 20 Aug. 8 Sept .7 Sept. 9
Time
1130
1435
1230
13551210
1300
1300 (6 samples) (6 samples) (3 samples) 1525
Instan- Date Timetaneousflow
(ft3/s)
3.4 Mar. 23 1100
757 Feb. 9 1530
14 Feb. 9 1200
.59 Feb. 9 1430381 Sept. 19 1210
40 Sept. 19 1530
14 Feb. 9 1015 May 20 1500 Aug. 8 1330 Sept. 7 1700
233 Sept. 9 1515
(ft3/s)
3.7
1,830
14
.66381
126
58 456 7b6 376 209
See footnotes at end of table.
-141-
Table 7 .--Peak discharges associated with water-quality samples collected during storms continued
Water-quality sample Peak flowStation
no.
08158970
Station Date Timename
Williamson Feb. 9 1255Creek at Jimmy May 11 1205Clay Road,Austin, Tex.
Instan- Date Timetaneousflow
(ft3/s)
82 Feb. 9 133017 May 11 0230
(fWs)
149472
a/ Unknown.
-142-
Table
8
. R
eco
rds
of
we
lls,
test
ho
les,
an
d sp
rin
gs
in
the
A
ust
in
urba
n st
udy
area
Wate
r-bearing u
nits:
Kea
, E
dwar
ds
and
ass
oci
ate
d
lime
sto
ne
s;
Kgru
, U
pper
G
len
Ros
e;
Kgrl,
Low
er
Gle
n R
ose;
K
ho,
Hoss
ton.
Met
hod
of lift
and
type of
pow
er:
C,
cylin
der;
cf,
centr
ifugal;
£,
ele
ctr
ic;
G,
na
tura
l ga
s,
buta
ne,
or
gasolin
e;
H,
hand
J,
Jet;
N,
none
; S
, su
bm
ers
ible
; T
, tu
rbin
e;
W,
win
dm
ill.
Use
of
wate
r:
D,
dom
est
ic;
Ind
, in
du
str
ial; Ir
r,
irrigation;
N,
none
; P
, public
su
pply
; S
, liv
esto
ck.
No.
Ow
ner
Drille
rD
ate
com
p
lete
d
Dep
th
of
well
(ft)
Ca
sin
gD
iam
ete
r
(in
)
Dep
th
(ft)
Wate
r
be
arin
g
un
it
Alti
tude
o
f la
nd
su
rfa
ce
(ft)
Wat
er
level
VB
elow
la
nd
Dat
e of
late
st
Met
hod
surf
ace
m
easu
rem
ent
for
of
datu
m
annu
al
wa
ter-
lift
level
surv
ey
(ft)
Use
o
f w
ate
rR
emar
ks
Tra
vis
Cou
nty
YD
-58-
36-8
05 809
810
813
814
903
, £ Y
D-5
8-42
-911 91
3
925
926
YD
-58-
49-6
D4
50-1
01 206
YD
-58-
50-2
11 213
215
Ean
es
Sch
ool
Ca
rlysle
S
chn
elle
Sw
enso
n
G &
J W
ater
C
o.
Della
no H
ills
City of
Aust
in
Bee
Cav
es
Pro
pe
rties
Par
k H
ills
Ba
ptist
Chu
rch
Jim
my
Shi
pwas
h
Eug
ene
Jaco
bs
0.
B.
McK
own,
Jr.
T.
A.
Be
cke
tt,
Jr.
Ken
neth
W
ing
fie
ld
Tra
vis
C
ount
ryE
state
s
Bill
Ash
baug
h
City of
Sun
set
Val
1 e
y
S.
W.
Gla
ss
Gla
ss
Bos
ton
Fu
rr
C.
T.
Ste
rzin
g
C.
T.
Ste
rzin
g
_ Ch
arle
s D
ell
ana
Ric
ha
rd B
ible
Ric
ha
rd B
ible
Hug
h G
lass
C.
T.
Ste
rzin
g
Will
B
eck
ett
W.
H.
Gla
ss
Ric
ha
rd B
ible
- Tom
A
rnold
1954
1949
1912
- - 1920
's
19
20
's
1969
1975
1963
1957
1921
1968
1973
- 1976
876
340
295
300
300 45 135
180
180
190
565
217
257
282
300
360
7 6 6 8 10 5 6 7 5 6 7 7 7 7 7 6-5
/8
705 98 80 - - 10 90 16
5
180
- 450 12 53
265 -
200
Kg
rl
Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kg
rl
Kea
Kea
Kea
Kea
Kea
770
720
700
660
660
460
517
540
575
600
898
810
680
670
705
675
229.7
5
Aug
. 24
, 19
83
N S,
187.
9 A
ug.
24,
1983
N
211.
45
May
13
, 19
83
S, S,
27.0
6 A
ug.
24,
1983
S
,
77.1
5
May
13
19
83
S,
S,
139.
3 A
ug.
24,
1983
S
,
156.
7 Ju
ly
18,
1983
S
, S,
179.
55
Aug
. 24
, 19
83
S, S,
210.
35
Aug
. 24
, 19
83
S,
217.
15
Aug
. 24
, 19
83
S,
_
E L E E E E E E E E E E E
N D N P P N D,
Irr
D Irr
Irr
Irr
D D Irr
0 P
Rep
orte
d dr
awdo
wn,
19
0 fe
et
at
22
gal /
mi n
in
M
ov.
1954
. 3
/ 5
/
i/ 1'
Th
is
we
ll su
pplie
s 15
fa
milie
s.
This
w
ell
supplie
s 24
fa
milie
s.
Ope
n hole
be
low
ca
sing.
Wa
ter-
leve
l re
cord
er
on th
is w
ell.
3
/
Origin
ally
du
g to
90
fe
et
the
ndrilled to
13
5 fe
et.
4/
i/ 1/3
/
6/
Report
ed y
ield
28
ga
l /m
i n.
2/
6_/
7, 1
6/
Rep
orte
d yie
ld,
10
gal /
mi n
.C
emen
ted
fro
m 0
-53 fe
et.
6/_
7/
3/
6/
- i/
7/ i/ I/
See
foo
tno
tes
at
end
of
table
.
Table 8. Recor
ds of w
ells,
test h
oles,
and
spri
ngs
in the
Aust
in ur
ban
stud
y ar
ea C
onti
nued
No
.
216
217
220
301
401
406
408
i £ Y
D-5
8-50
-412 50
2
517
704
705
721
801
Ow
ner
U.S
. G
eolo
gic
al
Sur
vey
U.S
. G
eolo
gic
al
Sur
vey
Bud
dy
Fo
wle
r
John
Lo
vela
dy
A.I.S
.D.
Geo
rge
Sla
ug
hte
r
Ric
hard
A
ust
in
Circle
C
Ran
ch
Mrs
. R
. W
. H
ernd
on
Ted
Sw
anso
n, Jr.
Marb
ridge
Fo
un
da
tion
Ric
ha
rd M
cKea
n
La
rry
Jack
son
C.
H.
Bird
Drille
r
Tex
as
De
pt.
o
fW
ater
R
esou
rces
Tex
as
Dept.
of
Wat
er
Res
ourc
es
Ric
ha
rd B
ible
Gus
S
ande
rs
Gla
ss
John
G
lass
E.
W.
Gla
ss
Gla
ss
Gla
ss
Centr
al
Tex
-O
rillin
g
Ce
ntr
al
Tex
.D
rillin
g
C.
T.
Ste
rzin
g
Hug
h G
lass
Will
iam
son
&A
dair
Dat
e co
m
ple
ted
1978
1978
1974
1949
1967
1946
1971
1972
1937
1973
1968
1965
1979
1939
Dep
th
of
well
(ft)
582
129
310
388
404
360
439 295
300
430
345
200
400
277
Casi
ng
Di a
m-
Dep
th
ete
r
(in)
(ft)
Tra
vis
4 58
0
4 14
4
6 31
0
5 29
6
7 25
2
5 10
0
7 12
5
7 19
4
5-5
/16
16
8
6-3
/8
290
16
6814
40
7 16
45-1
/2
200
4 40
0
5-1
/4
200
Wa
ter
b
ea
rin
g
unit
Alti
tude
of
land
surf
ace
(f
t)
Wat
erB
elow
la
nd
surf
ace
da
tum
(ft)
level
I/D
ate
of
late
st
mea
sure
men
t fo
r an
nual
w
ate
r-
leve
l su
rve
y
Het
nod
of
lift
Use
o
f w
ate
rR
emar
ks
Cou
nty C
ontin
ued
Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kea
692
567
675
640
750
820
772
809
740
695
727
660
680
662
233.5
116.
0
-
156.
30
- -
178.
2
158.
75
220.
4
155.
15
158.
6 -
92
.85
Aug
. 24
, 19
83
Aug
. 24
, 19
83
--
Aug
. 24
, 19
83
- -
July
19
, 19
83
Ju
ly
26,
1983
Ju
ly
20,
1983
Aug
. 24
, 19
83
Aug
. 25
, 19
83
-
Aug
. 26
, 19
83
N N S,
E
N S,
E
S,
E
S,
E
N S,
E
S,
E
S,
E
S,
E
S,
E,
S,
E
N N D N D,
S
D D N Irr,
S
Irr
Irr
D D N
U.S
. G
eo
l. S
urve
y te
st
well
#3.
_3 / 5
/ y
U.S
. G
eo
l. S
urve
y te
st
we
ll #2
A3/
_5/
1J
I/ y i/
1/i/ U
I/ Rep
orte
d dr
awdo
wn
0 fo
ot
whe
n pu
mpe
d at
25 gal/m
info
r on
e hour
on
Mar
. 18
,19
71.
6/
3/
5/
6_/
_4/ y
Rep
orte
d yie
ld,
300
gal/m
in.
Mea
sure
d dr
awdo
wn,
12
fe
et
after
pum
ping
72
hours
at
942
ga
l/m
in,
2 fe
et
at
578
gal/m
in,
and
1 fo
ot
at
473
gal/m
in.
_3/ £/ U
i/ I/ Re
po
rte
d y
ield
, 10
gal/m
in.
2/
3/
810
A. L.
Wunneburger
Emmett G
lass
1969
359
YO-58-58-301
Unit
ed G
as
Pipeline
1943
703
205 639
Kea
Kea
625
734
S, £
143.20
Dec.
28,
1983
N
Repo
rted
drawdown, 20 f
eet
after
bailing
1 hour at
40 g
al/m
in.
2J 6
/ 7/
U.S. Geol.
Survey ob
serv
atio
n well.
2/ 3/
See
foot
note
s at e
nd o
f ta
ble.
Ta
ble
8
. R
eco
rds
of
wells
, te
st
ho
les,
an
d sp
rin
gs
in
the A
ust
in
urba
n st
udy
are
a C
on
tin
ue
d
Ca
sin
g
No.
Ow
ner
Drille
rD
ate
com
- pl
ete
d
Dep
th
of
we
ll (f
t)
Dia
m
ete
r
(in
)
Dep
th
(ft)
Wa
ter
b
ea
rin
g
un
it
Alti
tude
o
f la
nd
surf
ace
(f
t)
Wat
er
level
Bel
ow
land
surf
ace
da
tum
(ft)
I/D
ate
of
late
st
mea
sure
men
t fo
r an
nual
w
ate
r-
leve
l su
rve
y
Met
hod
of
lift
Use
of
Rem
arks
w
ate
r
Hay
s C
ount
y
LR-5
8-49
-801 90
3
57-1
01 201
202
LR-5
8-57
-302 30
3
402
503
( £
901
i
903
58-1
01 105
LR
-58
-58
-11
1
403
406
504
704
Cla
ra
Cal
houn
Mrs
. B
liss S
pill
ar
M.
0.
Rog
ers
Mik
e R
uth
erf
ord
Fa
rris
Jack
D
ahls
trom
W.
D.
Turn
er
Tom
Fa
ire
y
Mic
hael
is
Ran
ch
Hay
s C
on
solid
ate
dS
choo
l D
istr
ict
Mou
ntai
n C
ity
Ran
ch
Fra
nklin
Joe
Low
ke
Hay
s C
ity
City of
Bud
a
Tex
as
Cem
ent
Rog
er
Bro
wn
0.
H.
Culle
n
Tyle
r
-- Har
vey
Sca
rly
W.
H.
W.
H.
Jam
es
_ E.
A.
C.
L.
Har
mon
Gla
ss
Gla
ss
Gla
ss
B.
Tuck
er
Gla
ss
Tyle
r
Tom
Arn
old
- J.
B.
F.
S.
C.
T.
E.
R.
Vird
ell
Tat
um
Ste
rzin
g
Ow
nes
1942
~ 1930
' s
1945
-- 1973
1973
1976
Be
fore
1900
1968
1943
1907
1978
- 1954
1966
1962
1972
100
200
125
320
200
415
315
380
180
575
400
243
477 33
8
390
525
640
532
6 4 6 6 7
12
7 6 4 10 6 5 4 6 10 10 7 7
20 - 120 ~ 200
158
315 55 _ 235 230
480
150
222
310
514
368
Kea
Kea
Kgr
u
Kea
Kea
Kea
Kea
Kea
Kea
Kea Kea
Kea
Kea
Kea
Kea
Kea
Kea
Kea
856
830
992.
7
925
905
809
870
880
812
821
822
707
2
773
705
710
743
778
746
36.0
5
- 56
.06
5.6
16
2.0
24.0
187.
95
12
0.8
134.
6
_ 201.
15
105.
8
-
150.
75
106.5
139.
1
164.
9
154.
6
Aug
.
Ju
ly
Aug
.
Ju
ly
Aug
.
Aug
.
Aug
.
Aug
.
Aug
.
Aug
.
Ju
ly
Aug
.
Ju
ly
26,
~ 20,
26,
21,
25,
~ 26,
25,
_ 26,
26,
~ 25,
~ 25,
26,
21,
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
S,
E
C,
E
S,
E
C,
W
S,
E
S,
E
S,
E
S,
E.
C,
W
S,
E
C,
W
N S,
E
S,
E
T,
E
S,
E
S,
E
S,
E
S S D S S S D U S S N 0 P P P N D
I/ i/
I/ 6/ 2!/
3/
i/ _5/7
/
6/
7/
_3/£
/
6/
7/
2 /
3/
y y
i/5_
/ 6_
/
i/ 6/
Cem
ente
d 0
-31
0 f
eet.
2/
]_/
I' U*n
j
M
Sele
cted w
ells
a
re
incl
uded
in
mo
nth
ly w
ate
r-le
vel
surv
eys
(s
ee
tab
le 9).
27
Tex
as
Dep
artm
ent
of
Wat
er
Res
ourc
es
obse
rvatio
n w
ell.
7/
Month
ly w
ate
r-le
vel
mea
sure
men
ts a
va
ilab
le
in
tab
le 9.
T/
Dis
contin
ued obse
rvatio
n w
ell.
T/
Geo
phys
ical
lo
g
(ra
dio
activity
or
ele
ctr
ic lo
g).
F/
Wel
l or
sprin
g
sam
pled
fo
r qualit
y
of
wa
ter.
T/
Driller's
log,
sam
ple
log
, or
core
data
.
Tab
le 9
. W
ate
r-qualit
y
data
fr
om w
ells
an
d sp
rings
in
the
A
ust
in
urba
n st
udy
area
LOCAL
IDENT
I
FIER
YD 58-42-309
YD 58-42-814
YD 58-42-913
YD 58-42-926
YD 58-49-604
YD 58-50-101
YD 58-50-206
YD 53-50-211
YD 58-5C-215
YD-58-50-220
YD 58-50-401
YD 58-50-406
YD 58-50-408
YD-58-50-412
YD 58-50-502
YD 58-50-704
YD-58-50-705
YO-58-50-721
YD 53-50-810
DATE
OF
SAMPLE
83-07-18
83-07-18
83-07-13
83-05-21
83-05-22
83-05-23
83-05-25
83-07-18
33-07-22
83-07-19
83-07-19
83-07-19
83-07-19
83-05-21
83-05-23
83-07-22
83-07-19
83-07-19
83-07-19
83-07-20
83-07-20
83-05-21
83-05-22
83-05-23
83-05-25
33-05-21
83-05-23
83-07-20
PJMP
OR FLOW
PERIOD
PRIOR
TO SAM-
TIME
PLING
(MIN)
(72004)
1045
0845
1300
1050
0940
0830
1115
1205
1400
0835
0918
0805
1000
1130
0915
0950
1210
1330
1245
1330
0930
1135
1010
1030
1345
1105
0955
1415
60 60 60 20
35
20
20
30 60 60 20 60 60 20
20 30 20 20 15 25 20 20
20 20
20 20 20 25
DEPT
H CO
LI-
BELO
W SPE-
FORM
/ DE
PTH
LAND
CI
FIC
FECAL/
Oc
SURFACE
CON-
PH
0.7
WELL
/ (WATER
DUCT
- (STAND-
TEMPER-
UM-M
F TO
TAL
LEVEL)
ANCE
ARD
ATUR
E (COLS./
(FEET)
(FEE
T)
(UMH
OS)
UNIT
S)
(DEG
C)
100
ML)
(720C8)
(72019)
(00095)
(00400)
(00010)
(31625)
TRAVIS
340
300
180
190
190
190
190
190
565
217
257
282
360
310
310
404
360
439
295
300
220.00
345
--
154.00
200
--
200
200
200
--
4CO
~-
400
359
494
54o
01 0
589
583
586
590
58o
632
649
514
601
582
587
586
553
070
597
568
475
476
523
523
531
524
55o
563
767
7.8
7.1
7.4
7.2
7.4
7.4
7.3
7.4
7.6
7.1
7.1
6.9
6.9
7.4
7.3
7.5
7.0
7.1
7.0
7.4
7.5
7.3
7.4
7.3
7.2
7.3
7.3
7.5
23.0
<1
22.5
<1
23.0
K1
21.0
K3300
21 .5
110
22.0
63
21.5
K3
22.0
43
24.0
<1
26.5
<1
22.0
K1
22.0
K16
24.0
<1
22.0
<1
22.5
<1
23.0
<1
24.0
<1
24.5
K1
23.5
K2
K13
K14
21.0
K1
21.0
K8
21.0
26
22.0
30
22.0
<1
22.5
<1 K1
STREP
TOCOCCI
FECAL/
KF AGAR
(COL
S.
PER
100
ML)
(31673)
K18 <1 30
5200
14000
7000
380
1300 66 22 33
160
270 ^ <1
120
K113
140
220 33
K10
600
360
220 K2
220
Tabl
e 9.
--Wa
ter-
qual
ity
data fr
om w
ells
an
d sp
ring
s in
the
Austin urban
stud
y area Continued
LOCAL
IDENT
I
FIER
YO 5S-42-809
YO 58-42-814
YO 58-42-913
YO 58-42-926
YO 58-49-604
YD 58-50-101
YD 58-50-206
YD 58-50-211
YO 58-50-215
YD-58-50-220
YO 58-50-401
YD 58-50-406
YD 58-50-408
YD-58-50-412
YD 58-50-502
YD 5S-50-704
YD-5S-50-705
YO-58-50-721
YD 58-50-310
SOLIDS,
CHLO-
FLUO
- SI
LICA
, SUM
OF
RIDE
, RIOEx
DIS-
CO
NSTI
- DA
TE
DIS-
DI
S-
SOLVED
TUENTS,
OF
SOLVED
SOLVED
(MG/
L -D
IS-
SAMPLE
(MG/
L (M
G/L
AS
SOLVED
AS CD
AS F)
SI02)
(MG/L)
(00940)
(00950)
(00955)
(70301)
83-07-18
14
83-07-18
15
83-07-18
14
83-05-21
83-05-22
83-05-23
83-05-25
83-07-18
16
83-07-22
13
83-07-19
9.0
83-07-19
16
83-07-19
22
83-07-19
13
83-05-21
14
83-05-23
83-07-22
13
83-07-19
23
83-07-19
16
83-07-19
10
83-07-20
10
83-07-20
11
83-05-21
83-05-22
83-05-23
83-05-25
83-05-21
33-05-23
83-07-20
29
TRAVIS
.20
9.0
.20
10
.20
10
.20
11
.70
10
.70
13
.20
11
.20
10
.20
15
.20
12
.20
11
.30
13
.20
U
.10
13
.20
11
.20
11
2.1
11
270
300
350
330
360
360
280
350
320
330
320
370
330
310
270
270
440
NITRO
GEN,
N02+N03
TOTAL
(MG/L
AS N)
(00630)
<.100
1.10
1 .60
1 .60
1.60
1.70
1 .60
1 .70
.300
.300
1 .70
1 .20
2.60
2.40
2.40
1 .60
4.70
1 .1
0
1.50
.600
.500
1 .3
0 1.30
1.30
1 .10
1 .20
1 .20
<.100
NITRO
GEN/
NITRITE
TOTAL
(MG/L
AS N)
(00615)
<.020
<.020
<.020
<.050
<.020
<.020
<.020
<.020
<.020
<.020
<.C20
<.020
<.020
<.020
<.C20
<.020
<.020
<.020
<.020
<.020
<.020
<.C20
<.020
<.020
<.020
<.020
<.020
<.020
NITRO-
NITRO
GEN,
GEN,
PrtO
S-
AMMONIA
ORGANIC
PHORUS/
TOTAL
TOTAL
TOTAL
(MG/L
(MG/L
(MG/L
AS N)
AS N)
AS P)
(00610)
(00605)
(00665)
.020
<.010
.030
<.060
<.060
<.060
<.060
.020
.040
.030
.010
.020
.010
<.060
<.060
.040
.050
.020
.020
.060
.030
<.060
<.06u
<.060
<.060
<.060
<.060
.080
.23
.040
.100
.57
.060
.010
.010
.010
.020
.38
.040
.66
.010
.37
.040
.59
.040
.38
.030
.49
.060
.010
.010
1.1
.020
.75
.030
.48
.050
.58
.040
.24
.030
.37
.040
.010
.010
.010
.023
.010
.010
.22
.050
Tab
le 3
-.--
Wa
ter-
qu
alit
y d
ata
from
wells
an
d sp
rings
in
the
A
ust
in
urba
n st
udy
are
a C
ontin
ued
LOCAL
IDENT
IFIER
YD 58-42-809
YD 58-42-814
YD 58-42-913
YD 58-42-926
YD 58-49-604
YD 58-50-101
YD 58-50-206
YD 58-50-211
YD 58-50-215
YD-58-50-220
YD 58-50-401
YD 58-50-406
YD 58-50-403
YD-58-5C-412
YO 58-50-502
YD 58-50-704
YD-5S-50-705
YD-58-50-721
DATE
OFSAMPLE
83-07-18
83-07-18
83-07-18
83-05-21
83-05-22
83-05-23
83-05-25
33-07-18
83-07-22
83-07-19
83-07-19
83-07-19
83-07-19
83-05-21
83-05-23
63-07-22
83-07-19
83-07-19
83-07-19
83-07-20
83-07-20
83-05-21
83-05-22
83-05-23
83-05-25
83-05-21
83-05-23
HARD
NESS
(MG/L
ASCAC03)
(00900)
250
280
340 -- -- -- --
300
340
300
260
290
303
300
-- 310
320
310
300
240
250
-- -- -- -- __ --
HARD
NESS
/'NONCAR-
BONATE
(MG/L
CAC03)
(00902) 36 43 37 --
--
-- 39 35 37 20 32 19 54 -- 27 53 15 22 23 28 -- __ --
CALC
IUM
OIS-
SDLVEO
(MG/L
AS CA)
(00915)
TRAVIS
67 77
100
-- --
--
85 87 61 66
79 70
82--
35 88 75 33 69 71
----
__--
MAGNE
SIUM,
DIS
SOLVED
(MG/L
AS MG
)(00925)
19 22 21
--
21 31 35 23 23 30 24
--
23 25 31 23
17 17
--
--
SODIUM,
DIS
SOLVED
(MG/L
AS MA)
(00930)
3.6
7.9
6.3 --
-- --
--
9.1
7.4
7.1
8.0
12
9.3
1 2
--
6.7
17 3.
1
6.2
6.8
6.6 --
-- --
SODIUM
AD
SORP
TION
RATIO
(00931) .2 .2 .2 -- --
--
-- .2 .2 .2 .2 .3 .2 .3 .2 .4 .2 .2 .2 .2 -- --
_-
POTAS
SIUM,
DIS
SOLVED
(MG/L
AS lO
(00935)
1.1
1.1 .90
--
1.2
2.5
2.6
1 .4
1 .2
1 .3
1 .1 .90
1.0 .80
.70
1 .2
1 .2 -
---
ALKA
LINITY
FIELD
(MG/L
ASCAC03)
(00410)
210
240
300
260
260
270
270
260
310
2oO
2*0
2&0
230
250
260
280
270
300
280
220
220
250
250
250
250
260
260
SULFATE
DIS
SOLVED
(MG/L
AS S04)
(00945)
26 24
16
--
--
23 22 77 13 23
8.8
36
12 45 6.6
7.6
18 16
--
--
YO
58-5
0-8
10
53-0
7-2
0290
59
6133
382
.923
013
0
Tab
le 3
. W
ate
r-q
ua
lity
data
fr
om w
ells
an
d sp
rings
in
the
A
ust
in
urba
n st
udy
are
a-C
on
tinu
ed
LOCAL
IDENT
I
FIER
DATE
OF
SAMPLE
TIME
PUMP
OR FLOW
PERIOD
PRIOR
TO SAM
PLING
(MIN)
ARSENIC
DIS
SOLVED
(UG/L
AS AS
)
BARIUM/
DIS
SOLVED
(UG/L
AS 3A
)
CADMIUM
DIS
SOLVED
(UG/L
AS CD
)
CHRO
MIUM/
DIS
SOLVED
(UG/L
AS CR)
COPPER/
DIS
SOLVED
(UG/L
AS CU)
IRON/
DIS
SOLVED
(UG/L
AS FE)
LEAD/
DIS
SOLVED
(UG/L
AS PB)
(72004)
(01000)
(01005)
(01025)
(01030)
(01040)
(01046)
(01049)
TRAVIS
YD-58-50-220
YD-58-50-705
YD-53-50-721
33-05-21
83-05-23
83-05-21
83-05-23
83-05-21
83-05-23
YO-58-50-220
YD-58-50-705
YD-58-50-721
1130
0915
1135
1030
1105
0955
20 20 20 20 20 20
83-05-21
83-05-23
33-05-21
83-05-23
83-05-21
83-05-23
94
<100
100
<100
<100
300
510
130
230 10 10
96 10 30 40 10 20
Tab
le 9
.--W
ate
r-q
ua
lity
data
fr
om w
ells
an
d sp
rings
in
the
A
ust
in
urba
n st
udy
are
a C
ontin
ued
01 o
LOCAL
IDENT
I
FIER
LR-53-49-801
LR 53-49-903
LR 58-57-101
LR-58-57-202
LR 58-57-303
LR-58-57-402
LR-58-57-901
LR 58-58-105
LR 58-58-403
LR-58-53-406
LR-58-58-704
DATE
OFSAMPLE
83-07-22
63-07-20
83-07-20
83-07-21
83-07-21
83-07-21
63-07-22
83-07-21
83-07-22
83-07-25
83-07-21
TIME
0317
0830
1055
0950
1115
0835
1130
1330
1215
1140
1425
PUMP
OR FLOW
PERIOD
PRIOR
TO SAM
PLING
(MIN)
(72004) 25 25 30 20 20 25 30 25 30 20 20
DEPTH
OF
WELL/
TOTAL
(FEET)
(72008)
HAYS
100
200
123
200
315
330
575
477
390
525
532
DEPTH
BELOW
LAND
SURFACE
(WATER
LEVEL)
(FEET)
(72019)
44.80
19.40
94.00 --
140.00
SPE
CIFIC
CON
DUCT
ANCE
(UMHOS)
(00095)
671
603
654
667
590
o03
489
499
539
569
1060
PH
(STAND
ARD
UNITS)
(00400)
7.2
7.3
7.2
7.2
7.4
7.0
7.8
7.4
7.3
7.3
7.6
TEMPER
ATURE
(DEG C)
(00010)
21.5
23.5
24.5
23.0
26.5
24.0
24.0
23.0
2o.O
CCLI-
STREP-
FORM/
TOCOCCI
FECAL/
FECAL/
0.7
KF AGAR
UM-MF
(COLS.
(COLS./
PER
100 ML)
100 ML)
(31625)
(31673)
K2
K1
<1
K2
K3
K23
<1
K6
<1
52
<1
K9
K3
K21
25
73
<1
39
<1
<1
K7
K12
Tab
le 3
.--W
ate
r-qual ity
data
fr
om w
ells
an
d sp
rin
gs
in
the
A
ust
in
urba
n st
ud
y are
a C
ontinued
LOCAL
IDENT
IFIER
LR-58-49-801
LR 53-49-903
LR 58-57-101
LR-58-57-202
LR 58-57-303
LR-58-57-402
LR-58-57-901
LR 58-58-105
LR 58-58-403
LR-58-58-406
LR-58-58-704
DATE
OFSAMPLE
83-07-22
83-07-20
83-07-20
63-07-21
83-07-21
33-07-21
83-07-22
83-07-21
83-07-22
83-07-25
83-07-21
CHLO
RIDE,
DIS
SOLVED
(MG/L
AS CD
(00940)
13
8.7
9.8
14 14 14
9.0
12 12 12 93
FLUO-
RIOE,
DIS
SOLVED
(MG/L
AS F)
(00950)
.30
.20
.20
.30
.20
.30
.40
.40
.50
.30
3.8
SILICA,
DIS
SOLVED
(MG/L
ASSI02)
(00955)
HAYS 11 12 13 12 12 13 11 11 11 11 12
SOLIDS,
SUM OF
CONSTI
TUENTS,
DIS
SOLVED
(MG/L)
(70301)
3*0
340
360
380
330
350
270
270
320
310
620
NITRO
GEN/
N02+N03
TOTAL
(MG/L
AS N)
(00630)
.800
.700
.400
1.10
1.20
<.100
.500
1.60
1.40
1.60
<.100
NITRO
GEN,
NITRITE
TOTAL
(MG/L
AS N)
(00615)
<.020
<.020
<.020
<.020
<.020
<.020
<.020
<.020
<.020
<.020
<.020
NITRO
GEN/
AMMONIA
TOTAL
(MG/L
AS N)
(00610)
.040
.030
.030
.040
.040
.070
.080
.070
.060
.090
.510
NITRO
GEN,
ORGANIC
TOTAL
(MG/L
AS N)
(00605)
.76
.37
.47
.76
.76
.43
.22
.83
.54
.41
.49
PHOS
PHORUS,
TOTAL
(MG/L
AS P)
(00665)
.020
.020
.030
.010
.020
.030
.010
.020
.010
.010
.010
Tab
le 9.-
-Wate
r-qualit
y
data
fr
om w
ells
an
d sp
rin
gs
in
the A
ust
in
urba
n st
udy
are
a C
ontin
ued
LOCAL
IDENT
I
FIER
LR-53-49-801
LR 58-49-903
LR 58-57-101
LR-58-57-202
LR 58-57-303
LR-53-57-402
LR-5S-57-901
LR 58-53-105
LR 53-58-403
LR-58-58-406
i KJ LR-53-58-704
HARD-
HARD-
NESS/
DATE
NESS
NONCAR-
OF
(MG/L
BONATE
SAMPLE
AS
(MG/L
CAC03)
CAC03)
(00900)
(00902)
83-07-22
83-07-20
63-07-20
83-07-21
33-07-21
33-07-21
33-07-22
33-07-21
33-07-22
83-07-25
33-07-21
350
320
330
360
310
330
260
240
300
300
300
19 13
4
24 14 37 15 15 27 30 74
CALCIUM
DIS
SOLVED
(MG/L
AS CA)
(00915)
HAYS 95 93 99 38 81 65 56 60 76 77 59
MAGNE
SIUM/
DIS
SOLVED
(MG/L
AS MG
) (00925)
27 19 21 35 27 40 23 23 26 26 38
SODIUM
POTAS-
ALKA-
SODIUM,
AD-
SIUM/
LINITY
OIS-
SORP-
DIS-
FIELD
SOLVED
TION
SOLVED
(MG/L
(MG/L
RATIO
(MG/L
AS
AS NA
) AS
K)
CAC03)
(00930)
(00931)
(00935)
(00410)
6.4
5.3
6.1
6.9
7.4
7.2
5.6
6.7
6.5
6.5
97
.2 .1 .2 .2 .2 .2 .2 .2 .2 .2
2
1 .6 .60
.90
1.3 .80
2.9
1.2
1.4
1.3
1.3
7.4
330
310
330
340
300
290
240
230
270
270
230
SULFATE
DIS
SOLVED
(MG/L
AS S0
4)
(03945)
26
9.6
13 16 6.
5
30 1o 19 27 15
170
Tab
le 1
0.
Mo
nth
ly w
ate
r-le
vel
mea
sure
men
ts
of
ob
serv
atio
n w
ells
in
th
e
Aust
in
urba
n st
udy
are
a,
1983
w
ate
r ye
ar
\J
Distance b
elow
lan
d-su
rfac
eWe
l 1
number
YD-5
8-42-805 810
903
925
LR58 -49-801
YD-5
8-50
-101 211
K
213
00
216
217
301
412
517
704
801
LR-58-
57-201 302
Oct.
229.
50
198.
50
29.14
141.
50
38.30
-- 252.
40 y18
1.60
160.
30
192.
85
199.
90
132.
40
162.
10
__
Nov.
229.
50
192.
25
29.1
5
141.
75
205.
55
253.6
y 189.0
160.
70
195.
45
202.
50
129.
70
163.1
_
Dec.
228.90
190.
70
28.3
8
142.
10
37.5
0
176.
20
219.
25
252.
50
y 185.
90
161.
50
190.
60
197.
95
124.
40
171.
60
207.
40
Jan.
232.30
189.10
28.5
3
142.30
34.1
0
180.10
200.20
218.90
251.75
y 185.75
159.0
187.50
193.40
121.85
165.70
212.10
Feb.
234.20
187.40
31.6
9
141.55
34.1
0
175.00
184.80
218.80
247.70
87.15
183.60
160.85
175.30
115.10
163.85
_
Mar.
221.80
187.00
26.4
3
139.95
29.3
0
174.85
180.55
216.50
232.05
75.0
5
175.25
159.65
153.80
165.45
160.95
185.90
Apr.
226.90
187.30
26.64
139.15
35.6
5
177.35
193.60
217.
90
228.00
78.4
0
167.40
157.30
150.30
157.45
87.75
158.80
177.65
datu
m JY
eet)
May
226.80
187.
20
26.20
138.
90
31.80
176.
00
182.70
214.
65
230.
20
81.1
0
162.70
157.65
145.35
152.80
81.5
0
157.10
172.20
June
228.
00
187.45
30.04
138.55
35.7
0
199.10
225.44
77.7
0
157.35
158.
30
143.90
150.70
82.8
0
174.
10
July
Au
g
229.
187.70
187. 27.
139. 38.
179.
210.
217.
233.
116.
156.
158.
75
155.
Sept.
75 9 06 3 5 55 35 15
5 0 30
--
15
153.4
158.6
92.
158.
187.
85 7 95
Tab
le 1
(X M
onth
ly w
ate
r-le
vel
mea
sure
men
ts of
ob
serv
atio
n w
ells
in
th
e A
ust
in
urba
n st
udy
area
, 19
83
wat
er y
ear
I/ C
on
tinu
ed
Distance b
elow l
and-
surf
ace
Well number
Oct.
402
94.35
503
903
227.
55
58-101
130.
20
111
301
150.65
504
185.
30
Nov.
93.8
0
231.25
130.
9
151.
80
186.
55
Dec.
94.8
0
229.50
126.
60
180.90
153.
20
186.
85
Jan.
92.70
134.
90
229.
05
130.30
179.
80
154.05
188.60
Feb.
92.50
131.
50
226.00
120.
85
174.20
154.
40
186.45
Mar.
93.50
99.80
97.60
160.35
153.
40
180.50
Apr.
91.50
103.35
212.50
91.25
153.
36
150.30
173.15
datum
(fee
t)May 92.0
0
102.85
204.45
105.
50
139.
10
146.
12
168.
10
June
July
93.
109.
207. 85.
140.
142.
164.
60
93.0
80 95 95 60 95
141.
1
70
Aug
120.
134.
201.
105.
150.
143.
164.
Sept
.
8 6 15 8 75 4 14
0.45
80
I/
All
mea
sure
men
ts
wer
e m
ade
durin
g th
e la
st
wee
k o
f th
e m
onth
. Se
e ta
ble
7
for
a listing
of
wate
r-le
vel
mea
sure
men
ts o
f a
dd
itio
na
l w
ells
mad
e fo
r th
e a
nnua
l w
ate
r-le
vel
surv
ey.
2/
Wel
l d
ry.