3,562 wells 1,417 wells 249 wellsmbmggwic.mtech.edu/gwcpmaps/gwof21_2untiled.pdf · Water...
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900 2,020 1,160 280 370 Irrigation Public water supply Self-supplied domestic Industrial Livestock Commercial Domestic Irrigation Public water supply Industrial Stockwater Unused Other ! ! ! ! ! ! ! ! ! ! ! ! ! Lakes Streams ! Cities and towns Study area County boundaries Legend: Maps B through F Generalized geology Alluvium along major streams Glacial deposits Tertiary basin fill Map A. The number of wells per section <100 ft deep as of January 2005 Number of wells records per section: NO OU TLINE 0 1 - 10 11 - 30 31 - 50 51 - 80 81 - 160 GEOR GETOWN LAKE Montana Bureau of Mines and Geology A Department of Montana Tech of The University of Montana Ground-Water Open-File Report 21, Sheet 2 November, 2007 Sheet 2. The number of wells per section that are <100 ft deep and wells within 1 mile of major streams. Map B. Locations of wells <100 ft deep within 1 mile of major streams Map C. Locations of wells between 100 and 300 ft deep within 1 mile of major streams Map D. Locations of wells >300 ft deep within 1 mile of major streams Individual wells by total depth: Map E. Irrigation wells within 1 mile of major streams Map F. Commercial, industrial, and public water supply wells within 1 mile of major streams Statistics for Wells in the Upper Clark Fork River Ground-Water Characterization Area General distribution of wells by use 0 - 100 ft Between 100 and 300 ft 300 - 2,000 ft Estimated consumptive use of ground-water (Acre-ft per year, Deer Lodge, Granite, Powell, and Silver Bow Counties) Source: Cannon and Johnson, 2004 . 0 10 20 5 Miles . . . . 0 10 20 5 Miles . 0 10 20 5 Miles Explanation The number of wells per section shown in Map A is for January 1, 2005, so the data are comparable to Maps E and H on Sheet 1. The data for Maps B through F were retrieved from the Montana Ground-Water Information Center (GWIC) database in September 2006. Consequently, the total number of wells in the Upper Clark Fork River Ground- Water Characterization Area is shown as 6,909 wells (Table 1, far right), compared to the earlier total of 6,828 wells shown for January 1, 2005 on Sheet 1, Map E. Map A illustrates the number of wells <100 ft deep per Public Land Sur- vey System (PLSS) section within the study area. Maps B through D illustrate individual wells of specific depth inter- vals located within 1 mile of major streams. Maps E and F show the distribution and depths of irrigation, commercial, industrial, and public supply wells located within 1 mile of major streams. References Montana Ground-Water Information Center, Montana Bureau of Mines and Geology, Montana Tech of The University of Montana (http://mbmggwic.mtech.edu/). Natural Resource Information System, Montana State Library, for base map coverages (http://nris.mt.gov/). Cannon, M.R., and Johnson, D.R., 2004, Estimated water use in Montana in 2000: US Geological Survey Scientific Investigations Report 2004-5223, 50 p. by Kirk B. Waren and Thomas W. Patton 85% 3% 2% 1% 6% 1% 1% SCALE 1:792,000 Sixty-three percent of the 6,909 well records for the Upper Clark Fork Ground-Water Characterization Area are for relatively shallow wells, <100 ft deep (Map A). Seventy-six percent of all well records are within 1 mile of a major stream (Maps B through D). Fifty-two percent of all well records are both shallow (<100 ft deep) and within 1mile of a stream (Map B). The numbers of higher yield wells for uses such as irrigation, commercial, industrial, and public water supplies that are within 1 mile of streams are modest compared to similar numbers for all water uses (Maps E and F). 0 10 20 5 Miles SCALE 1:792,000 Eighty-five percent of well records in the Upper Clark Fork Ground-Water Characterization Area are for domestic use wells (see the statistics at far right). Estimates of consumptive use by the US Geological Survey provides another per- spective. The total estimated consumptive use of ground water for Deer Lodge, Granite, Powell, and Silver Bow Counties is about 4,730 acre-ft per year. The total amount of water withdrawn from both surface and ground-water sources annually in these counties is about 544,170 acre-ft. For comparison, the average annual runoff of the Clark Fork River below Missoula is about 3,870,000 acre-feet. Further work might combine water use estimates with specific well locations to determine areas where streamflow may be significantly impacted by ground-water use, and whether such impacts conflict with other uses. 3,562 wells 249 wells 1,417 wells SCALE: 1:1,000,000 SCALE: 1:1,000,000 Legend 0 10 20 5 Miles SCALE 1:792,000 0 10 20 5 Miles SCALE 1:792,000 Clark Fk. Number of wells by selected use, proximity to streams, and depth P O W E L L Drummond Philipsburg Deer Lodge Warm Springs Anaconda Butte Walkerville Ovando G R A N I T E D E E R L O D G E S I L V E R B O W 1% Clark Fk. Ground-Water Resource Development in the Upper Clark Fork River Ground- Water Characterization Area, Deer Lodge, Granite, Powell, and Silver Bow Counties, Montana Bedrock 199 wells 202 wells Table 1. All wells Wells within 1 mile Wells within 1 mile of major streams of major streams and less than or equal to 100 ft deep All uses 6,909 5,228 3,562 Commercial 47 40 29 Domestic 5,702 4,316 2,915 Irrigation 233 199 130 Public water supply 159 127 91 Industrial 47 35 23 Stockwater 375 223 172 Unused 75 54 34 Other 64 54 44
Transcript of 3,562 wells 1,417 wells 249 wellsmbmggwic.mtech.edu/gwcpmaps/gwof21_2untiled.pdf · Water...
900
2,020
1,160
280370 Irrigation
Public water supply
Self-supplieddomesticIndustrial
Livestock
Commercial
Domestic
Irrigation
Public watersupplyIndustrial
Stockwater
Unused
Other
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LakesStreams
! Cities and townsStudy areaCounty boundaries
Legend: Maps B through FGeneralized geology
Alluvium along major streamsGlacial depositsTertiary basin fill
Map A. The number of wells per section <100 ft deep as of January 2005
Number of wells recordsper section:
NO OUTLINE 0
1 - 1011 - 3031 - 5051 - 8081 - 160
GEORGETOWN LAKE
Montana Bureau of Mines and GeologyA Department of Montana Tech of The University of Montana
Ground-Water Open-File Report 21, Sheet 2 November, 2007
Sheet 2. The number of wells per section that are <100 ft deep and wells within 1 mile of major streams.
Map B. Locations of wells<100 ft deep within 1mile of major streams
Map C. Locations of wellsbetween 100 and 300 ftdeep within 1 mile of major streams
Map D. Locations of wells>300 ft deep within 1mile of major streams
Individual wellsby total depth:
Map E. Irrigation wells within 1 mile of major streams
Map F. Commercial, industrial, and public
water supply wells within 1 mile of major streams
Statistics for Wells in the Upper Clark Fork River Ground-Water Characterization Area
General distribution of wells by use
0 - 100 ftBetween 100 and 300 ft300 - 2,000 ft
Estimated consumptive use of ground-water(Acre-ft per year, Deer Lodge, Granite, Powell, and Silver Bow Counties) Source: Cannon and Johnson, 2004
.0 10 205
Miles
. . .
. 0 10 205Miles
. 0 10 205Miles
ExplanationThe number of wells per section shown in Map A is for January 1, 2005, so the data are comparable to Maps E and H on Sheet 1. The data for Maps B through F were retrieved from the Montana Ground-Water Information Center (GWIC) database in September 2006. Consequently, the total number of wells in the Upper Clark Fork River Ground-Water Characterization Area is shown as 6,909 wells (Table 1, far right), compared to the earlier total of 6,828 wells shown for January 1, 2005 on Sheet 1, Map E. Map A illustrates the number of wells <100 ft deep per Public Land Sur-vey System (PLSS) section within the study area. Maps B through D illustrate individual wells of specific depth inter-vals located within 1 mile of major streams. Maps E and F show the distribution and depths of irrigation, commercial, industrial, and public supply wells located within 1 mile of major streams.
ReferencesMontana Ground-Water Information Center, Montana Bureau of Mines and Geology, Montana Tech of The University of Montana (http://mbmggwic.mtech.edu/).Natural Resource Information System, Montana State Library, for base map coverages (http://nris.mt.gov/).Cannon, M.R., and Johnson, D.R., 2004, Estimated water use in Montana in 2000: US Geological Survey Scientific Investigations Report 2004-5223, 50 p.
by Kirk B. Waren and Thomas W. Patton
85%
3%2%
1% 6%1%1%
SCALE 1:792,000
Sixty-three percent of the 6,909 well records for the Upper Clark Fork Ground-Water Characterization Area are for relatively shallow wells, <100 ft deep (Map A). Seventy-six percent of all well records are within 1 mile of a major stream (Maps B through D). Fifty-two percent of all well records are both shallow (<100 ft deep) and within 1mile of a stream (Map B). The numbers of higher yield wells for uses such as irrigation, commercial, industrial, and public water supplies that are within 1 mile of streams are modest compared to similar numbers for all water uses (Maps E and F).
0 10 205Miles
SCALE 1:792,000
Eighty-five percent of well records in the Upper Clark Fork Ground-Water Characterization Area are for domestic use wells (see the statistics at far right). Estimates of consumptive use by the US Geological Survey provides another per-spective. The total estimated consumptive use of ground water for Deer Lodge, Granite, Powell, and Silver Bow Counties is about 4,730 acre-ft per year. The total amount of water withdrawn from both surface and ground-water sources annually in these counties is about 544,170 acre-ft. For comparison, the average annual runoff of the Clark Fork River below Missoula is about 3,870,000 acre-feet. Further work might combine water use estimates with specific well locations to determine areas where streamflow may be significantly impacted by ground-water use, and whether such impacts conflict with other uses.
3,562 wells 249 wells1,417 wells
SCALE: 1:1,000,000 SCALE: 1:1,000,000
Legend
0 10 205Miles
SCALE 1:792,000
0 10 205Miles
SCALE 1:792,000
Clark Fk.
Number of wells by selected use, proximity to streams, and depth
P O W E L LDrummond
Philipsburg Deer Lodge
Warm Springs
Anaconda
ButteWalkerville
Ovando
G R A N I T E
D E E R L O D G E
S I L V E R B O W
1%
Clark Fk.
Ground-Water Resource Development in the Upper Clark Fork River Ground-Water Characterization Area, Deer Lodge, Granite, Powell, and Silver Bow Counties, Montana
Bedrock
199 wells 202 wells
Table 1.
All wells Wells within 1 mile Wells within 1 mile of major streams of major streams
and less than or equalto 100 ft deep
All uses 6,909 5,228 3,562Commercial 47 40 29Domestic 5,702 4,316 2,915Irrigation 233 199 130Public water supply 159 127 91Industrial 47 35 23Stockwater 375 223 172Unused 75 54 34Other 64 54 44
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