Surface Water Balance in the Pecos River Basin Pecos River, near Langtry, Val Verde County, Texas...
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Transcript of Surface Water Balance in the Pecos River Basin Pecos River, near Langtry, Val Verde County, Texas...
Surface Water Balance in the Pecos River Basin
Pecos River, near Langtry, Val Verde County, Texas
Sedat Yalcinkaya
April 28, 2010
Surface Water Balance in the Pecos River Basin
Too much water but not when and where it is needed!
IPCC report “Climate Change and Water”, 2008
UN Millennium Development Goals “Food and Water Security”
The EU Water Framework Directive - Integrated River Basin Management for Europe
Water Resources Planning and Management
Surface Water Balance in the Pecos River Basin with ArcGIS
Runoff Analysis in the study area Application of WEAP
All the calculations were made for 1990 except runoff analysis
Study AreaLegend
Main_BASIN_Rivers
Orig_RioGrand_Total
Waterbody1
Watershed_Pecos
Basin_States<all other values>
NAME
CHIHUAHUA
COAHUILA
COLORADO
DURANGO
NEW MEXICO
NUEVO LEON
TAMAULIPAS
TEXAS
State_TX
Ü0 110 220 330 44055Miles
TEXAS
COLORADO
NEW MEXICO
CHIHUAHUA
COAHUILA
DURANGO
TAMAULIPAS
NUEVO LEON
WATERSHEDS (HUC_8) AREA (KM2)
13070001 6454.582529
13070003 2913.223075
13070004 5074.004481
13070005 1831.660091
13070006 3833.113807
13070007 16414.37423
13070008 4962.616022
13070009 2505.34438
13070010 1997.452143
13070011 2828.999238
13070012 2573.636942
TOTAL BASIN AREA 51389.006960
33.02 and 29.69 N Latitude104.65 and 101.14 W Longitude
Data Sources
CRWR Database NRCS, Geospatial Data Gateway NHDPlus NCDC NASA, Land Data Assimilation System
Processing the Climate Data
32 km cell size
Processing the Soil DataLayer Thickness Depth to Top
Depth to Bottom
1 5 cm (2 in) 0 cm (0 in) 5 cm (2 in)
2 5 cm (2 in) 5 cm (2 in) 10 cm (4 in)
3 10 cm (4 in) 10 cm (4 in) 20 cm (8 in)
4 10 cm (4 in) 20 cm (8 in) 30 cm (12 in)
5 10 cm (4 in) 30 cm (12 in) 40 cm (16 in)
6 20 cm (8 in) 40 cm (16 in) 60 cm (24 in)
7 20 cm (8 in) 60 cm (24 in) 80 cm (31 in)
8 20 cm (8 in) 80 cm (31 in) 100 cm (39 in)
950 cm (20 in)
100 cm (39 in)
150 cm (59 in)
1050 cm (20 in)
150 cm (59 in)
200 cm (79 in)
1150 cm (20 in)
200 cm (79 in)
250 cm (98 in)
First Bucket
Second Bucket
The resolution is 1/8 degree (~140 km2 per grid cell)
Simple Surface Water Balance with ArcGIS
outi QQEPdt
ds
P= PrecipitationE= EvaporationQ= Naturalized Flows
Precipitation and Evaporation
1307
0001
1307
0003
1307
0004
1307
0005
1307
0006
1307
0007
1307
0008
1307
0009
1307
0010
1307
0011
1307
0012
0
100
200
300
400
500
600
700
Sub Watershed
An
nu
al P
reci
pit
atio
n,
mm
Janu
ary
Febru
ary
Mar
chApr
ilM
ayJu
ne July
Augus
t
Septe
mbe
r
Octob
er
Novem
ber
Decem
ber
0
20
40
60
80
100
120
Months
Pre
cip
itat
ion
, m
m
1307
0001
1307
0003
1307
0004
1307
0005
1307
0006
1307
0007
1307
0008
1307
0009
1307
0010
1307
0011
1307
0012
0
50
100
150
200
250
300
350
400
Sub Watershed
An
nu
al E
vap
ora
tio
n,
mm
Janu
ary
Febru
ary
Mar
chApr
ilM
ayJu
ne July
Augus
t
Septe
mbe
r
Octob
er
Novem
ber
Decem
ber
0
10
20
30
40
50
Months
Eva
po
rati
on
, m
m
Water Balance
Janu
ary
Febru
ary
Mar
chApr
ilM
ayJu
ne July
Augus
t
Septe
mbe
r
Octob
er
Novem
ber
Decem
ber
0
1000
2000
3000
4000
5000
6000
Precipitation
Evaporation
Net Outflow
Months
Vo
lum
e, M
m3
Janu
ary
Febru
ary
Mar
chApr
ilM
ayJu
ne July
Augus
t
Septe
mbe
r
Octob
er
Novem
ber
Decem
ber
-1000
-500
0
500
1000
1500
2000
2500
3000
3500
4000
Months
Ch
ang
e in
Sto
rag
e, M
m3
It is likely that considerable amount of water was stored in the reservoirs exist along the basin.
Runoff Analysis
Janu
ary
Febru
ary
Mar
chApr
ilM
ayJu
ne July
Augus
t
Septe
mbe
r
Octob
er
Novem
ber
Decem
ber
0
10
20
30
40
50
60
Months
Vo
lum
e, M
m3
Rainfall vs Runoff
0 20 40 60 80 100 1200
0.2
0.4
0.6
0.8
1
1.2
1.4
f(x) = 0.241547965848808 exp( 0.0131780198918695 x )R² = 0.512639208424478
Rainfall, mm/month
Ru
no
ff,
mm
/mo
nth
For example; for a 40 mm rainfall can cause a 0.4 mm runoff
Hydrologic Modeling with WEAP
Adding Data to WEAP
WEAP Results0 \ Headflow 1 \ Catchment Inflow Node 12 \ Reach 3 \ tributary 7 Inflow4 \ Reach 5 \ tributary 6 Inflow6 \ Reach 7 \ tributary 5 Inflow8 \ Reach 9 \ Catchment Inflow Node 910 \ Reach 11 \ Tributary 4 Inflow12 \ Reach 13 \ tributary 3 Inflow14 \ Reach 15 \ Catchment Inflow Node 616 \ Reach 17 \ tributary 2 Inflow18 \ Reach 19 \ Tributary 1 Inflow20 \ Reach 21 \ Catchment Inflow Node 1122 \ Reach
Streamflow (below node or reach listed)Scenario: Reference, All months, River: Main River
Jan1990
Feb1990
Mar1990
Apr1990
May1990
Jun1990
Jul1990
Aug1990
Sep1990
Oct1990
Nov1990
Dec1990
Milli
on C
ubic
Met
er
3,800
3,600
3,400
3,200
3,000
2,800
2,600
2,400
2,200
2,000
1,800
1,600
1,400
1,200
1,000
800
600
400
200
0
Surface Runoff Precipitation Interflow Increase in Soil MoistureEvapotranspiration Decrease in Soil MoistureBase Flow
Land Class Inflow s and Outflow sScenario: Reference, All months
Jan1990
Feb1990
Mar1990
Apr1990
May1990
Jun1990
Jul1990
Aug1990
Sep1990
Oct1990
Nov1990
Dec1990
Milli
on C
ubic
Met
er
5,500
5,000
4,500
4,000
3,500
3,000
2,500
2,000
1,500
1,000
500
0
-500
-1,000
-1,500
-2,000
-2,500
-3,000
-3,500
-4,000
-4,500
-5,000
-5,500
Conclusion 1990 values in mm
Precipitation Evaporation Runoff
Mean 35.4525 21.06 0.46
Max 107.9 43.92 1.2
Min 5.76 4.88 0.18 Most of the precipitation occurs in July,
August and September Precipitation gets the lowest level in winter Maximum evaporation occurs in August,
September and October Maximum runoff occurs in September and
October The water balance for 1990 indicates
shortage of water in May, June and December.
Questions??