Drought in Upper Colorado Basin
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Transcript of Drought in Upper Colorado Basin
Drought in Upper Colorado BasinSolaleh Khezri, GIS in Water Resources, University of Texas, Fall 2009
Upper Colorado River Basin
Upper Colorado Basin Reservoirs
Hydro Excel
Generation of Graphs in Hydro Excel
10/1/2000 6/1/2002 2/1/2004 10/1/2005 6/1/2007 2/1/20090
1000
2000
3000
4000
5000
6000
7000
Taylor Park
Inflo
w (c
fs)
10/1/2000 3/1/2002 8/1/2003 1/1/2005 6/1/2006 11/1/2007 4/1/20090
1000
2000
3000
4000
5000
6000
7000
Navajo Reservoir
Inflo
w (c
fs)
10/1/2000 6/1/2002 2/1/2004 10/1/2005 6/1/2007 2/1/20090
1000
2000
3000
4000
5000
6000
7000
Blue Mesa Reservoir
Inflo
w (c
fs)
10/1/2000 6/1/2002 2/1/2004 10/1/2005 6/1/2007 2/1/20090
1000
2000
3000
4000
5000
6000
Crystal ReservoirIn
flow
(cfs
)
Drought Indices
• Palmer Drought Severity Index :Indicator of soil moisture
• Surface Water Supply Index: based on snowpack, streamflow, precipitation, and reservoir storage.
• Drought Monitor: Combination of indices, including the PDSI, Soil Moisture Model, Standardized Precipitation Index (SPI), USGS weekly streamflow percentiles, etc.
Reservoirs Monthly Inflow Index-2002
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
-4.2
-3.2
-2.2
-1.2
-0.2
0.8
1.8
2.8
3.8
Morrow Point's Inflow Index
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
-4.2
-3.2
-2.2
-1.2
-0.2
0.8
1.8
2.8
3.8
Taylor Park's Inflow Index
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
-4.2
-3.2
-2.2
-1.2
-0.2
0.8
1.8
2.8
3.8
Crystal 's Inflow Index
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
-4.2
-3.2
-2.2
-1.2
-0.2
0.8
1.8
2.8
3.8
Navajo's Inflow Index
JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Monthly Inflow Index Maps-2002
Monthly Drought Monitor-2002
What to do next?
• Calculate Inflow Index for 8 years• Create Inflow Index maps