Drought in Upper Colorado Basin Solaleh Khezri GIS

Drought in Upper Colorado Basin Solaleh 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

5000 4000 3000 2000 1000 0 0 Inflow (cfs) 3000 2000 Inflow (cfs) 4000 0 10/1/2000 3/1/2001 8/1/2001 1/1/2002 6/1/2002 11/1/2002 4/1/2003 9/1/2003 2/1/2004 7/1/2004 12/1/2004 5/1/2005 10/1/2005 3/1/2006 8/1/2006 1/1/2007 6/1/2007 11/1/2007 4/1/2008 9/1/2008 2/1/2009 7/1/2009 Inflow (cfs) 6000 7000 5000 6000 1000 Navajo Reservoir 7000 6000 10/1/2000 3/1/2001 8/1/2001 1/1/2002 6/1/2002 11/1/2002 4/1/2003 9/1/2003 2/1/2004 7/1/2004 12/1/2004 5/1/2005 10/1/2005 3/1/2006 8/1/2006 1/1/2007 6/1/2007 11/1/2007 4/1/2008 9/1/2008 2/1/2009 7/1/2009 Inflow (cfs) Crystal Reservoir Taylor Park 5000 4000 3000 2000 1000 0 Blue Mesa Reservoir 7000 6000 5000 4000 3000

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 Morrow Point's Inflow Index Taylor Park's Inflow Index 3, 8 2, 8 1, 8 0, 8 -0, 2 -1, 2 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep -0, 2 -1, 2 -2, 2 -3, 2 -4, 2 Crystal 's Inflow Index 3, 8 2, 8 1, 8 0, 8 -1, 2 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Navajo's Inflow Index 3, 8 -0, 2 Oct Nov Dec Jan Feb Mar Apr May Jun -0, 2 -1, 2 -2, 2 -3, 2 -4, 2 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep