7997

• UCREFRP Catalog Number: 7997
• Author: Nash, L. L. and P. H. Gleick.
• Title: The Colorado River Basin and Climatic Change, The Sensitivity of Streamflow and Water Supply to Variations in Temperature and Precipitation.
• USFW Year: 1993.
• USFW - Doc Type: EPA 230-R-93-009,
• Copyright Material: NO

LIST OF TABLES

Table 1: Hypothetical climate scenarios used in regional hydrologic studies....;.................................. 7

Table 2: Changes in temperature and precipitation in the Colorado River Basin
predicted by general circulation models................................................................................... 10

Table 3: Summary of calibration results for the NWSRFS modeL....................................................... 15

Table 4: Climate change scenarios used in the NWSRFS mode!.......................................................... 20

Table 5: Annual inflow into Lake Powell (Two-elevation model) for all scenarios................................. 22

Table 6: Annual streamflow of the White River for all scenarios............................................................ 23

Table 7: Annual streamflow of the East River for all scenarios.............................................................. 24

Table 8: Annual streamflow of the Animas River for all scenarios......................................................... 25

Table 9: Changes in runoff generated by GCMs and the NWSRFS hydrologic mode!........................ 33

Table 10: Impacts of climatic change on runoff in semi-arid basins........................................................ 36

Table 11: Scheduled demands used by the Bureau of Reclamation in the CRSS model...................... 45

Table 12: Description of input sequences used in the CRSS model....................................................... 50

Table 13: Annual runoff of the Green River at Green River, Wyoming.................................................... 54

Table 14: Annual runoff of the Colorado River at Lees Ferry .................................................................. 55

Table 15: Annual runoff of the Colorado River above Imperial Dam....................................................... 55

Table 16: Major reservoirs in the Colorado River Basin............................................................................ 57

Table 17: Storage in Flaming Gorge reservoir on August 1 for various scenarios................................. 59

Table 18: Storage in Lake Powell on August 1 for various scenarios...................................................... 59

Table 19: Storage in Lake Mead on August 1 for various scenarios....................................................... 60

Table 20: Percent frequency with which scheduled deliveries to MWD, CAP, and Mexico

are met............................................................................................................................. ............ 66

Table 21: Annual runoff at various points for the base case and the time-shifted scenario.................. 72

Table 22: Sensitivity of water-supply variables to changes in natural flow in the Colorado

River Basin..... .............. ...... .......... ......... ...... ......... ................... .................... .... ... ........... ............... 76

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