DWR_4151799 - Laserfiche WebLink

. . I . YAMPA/WHITE BASIN • Basinwide Conditions Assessment: I The SWSI value of -2.3 indicates that the current SURFACE WATER SUPPLY INDEX conditions are considerably below normal. It is the lowest s """""" - value computed for any basin in the state. Snowpack ,- measured 78% of average on March 1, 1991. Precipitation h _ -=` I s basinwide was 73%of normal for the month,but is still 102% 3 t. Z of normal for the water year. Flow at the key gaging station, 2- - : - 1 Yampa River at Steamboat, could not be determined due to - loss of hydrographic control. Streamflow was generally low 1 o due to scarcityof low elevation snowpack and resultinglow �`'` - k="�'' runoff. Storage is being added to the extent possible at '` - Yamcola Reservoir and Stagecoach Reservoir. Irrigation `' reservoir storage continues to show slight improvement while -'- �_ ; ` the other reservoirs are near capacity. Storage in the .....:......\.... JAJ l .Ate .MI167 JAMM JAMS .LIMOS JAM7 JAWS JAMS JAMGO JANY1 irrigation reservoirs was depleted last year to supplement .,,,„,.,W, below average streamflow. Outlook: There are strong indications that the runoff will be insufficient to fill the irrigation reservoirs this year, and there may be some shortages of irrigation water. The streamflow forecast is lowest in the Little Snake River drainage at only 47% of average and highest in the Yampa River drainage above Stagecoach Reservoir at 77% of average. Administrative/Managsment Concerns: Water demands will remain low for the next 60 days requiring only normal administration of water rights. However, administration on the Upper Yampa River basin is likely to occur earlier than normal in the irrigation season. Public Use Impacts: Decreasing streamflows will impact water recreational uses such as rafting. Recreational uses of Stagecoach and Steamboat Reservoirs should not be impacted. 8