CBRFC May 2009 Water Supply Webinar 1pm MDT, May 7, 2009 Brent Bernard These slides: Outline April Weather Review Snow States Current Weather, Climate & Forecasts Water Supply Forecasts Web Reference: Web Reference: Current Snow Water Equivalent Conditions Web Reference :http://www.cbrfc.noaa.gov/gmap/gmap.php Bear and Hams Fork Drainage 7-9k average to above average SWE Majority of GB, UC and Lower GN 7-9k SWE is below average. San Juan and Lower GB 9-10k Are below to Much below average SWE ~ 7-9K Feet SWE ~ 9-10k Feet The current upper elevation San Juan Snowpack is below to much below average. The current >10k ft. snowpack is average to above average in the UC and Eastern Green River Basin. Overall SWE Above Feet Elevation Website Link Reference:http://www.cbrfc.noaa.gov/station/sweplot/sweplot.cgi?yrList=avg&yrList=2009&yrList=2008&yrList=1998&stationList=TRLU1&monly=0&tavg=s&hsim= sknn&index=&dbsvr=&indextitle=Untitled Bear River, Weber River, Provo River Headwater SWE Peak SWE ~ 108% Website Link Reference:http://www.cbrfc.noaa.gov/station/sweplot/sweplot.cgi?yrList=avg&yrList=2009&yrList=2008&yrList=1995&stationList=MLDU1&monly=0&tavg=s&hsim =sknn&index=&dbsvr=&indextitle=Untitled Upper Colorado River Headwaters ~ SWE Peak SWE 2009 ~ 115% Website Linkmonly=0&tavg=s&hsim=sknn&index=&dbsvr=&indextitle=Untitled Northern Great Basin SWE Peak SWE ~ 115% Website Linkavg s.0.png San Juan Basin SWE Peak SWE ~ 98% Website LinkPeak SWE ~ 105% Green River Headwaters SWE First 7 days of May ~ Precipitation Web Reference:Departure from normal was 2 inches in the upper elevations regions Forecast Precipitation Web References:and Short Term Temperature Forecasts No Large Ridge Building Forecast, through May 20, Slow Steady Melts are the norm with these conditions May, June, July Precip. Outlook May Precipitation Outlook Climate Forecasts CBRFC Online Publications May 2009 Web Reference:Web Publications Evolution Plots Median Forecasts Exceedance Probabilities Upper Colorado Groups - Median Forecast Gunnison & Dolores River Basins ~ Specifics Median Gunnison, 95% Avg. Median Dolores, 80% Avg. San Juan Basin Median Forecasts Median May, April Through July Forecast 85% of Average Green River Group ~ Median Forecasts Virgin River Basin Median Forecasts Great Salt Lake Basin Median ForecastsMedian Bear River, 98% Avg. Median Weber Basin, 106% Avg. Great Salt Lake Basin Cont n Forecast Six Creeks,108% Forecast Utah Lake,102% Beta Water Supply Map San Juan ~ Navajo Reservoir690kaf Little Snake River ~ Nr Lily490kaf Green River Basin Warren Bridge250kaf Gunnison Blue Mesa Res.690kaf Colorado River Lake Powell 7300kaf Weber River at Oakley 131kaf More Resources No June webinar scheduled Is there interest? Fall webinar will be scheduled to review this year s forecasts, evaluate historical forecasts, and discuss the upcoming forecasts and improvements Brent Bernard CBRFC Hydrologist Kevin Werner Service Coordination Hydrologist Phone: Feedback, Questions, Concerns always welcome.