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 :

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: sknn&index=&dbsvr=&indextitle=Untitled Bear River, Weber River, Provo River Headwater SWE Peak SWE ~ 108%

Website Link Reference: =sknn&index=&dbsvr=&indextitle=Untitled Upper Colorado River Headwaters ~ SWE Peak SWE 2009 ~ 115%

Website Link monly=0&tavg=s&hsim=sknn&index=&dbsvr=&indextitle=Untitled Northern Great Basin SWE Peak SWE ~ 115%

Website Link avg s.0.png San Juan Basin SWE Peak SWE ~ 98%

Website Link Peak 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

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 Forecasts Median 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 Reservoir 690kaf

Little Snake River ~ Nr Lily 490kaf

Green River Basin – Warren Bridge 250kaf

Gunnison – Blue Mesa Res kaf

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….