April Wyoming Water Supply Outlook

...Wyoming Snow Water Equivalents (SWEs) are at 102 percent of average...

...Near normal inflows expected into Boysen Reservoir this summer...

...Above normal water supply numbers continue to be forecasted over the Snake, Upper Yellowstone, Upper Bear, Powder, Tongue, Little Snake, and Laramie Watersheds...

 ...Below normal snowmelt runoff volumes continue to be expected over the Upper Green, Lower Green, and Sweetwater Drainages...

Snowpack "water" numbers and/or snow water equivalents (SWEs) were averaging near 100 percent of normal by throughout March across Wyoming.  By early April, the SWEs across the state increased to 102 percent of normal.  

The biggest increase in April’s water supply forecast is the inflow forecast into Boysen Reservoir.   The latest forecast calls for near normal summer snowmelt streamflows (98 percent of average) along the Wind River above Boysen Reservoir--a 20 to 25 increase from March’s prediction.

Above normal streamflow volumes are still expected for a majority of Wyoming’s major watersheds.  The Little Snake Basin’s snowmelt runoff volumes are expected to be 130 percent of average.

The Upper Green, Lower Green, and Sweetwater Watershed’s water supply forecasts continue to point to below average snowmelt streamflow volumes.

 The latest Wyoming water supply outlook graphic:

 

 

 

 



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