Wyoming Water Supply Outlook---issued March 11, 2011

Well above normal spring and summer runoff volumes are expected for the Upper and Lower North Platte, the Little Snake, the Laramie, and the Upper Bear Drainages…

...Normal to above normal spring and summer runoff volumes are forecasted for the rest of Wyoming's major watersheds...

Mountain snowpack (as of early March) across Wyoming continues to be above normal at 110 - 120 percent of average. Snowpack "water" numbers and/or snow water equivalent (SWEs) figures at the beginning of March were the highest across southern Wyoming--with 120 to 140 percent of normal.  SWEs across the rest of Wyoming varied from 100 to 120 percent of normal.

Near normal to well above normal (90 to 125 percent) snowmelt streamflow volumes are expected across the almost every major drainage basin across Wyoming.   

The Upper and Lower North Platte Basins are expected to see well above average streamflow volumes (130 to 145 percent of normal) during the spring and summer runoff. 

The latest Wyoming water supply outlook graphic:



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