Initial Wyoming Water Supply Outlook---January 12, 2011

...Normal to above normal spring and summer runoff volumes expected over a majority of Wyoming's major watersheds...

...Below normal water supply numbers are forecasted over the Powder and Tongue Watersheds...

Mountain snowpack across Wyoming is generally above normal at 110 - 120 percent of normal. Snowpack "water" numbers and/or snow water equivalent (SWEs) figures at the beginning of January were the highest across southern Wyoming--with 130 to 140 percent of normal.  SWEs across the rest of Wyoming varied from 90 to 120 percent of normal.

Normal to above normal (97 to 140 percent) snowmelt streamflow volumes are expected across major basins across western, central, and southern Wyoming.  

Major watersheds across north central Wyoming, to include the Powder, the Big and Little Goose Creek, and the Tongue basin are are expected to see below average snowmelt streamflow volumes. (75 to 85 percent of normal)

 The latest Wyoming water supply outlook graphic:


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