Initial Wyoming Water Supply Outlook---January 15, 2014

 

…Wyoming December precipitation was nearly 120 percent of average...

...Current water year precipitation is averaging nearly 135 percent of normal across Wyoming…

…Mountain snowpack across Wyoming is 115 to 120 percent of average... 

Near normal streamflow volumes are expected across major basins in Wyoming...

…Wyoming reservoir storages are 85 to 90 percent of average for January…

December precipitation totals Wyoming were nearly 120 percent of average. Precipitation numbers varied between 215 percent of normal over the Powder River Basin to near 45 percent of normal over the Crow/Lodgepole Creek Drainages (Southeast Wyoming).  Current water year (October-December 2013) precipitation across Wyoming is nearly 135 percent of average.

Mountain snowpack across Wyoming was 115 to 120 percent of normal by early January.  Snowpack "water" numbers and/or SWEs were the highest across northeastern Wyoming—varying between 140 to 165 percent of average.  SWEs were the lowest across southwestern Wyoming---varying from 80 to 100 percent of normal.

Near normal (90 to 110 percent) snowmelt streamflow volumes are expected across almost all major basins across Wyoming.  Above average streamflow volumes are expected across the Powder River Watershed.  The Lower Green, Sweetwater, and lower portions of the Wind River Basin are forecasted to have below normal streamflow volumes during the upcoming snowmelt season.

Reservoirs storages across Wyoming are slightly below average for January. 

The latest Wyoming water supply outlook graphic:

 



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