Wyoming Water Supply Outlook---April 8th

…Wyoming March precipitation was nearly 133 percent of average...

...Current water year precipitation continues to be near 135 percent of normal across Wyoming…

…Early April mountain snowpack across Wyoming is 135 to 145 percent of average... 

Above to well above normal snowmelt streamflow volumes are expected this runoff season across almost all major basins in Wyoming...

…Wyoming reservoir storages remain around 90 – 95 percent of average for early April…

March precipitation totals across Wyoming were nearly 133 percent of average. Precipitation numbers varied between 203 percent of normal over the Upper Yellowstone Watershed to near 80 percent of normal over the Cheyenne/Niobrara Basins (Eastern Wyoming).  Current water year (October 2013 - March 2014) precipitation totals across Wyoming continued to be near 135 percent of average.

Mountain snowpack across Wyoming was 135 to 145 percent of normal by early April.  Snowpack "water" numbers and/or SWEs continued to be the highest across north central Wyoming—varying between 145 to near 160 percent of average.  SWEs were the lowest over extreme southwest Wyoming---varying from 110 to 120 percent of normal.

Above normal (120 to 145 percent) snowmelt streamflow volumes are expected across almost all major basins across Wyoming.  Well above average streamflow volumes (140 to 180 percent) are still expected across the Powder and Tongue Watersheds.  Slightly below average streamflow volumes during the upcoming snowmelt season are still forecasted for the Little Wind and Sweetwater River Basins.

Reservoirs storages across Wyoming continue to be slightly below average for April. 

The latest Wyoming water supply outlook graphic:



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