The Natural Resources Conservation Service in Idaho has released the March Water Supply Outlook Report for the 2021 water year.
A wet and cold February brought snowpack levels to near or above normal conditions across most of Idaho. March 1, basin-wide snowpack ranges from 67% to 120%. Especially heartening was the improvement in the Southern Snake River basins’ snowpack. At report time, there is an expectation for near normal irrigation water supply across most basins.
Streamflow, snowpack, and precipitation data for each basin can be accessed on the NRCS Idaho Snow Survey web page.
“Unlike other areas of the state, below normal precipitation, snowpack, and low reservoir storage in the Wood and Lost basins are cause for concern about ample water supply in those basins,” said Erin Whorton, Hydrologist-Water Supply Specialist for NRCS Snow Survey in Idaho. “However, it is possible that a few big storms in the next few months could switch this narrative.”
For information on specific basins, streams, and reservoirs, please view the full report online at March Water Supply Outlook Report.