BOISE, Idaho (CBS2) — The Natural Resources Conservation Service in Idaho released the May Water Supply Outlook Report for the 2023 water year.
Warm temperatures in mid to late April brought the snowpack to its melting stage. Peak snowpack was above normal in all basins south of the Clearwater Basin.
The snowpack compared to normal remains high even at this point in the spring. Due to the above normal snowpack, many reservoirs across Idaho began flood risk management operations in early April. Reservoir operators have been releasing water to make room for the incoming snowmelt.
Water supply is likely sufficient in all basins although uncertainty remains if the entire Upper Snake reservoir system will fill since last year’s carryover and winter baseflow were low.
Current streamflow, snowpack and precipitation data for Idaho can be accessed HERE.
For information on specific basins, streams, and reservoirs, view the full report online at the Idaho Snow Survey.
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