Official Water Supply Forecasts (January - July)
2023 Water Year

[Previous Water Years]

Monthly WSF Date Posted (by 17:00)
January 5-Jan-2023
February 3-Feb-2023
March 3-Mar-2023
April 5-Apr-2023
May 3-May-2023
June 5-Jun-2023
July 6-Jul-2023
Water Year ESP Plot (NWRFC)  
Grand Coulee Dam (APR-AUG)
The Dalles Dam (APR-AUG)
Lower Granite Dam (APR-JUL)