AHSAHKA, Idaho -- Dworshak Dam water releases will gradually increase starting tonight, rising from approximately 8,700 cubic feet per second to 13,000 cfs by Friday, August 7.
Outflows will increase to approximately 10,700 cfs tonight and remain at that rate for 24 hours. Releases will then continue to ramp up, reaching approximately 13,000 cfs by Friday, August 7, to manage Lower Granite Dam tailwater temperatures ahead of upcoming hot weather and scheduled Doble testing. Throughout the remainder of August, outflows are anticipated to fluctuate between 8,500 cfs and 13,000 cfs based on real-time conditions.
These operations are designed to keep the Lower Granite tailwater temperature below approximately 68°F while ensuring the Dworshak Reservoir forebay elevation drafts no lower than 1,535 feet by the end of the month. The current forebay elevation is at 1,576.87 feet, with 43% of its forecasted summer water used.
For safety, the public is advised to use caution near riverbanks and remain alert to rapidly fluctuating river flows and water elevations on both the Dworshak Reservoir and the lower Clearwater River.
Current Dworshak water-management conditions can be viewed on the Walla Walla District website at https://www.nwd.usace.army.mil/CRWM/Water-Control-Data/Project-Data/.
Release no. 26-026