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21-030 Dworshak Dam reservoir continues to refill

WALLA WALLA DISTRICT, CORPS OF ENGINEERS
Published May 25, 2021

AHSAHKA, Idaho –Dworshak Dam releases will remain at 1,600 cubic feet per second (cfs) through mid-June as the reservoir continues to refill. The reservoir elevation will reach approximately 1,580 feet, 20 feet from full pool, on Memorial Day weekend. Water managers will release another announcement regarding Dworshak operations before Father’s Day weekend.

The rate of change in downstream river stage as measured at the United States Geological Survey (USGS) Clearwater River Near Peck, ID (gage #13341050) is not being impacted by Dworshak operations at this time.

The current operation will result in total dissolved gas (TDG) remaining below 110%. The Corps will continue to work with regional water managers, other agencies, tribes, and fish managers and hatcheries in joint efforts to meet reservoir objectives and keep total dissolved gas (TDG) below the Idaho State maximum threshold of 110%, when possible.

For safety, the public is advised to be aware of the danger associated with fluctuating river flows and elevations. The river at this time of year is deep, cold and fast, so extreme caution should be used near riverbanks. Boaters, anglers and other people using waterways both in Dworshak Reservoir and below the dam on the Clearwater River are advised to be alert to changes in water elevation and volume of flow. 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/.


Contact
CENWW-PA
509-527-7020
cenww-pa@usace.army.mil

Release no. 21-038