Lake Level Forecast

History shows that snowpack and precipitation destined for Lake Roosevelt can change quickly as winter turns to spring and Lake Roosevelt is managed for downstream flood control. In turn, spring lake levels can vary dramatically. For a weekly forecast, visit www.usbr.gov/pn/ grandcoulee/lakelevel/

This year, however, a little more certainty is available. The U.S. Bureau of Reclamation reports that drum gate maintenance is necessary at Grand Coulee Dam because two drum gate seals are leaking. As a result, says the Bureau, “This will require Grand Coulee Dam to be drafted below elevation 1255 feet by mid-March and could last approximately six weeks depending on the damage to the seals.”