River Flows & Lake Levels

River flows as of Jan. 22

Cowlitz River below Mayfield Dam – about 14,500 cubic feet per second (cfs)
Mayfield flow forecast: Current discharge is about 14,400 cfs. With the current inflow forecast, the plan is to stay at this discharge level through the week. We may lower the discharge if inflow forecasts come in lower throughout the week.

Nisqually River below LaGrande Dam – 2,370 cfs

Wynoochee River above Black Creek – 4,870 cfs

Wynoochee River at Grisdale – 2,150 cfs

Green River at Palmer (Tacoma Water’s headworks) – 909 cfs

North Fork Skokomish River below Cushman Dam No. 2 – 311 cfs

Check out water safety resources. River flows can change at any time.

Subscribe to available Water Alerts provided by the US Geological Survey.

Lake levels and boat launches as of Jan. 22

Riffe Lake – 734.13 feet of elevation (maximum of approx. 749 ft)
Learn about changes to Riffe Lake levels.
Mossyrock Park boat launch is open. Both lanes are usable and the dock is in the water.
Taidnapam North boat launch is open.
Kosmos boat launch and parking lot are closed.
Taidnapam Park boat launch is closed.
Mossyrock Park swim area is open.

Alder Lake – 1,193.76 feet of elevation (maximum of 1,207 ft)
Alder Lake Park boat launch is open. (Please note the moorage dock is closed until further notice.)
Rocky Point boat launch is open.
Stacel Point swim area is closed.
Sunny Beach Point swim area is closed.

Mayfield Lake – may fluctuate 4 feet weekly, between 421 and 425 feet of elevation (maximum of 425 ft)
Mayfield Lake Park boat launch – normally usable for medium-sized watercraft
Visually check launch conditions before launching

Lake Cushman – 716.64 feet of elevation (maximum of 738 ft)
The Lake Kokanee boat launch is open.

Lake Kokanee drawdown Jan. 22-24 postponed; new date TBD
Tacoma Power will lower Lake Kokanee in January in order to perform maintenance on Cushman Dam No. 2. The shoreline will be closed during the drawdown, including the public boat launch and private park. The exposed lakebed will be off-limits for safety reasons. Unless there are unanticipated delays, the lake will be refilled each time within a few days after the maintenance is complete. Questions? Please email: cushmanfeedback@cityoftacoma.org.

Wynoochee Lake –  773.21 feet of elevation (maximum of 800 ft)
Coho Campground is open; the boat launch is closed.

Get current campfire rules on the Parks & Recreation homepage.