River Flows & Lake Levels

River flows as of July 15

Cowlitz River below Mayfield Dam – about 2,430 cubic feet per second (cfs) Flow forecast: Discharge will remain about 2,400 cfs through the week. The possibility of discharge ramping up is low.

Nisqually River below LaGrande Dam – 846 cubic feet per second

Wynoochee River above Black Creek – 190 cubic feet per second

Wynoochee River at Grisdale – 209 cubic feet per second

Green River at Palmer (Tacoma Water’s headworks) – 129 cubic feet per second

North Fork Skokomish River below Cushman Dam No. 2 – 141 cubic feet per second

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 July 15

Riffe Lake – 738.72 feet of elevation (maximum of approx. 749 ft)
Learn about changes to Riffe Lake levels.
Mossyrock Park boat launch is open.
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 – 1,189.74 feet of elevation (maximum of 1,207 feet)
Alder Lake Park boat launch is open.
Rocky Point boat launch is closed.
Stacel Point swim area is open.
Sunny Beach Point swim area is open.

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

Lake Cushman – 727.06 feet of elevation (maximum of 738 feet)
Skokomish Park at Lake Cushman boat launch is open.
The Lake Cushman Resort and its marina are closed. The former owner decided to end the lease, so Tacoma Power is now evaluating options for future use of the site. No public access is allowed at this time. We apologize for any inconvenience. Get more information at MyTPU.org/Cushman.
The Lake Kokanee boat launch is open.

Wynoochee Lake –  761.03 feet of elevation (maximum of 800 feet)
Coho Campground is open.

Get current campfire rules on the Parks & Recreation homepage.