River Flows & Lake Levels

River flows as of Jan. 15

Get our latest parks and recreation COVID-19 updates at MyTPU.org/Parks.

Cowlitz River below Mayfield Dam – about 14,600 cubic feet per second (cfs)
Mayfield flow forecast: We plan to maintain the current discharge through the weekend. 

Nisqually River below LaGrande Dam – 2,460 cfs

Wynoochee River above Black Creek – 4,580 cfs

Wynoochee River at Grisdale – 1,230 cfs

Green River at Palmer (Tacoma Water’s headworks) – 4,260 cfs

North Fork Skokomish River below Cushman Dam No. 2 -679 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. 15

Riffe Lake – 746.04 feet of elevation (maximum of approx. 749 ft)
Learn about changes to Riffe Lake levels.
Mossyrock Park boat launch and day-use area are open.
Taidnapam North boat launch is open.
Kosmos boat launch and parking lot are closed.
Taidnapam Park boat launch and swim area are closed.
Mossyrock Park swim area is closed.

Alder Lake – 1,204.83 feet of elevation (maximum of 1,207 ft)
Alder Lake Park boat launch and day-use area are open.
Rocky Point boat launch, day-use area, and campground are closed.
Stacel Point swim area is closed.
Sunny Beach Point 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 and day-use area are open. Campsites reopen April 15.

Lake Cushman – 721.35 feet of elevation (maximum of 738 ft)
The Lake Kokanee boat launch is open.
There is currently no public access to Lake Cushman.
Get information about Skokomish Park at Lake Cushman.

Wynoochee Lake –  775.36 feet of elevation (maximum of 800 ft)
The day-use area is open.

Coho Campground and boat launch are closed.

Get current campfire rules on the Parks & Recreation homepage.