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River Flows & Lake Levels

River flows as of July 2

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Cowlitz River below Mayfield Dam – about 4,260 cubic feet per second (cfs)
Mayfield flow forecast: We plan to maintain this discharge into the weekend and then decrease discharge to about 3,500 cfs on Sunday.

Nisqually River below LaGrande Dam – 1,080 cfs

Wynoochee River above Black Creek – 450 cfs

Wynoochee River at Grisdale – 234 cfs

Green River at Palmer (Tacoma Water’s headworks) – 324 cfs

North Fork Skokomish River below Cushman Dam No. 2 – 215 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 July 2

Riffe Lake – 748.24 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 – 1,206.24 feet of elevation (maximum of 1,207 ft)
Alder Lake Park boat launch is open.
Rocky Point boat launch is open.
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 ft)
Mayfield Lake Park boat launch is open.

Lake Cushman – 737.18 feet of elevation (maximum of 738 ft)
The Lake Kokanee boat launch is open.

Wynoochee Lake –  793.29 feet of elevation (maximum of 800 ft)
The day-use area is open.

Coho Campground and boat launch are open.

 Get current campfire rules on the Parks & Recreation homepage.