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Our lobby will be closed to the public until further notice. For payment plans and assistance, call us at 253-502-8600. More info at MyTPU.org/COVID19.

River Flows & Lake Levels

River flows as of August 14

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

Cowlitz River below Mayfield Dam – about 3,740 cubic feet per second (cfs)
Mayfield flow forecast: We plan to be at this discharge through Saturday.  It is likely that we will increase discharge to about 5,100 cfs on Sunday or Monday.  There’s a possibility that discharge may increase to 6,300 cfs.

Nisqually River below LaGrande Dam – 904 cfs

Wynoochee River above Black Creek – 252 cfs

Wynoochee River at Grisdale – 209 cfs

Green River at Palmer (Tacoma Water’s headworks) – 172 cfs

North Fork Skokomish River below Cushman Dam No. 2 – 157 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 August 14

Riffe Lake – 741.48 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.
Mossyrock Park day-use area notice: When day-use parking is full, additional visitors will be turned away until parking spaces become available. FYI – this occurs more often on weekends and hot days.

Alder Lake – 1,200.54 feet of elevation (maximum of 1,207 ft)
Alder Lake Park boat launch is open.
Rocky Point boat launch and day-use area are closed.
Stacel Point swim area is open.
Sunny Beach Point swim area is open.
Alder Lake Park day-use area notice: When day-use parking is full, additional visitors will be turned away until parking spaces become available. FYI – this occurs more often on hot days.

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

Wynoochee Lake –  782.73 feet of elevation (maximum of 800 ft)
The day-use area is open.

Coho Campground and boat launch are open.

Get information about Skokomish Park at Lake Cushman.

Get current campfire rules on the Parks & Recreation homepage.

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