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Water Level StatusLast 14 Days

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Lake guide

Ramps

Speelyai Bay ParkAriel, WA · PacifiCorp · main west-end launch

MapInfo

Cresap Bay ParkCougar, WA · PacifiCorp · east-end launch + campground

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Charts

Depth charti-Boating Interactive Chart

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Contact & rules

Lewis River recreation — PacifiCorpPacifiCorp rules & park regulations

Open

Boating & yacht clubs

No organized sailing or boating clubs verified for Lake Merwin yet.

About Lake Merwin

Lake Merwin is a 3,835-acre reservoir in Washington, managed by PacifiCorp. Live water-surface elevation comes from USGS gauge 14219950. Public launches include Speelyai Bay Park and Cresap Bay Park.

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