Mossyrock Hydroelectric Project,
owned by Tacoma Power

On the Cowlitz River, 13 miles upstream from the Mayfield Dam, Mossyrock Dam began generating power in 1968. It rises 605 feet from bedrock and created 23-mile long Riffe Lake. It is the highest dam in the Pacific Northwest.

Name: Mossyrock Hydroelectric Project
Owner: Tacoma Power
Location: WA
Name Plate Capacity: 300 MW

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Recreational Resources

Boatramp	X		Parks	X		Trails
Golf Courses			Wildlife Areas			Tailwater Fishing Facilities
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Camping Areas	X		Tent/Trailer

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