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FISH WASHINGTON
Riffe Lake

Riffe Lake, historically known as Mossyrock Lake then as Davisson Lake, is a reservoir formed by Mossyrock Dam. It is a popular water for smallmouth bass.   The lake stretches more than 13 miles along US-12 east of Mossyrock and has a year-round open fishing season.

Riffe provides good fishing for landlocked coho and Chinook salmon, plus an occasional large brown trout. Rainbow and cutthroat trout are also available. Landlocked salmon rules apply. Other warm water species present include brown bullheads, along with a few bluegill and crappie.

Mossyrock Park, near the west end on the south side of the dam, has camping facilities that can be reserved by calling (360) 593-3900. Mossyrock Park boat launch remains useable during most low-water conditions. Boat launches at the east end (Kosmos and Taidnapam Park) are not usable during low-water periods.

Bank access is available on both sides near the dam and at the Taidnapam Park "fishing bridge"� near the upper end of the lake.Call the Tacoma Power toll-free fishing hotline at (888) 502-8690 to check reservoir levels.

Species you might catch

Black crappie
Bluegill
Brown bullhead
Brown trout
Chinook salmon
Coastal cutthroat
Coho salmon
Smallmouth bass

Lake Information

Lewis County
Lake Acreage: 11,325.9
Elevation: 774 feet
Westside Washington

Lake Management Type
Mixed species - Trout emphasis

Sport Fishing Regulations & Seasons

Emergency Rule Updates
Fishing closures and openings happen constantly throughout the year. The E-Rules keep you up-to-date.


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This feature shows the general location of the selected body of water. Directions may not include routes to boat launches or other water access sites. Check below for access sites or read the description for specific access information. Please do not trespass on private property.
Two-Pole Fishing Allowed

Access Sites / Boat Ramps on this Lake

Fish Plants & Stocking Reports