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FISH WASHINGTON
Mayfield Lake

This reservoir was formed by the construction of Mayfield Dam. It is managed for catchable rainbow trout and warmwater species. Tiger muskies were introduced in 1993 to help in controlling nuisance northern pikeminnow (squawfish) populations.

The  lake is located about three miles west of Mossyrock, and has a year-round open season.The big attraction is tiger musky fishing. The state record is currently over 31 pounds; larger ones are out there. The best tiger musky fishing is during the warmer months.Currently the minimum size limit for muskies is 50 inches.

Fishing should be good this year for stocked with catchable-size rainbow provided by Tacoma Power as part of their federal hydro power license.There is an 8-inch minimumsize on trout. All cutthroat trout in Mayfield Lake and in tributary Tilton River must be released.

Remember, only adipose clipped rainbow trout may be retained in Mayfield Lake and the Tilton River. Surplus hatchery Coho and fall Chinook may be placed in the lake for additional fishing opportunity. Yellow perch are also caught in fair numbers, and a few largemouth bass are present. Boating access is available at a Lewis County park just off of Highway US-12, at Ike Kinswa State Park, and at a private resort. There is fair shore fishing access at the state park and at the Mossyrock Trout Hatchery. Call Tacoma Power's toll free fishing line at (888) 502-8690.

Species you might catch

Brown bullhead
Chinook salmon
Coastal cutthroat
Coho salmon
Largemouth bass
Northern pikeminnow
Rainbow trout
Sculpin
Sucker, General
Tiger muskie
Yellow perch

Lake Information

Lewis County
Lake Acreage: 1,529.7
Elevation: 428 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 NOT allowed

Access Sites / Boat Ramps on this Lake

Fish Plants & Stocking Reports