Placid Lake State Park

Seeley-Swan Valley Gem — 40 Campsites, Trout & Kokanee Fishing, Swim Beach & Logging History Near Seeley Lake

Placid Lake State Park is a lakeside campground on Placid Lake in western Montana’s Seeley-Swan Valley, approximately 3 miles south of Seeley Lake off Highway 83. The park offers 40 campsites (17 with electric hookups), a dedicated hike-bike camp, a boat launch with docks, a designated swimming area, and interpretive panels about the area’s early logging history — all set against a backdrop of mountain peaks and pristine forest.

Placid Lake’s clear water supports an excellent multi-species fishery — rainbow, cutthroat, brown, and bull trout, plus kokanee salmon, whitefish, and perch. The Seeley-Swan Valley location places the park within reach of the Bob Marshall Wilderness, Mission Mountains Wilderness, and Lolo National Forest — making Placid Lake a convenient basecamp for exploring some of Montana’s most iconic backcountry.

Things to Do

Fishing

Placid Lake supports an exceptional multi-species cold-water fishery:

• Species: Rainbow trout, cutthroat trout, brown trout, bull trout, kokanee salmon, mountain whitefish, and yellow perch
• Shore and boat fishing from the park’s boat launch
• Montana fishing license required

Boating & Swimming

• Boat launch and docks: Access for motorboats, kayaks, canoes, and sailboats
• Designated swimming area on the lake
• Note: All watercraft must be inspected for aquatic invasive species before launching

Wildlife & Nature

• Loons: Common loons nest on Placid Lake — listen for their iconic call at dusk and dawn
• Osprey: Frequently seen diving for fish
• Waterfowl: Diverse waterfowl during migration seasons
• Interpretive panels: Learn about the area’s early logging history

Camping

Best Time to Visit

Visitor Tips

• Kokanee salmon: Fall brings the kokanee spawning run — a unique fishery event and wildlife viewing opportunity as fish turn bright red in the shallows.
• Loons: Common loons nest on Placid Lake — keep distance from nesting sites and listen for their haunting calls at twilight. A quintessential Montana lake experience.
• RV limit: Maximum trailer/RV length is 25 feet — this park is best suited for tents, truck campers, and smaller trailers.
• Hike-bike camp: Touring cyclists on Highway 83 will appreciate the dedicated hike-bike camping area — a welcoming amenity on the Great Divide Mountain Bike Route.
• AIS inspection: All watercraft must be inspected for aquatic invasive species before launching in Montana waters. Inspection stations are located along major highways.
• Wilderness access: Placid Lake is within reach of the Bob Marshall Wilderness and Mission Mountains Wilderness — use the park as a basecamp for day trips or backcountry launches.

Frequently Asked Questions

Last updated: April 2026