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Lake Koocanusa, a 90-mile-long reservoir straddling the Montana-Canada border, is a paradise for adventure seekers, wellness enthusiasts, and families alike. Surrounded by the majestic Purcell and Salish Mountain Ranges, this lake offers a kaleidoscope of activities. Fishing enthusiasts can cast their lines for rainbow and cutthroat trout, whitefish, kokanee, and burbot, while boaters can explore the vast expanse of its deep blue waters.
For those who crave land-based adventures, hiking trails abound, providing sweeping vistas of the Whitefish Range and the pristine mountains. The old Tobacco River railroad grade trail is a favorite, winding past the Tobacco River Campground and across the Tobacco River Bridge in Rexford. Families can enjoy picnics and camping at various recreation sites such as Rocky Gorge, Peck Gulch, and McGillivray, which offer amenities like boat ramps, swimming beaches, and group picnic shelters.
A scenic drive along the Lake Koocanusa Scenic Byway is a must, with its picturesque views and minimal traffic, making it a delightful route for motorcyclists and photographers. Tours of Libby Dam, which created this reservoir, are available during the summer months. Nearby, the quaint towns of Rexford and Eureka offer a range of accommodations from rustic cabins to cozy bed-and-breakfast inns, rounding out a vacation that blends adventure, nature, and relaxation.
- Surface area (mi)
- 28893.75
- Max depth (ft)
- 347.77
- Elevation (ft)
- 2460.63
- Shoreline length (mi)
- 250
Ideal for
- Family friendly:
- Pet friendly:
- Romantic getaways:
Popular activities
- Boating
- Waterskiing
- Jet Skiing
- Swimming
- Fishing
- Hiking
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Help us improve by making a suggestion.
Nearby lakes
Where to stay
Frequently Asked Questions
Ready to dive into what Lake Koocanusa has to offer? Let’s tackle some of the burning questions you might have as you plan your visit!
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Yes, swimming is allowed in Lake Koocanusa. There are designated swimming areas, such as the swimming beach at McGillivray Campground and the swimming beach at Rexford Bench, where you can swim safely.
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Lake Koocanusa is a popular destination because it offers excellent fishing and boating opportunities. The lake is home to various fish species like rainbow and cutthroat trout, whitefish, and kokanee. Several recreation areas along the lake provide campsites, boat ramps, and facilities for picnicking and camping.
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Fishing for bull trout in Lake Koocanusa, Montana, is limited to catch-and-release only, with no harvest allowed. Anglers must possess a Lake Koocanusa Bull Trout Catch Card and follow specific regulations to protect the species. Angling is prohibited in certain areas to safeguard spawning habitats.
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The best beach at Lake Koocanusa for families is Kinsman Park. It has a sandy beach, a kids’ play area, picnic tables, and tall trees for shade. This setup makes it ideal for family activities and relaxation.
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Towns near Lake Koocanusa include Eureka, Fortine, and Troy in Montana. These towns are situated in the surrounding areas of the Kootenai National Forest, which borders the lake. The lake also extends into Canada, near the town of Waldo, now covered by the lake.
