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Thompson Chain of Lakes State Park

Fishing, camping, wildlife viewing and boating draw visitors to this extensive park along a 20-mile string of lakes in northwest Montana.

About the Park

Thompson Chain of Lakes State Park covers approximately 3,000 acres and stretches over 20 miles along Highway 2, halfway between Kalispell and Libby. This extensive park includes shoreline access to 18 lakes including McGregor Lake, Little McGregor Lake, Lower Thompson Lake, Middle Thompson Lake, Upper Thompson Lake, Horseshoe Lake and Loon Lake.

Visitors enjoy swimming, boating, camping, and water skiing, and the lakes are especially noted for great fishing. Thompson Chain of Lakes State Park also offers some of the most outstanding opportunities for wildlife viewing in northwest Montana.

There are 83 standard campsites and 8 group campsites, all of which require a fee for overnight camping. Sites are rustic; there is no drinking water available. Concrete boat ramps are located at Little McGregor Lake, Boisverts on McGregor Lake, the Peninsula on Lower Thompson Lake, Upper Thompson Lake, Horseshoe Lake and Loon Lake.

Roads are primitive and not recommended for motor homes and large trailers. However, the 37 developed campsites at Logan State Park, located on Middle Thompson Lake, are suitable for large camping units.

Alerts & Closures

Restrictions and Closures

See a current list of Restrictions and Closures on State Parks and other FWP lands that may be affected by floods, fire, drought or major maintenance activities.


  • Bird Watching

  • Camping

  • Canoeing

  • Fishing

  • Group Camping

  • Kayaking

  • Motor Boating

  • Photography

  • Picnicking

  • Swimming

  • Wildlife Viewing


Some amenities are seasonal. Check with the park for availability.

  • Boat Launch

  • Campsite

  • Camp Host

  • Established Fire Pits

  • Picnic Tables

  • Toilets (Vault)

Seasons & Hours

Hours listed below are normal operating hours and may not apply when there is a special restriction or closure. Check Alerts and Closures in the tab below.

Open year round.
Roads are not maintained during winter months.

Open (first-come, first-serve)

Park Rules


Contact the park manager for open volunteer positions at Thompson Chain of Lakes State Park.

For complete position descriptions, application forms, and details about Montana State Parks volunteer programs, visit the Volunteers page.


Montana Residents

  • Montana residents who pay the $9 state parks fee with their annual vehicle registration have no daily entrance fees to state parks. For residents who don't include this in their vehicle registration, non-resident day use fees apply.


  • Day use entrance fee with a vehicle: $8

  • Day use entrance fee as a walk-in, bicycle or bus passenger: $4

  • With a Nonresident Entrance Pass: Free

Contact Information

Mailing Address:
Thompson Chain of Lakes State Park
c/o FWP Region 1 Headquarters
490 N Meridian Rd
Kalispell, MT 59901

Lower Thompson Lake
May 1 - Sept 30: 406-293-5667
Oct 1 - April 30: 406-751-4590

McGregor Lake
May 1 - Sept 30: 406-858-2246
Oct 1 - April 30: 406-751-4590


Aquatic Invasive Species

Help protect Montana's waters

AIS can be easily spread from one waterbody to the other. Anglers, boaters, construction workers, pond owners, gardeners, seaplane pilots, field workers - virtually anyone who works or plays in or around water can unknowingly transport these pests on their boats and equipment. It takes only one mistake to potentially infest a new water body.

Prevent the spread of AIS 

Thompson Chain of Lakes State Park


78854 US Hwy 2
Libby, MT 59923
(48.029089 / -115.051160)

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Park map

View the park map to learn more about amenities, parking and camping details

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Park fees

Learn about fees and regulations for all Montana State Parks

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Meet The Park Manager

Dave Bennetts

Dave Bennetts has worked for Montana Fish, Wildlife & Parks for over 12 years. Dave graduated from Oregon State University in 1993 with a Bachelors of Science degree in Forest Recreation Resource Management. He worked seasonally for the National Park Service for more than a dozen years before joining FWP in 2006. Dave is originally from Butte, MT.

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