Among the rolling, prairie hills of Southeastern Montana, Tongue River Reservoir State Park is a rare and loved place where many come to enjoy water-based activities at their best. This lake is a great place for creating memories.

Fishing, boating, swimming, and camping are the prime activities here, and the reservoir boasts excellent crappie, walleye, bass and northern pike fishing. Fly fishermen can test their skill on the river below the dam. Wildlife viewing is also plentiful, with osprey, blue herons, deer, antelope as well as a few bald eagles being regular summer sights.

The park offers 81 reservable camping sites with electric hookups, with 27 of those being double occupancy campsites (two electric hook-ups), as well as over 80 non-reservable, non-electric camping sites. Most sites have a fire ring and a picnic table. A dump station and water faucets are available during peak season, as weather permits. The park also has a fish cleaning station and over 20 vault toilets throughout the campgrounds. There are 2 boat ramps with docks for launching boats, one at Camper Point by the marina and one at Pee Wee North.

Day use areas include sheltered picnic tables at Campers Point and Sand Point. Sand Point has a small, but popular “beach area” for swimming and picnicking.

A marina store at Campers Point offers firewood, ice, fishing and boating supplies, boat rentals, boat and RV storage, bait, groceries, snacks, drinks, gasoline, souvenirs, fishing and hunting licenses and non-resident park passes.

In the winter, Tongue River Reservoir is a popular ice fishing location. Eleven campsites on Campers Point have electricity year-round. During the off season, all sites are first come, first serve.

The park is 642 acres in size at an elevation of 3,468 feet.

Hiking and historical opportunities are available nearby at Rosebud Battlefield State Park, Little Big Horn Battlefield National Monument and in Sheridan, Wyoming.

Please contact the park regarding any hunting regulations.

Park office hours during peak season are 8am to 4pm daily.

State Parks Tagged With: Decker