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Tongue River Reservoir State Park, Decker, MT

Photo: Magicpiano, CC BY-SA 4.0, via Wikimedia Commons. Cropped and resized.

Sports & Outdoors

Tongue River Reservoir State Park

A 12-mile reservoir in southeastern Montana known for fishing, boating, swimming, and camping.

292 Campers Point, Decker, MT 59025 · Decker, MT

About Tongue River Reservoir State Park

This Montana state park sits on the western shore of a long reservoir in the prairie hills of the southeast corner of the state, surrounded by red shale, juniper canyons, and open grassland. Anglers come for crappie, walleye, bass, and northern pike, and the reservoir has produced several state record fish. Visitors also boat, swim at a small sandy beach at Sand Point, and camp at a range of campsites, including electric and non-electric sites. A marina store at Campers Point sells supplies, bait, boat rentals, and fuel. Wildlife such as osprey, herons, deer, and pronghorn are common, and the reservoir is a popular ice fishing spot in winter.

  • #reservoir
  • #fishing
  • #boating
  • #swimming
  • #camping

What's around here?

The closest stops to Tongue River Reservoir State Park, ordered by straight-line distance.

  • Sightseeing
    History Buff

    Little Bighorn Battlefield National Monument

    $25–$50

    Walk Last Stand Hill, see the Indian Memorial and drive the tour road across the 1876 battlefield.

    45 mi awaySwitch it up: Sightseeing

  • Museums
    History Buff

    Jim Gatchell Memorial Museum

    Under $25

    A Buffalo, Wyoming museum of Old West and Native American artifacts collected by early pharmacist Jim Gatchell.

    52 mi awaySwitch it up: Museums

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