Weekly Parks Showcase, Tongue River Reservoir4 min read

Your Weekly Showcase of Montana State Parks

This week’s focus takes us to the southeast border of Montana and 10 minutes outside of Decker, MT to Tongue River Reservoir State Park.

Tongue River Reservoir is on the Tongue River, a tributary of the Yellowstone River, approximately 265 miles long, that runs through Montana and Wyoming. The park provides a 12-mile long reservoir set in the truly scenic prairie land of southeastern Montana featuring red shale and juniper canyons.

Due to the rareness of large bodies of water like this in prairie country, the park can see up to 50,000 visitors a year.

Camping? Tongue River Reservoir has 81 reservable campsites with electric hookups, and 27 of those are double occupancy with two electric hook-ups.

There are also 80 non-reservable, non-electric sites! Most sites also have a fire ring and picnic table.

There is an RV dump station and water faucets available during peak season. During the offseason there are 11 sites with electricity, these are first-come, first-served.

Did you know?

Although there are no hiking opportunities at Tongue River, there is hiking available nearby at Rosebud Battlefield State Park or Little Big Horn Battlefield National Monument.

Things to do:

✅ Take the boat out on the water! There are two boat ramps with docks, one at Campers Point and one at Pee Wee North.

✅ Go for a swim! Sand Point has a small beach area for swimming.

✅ Keep your eyes open for wildlife! You may just see osprey, blue herons, deer, antelope, or bald eagles.

✅ Bring your picnic! The designated day-use area has picnic tables at Campers Point and Sand Point.

✅ Plus so many more!

At 12 miles long, the reservoir makes for excellent fishing any time of year! You’ll find crappie, walleye, bass, and northern pike here. You can also fly fish below the dam and there is a fish cleaning station located within the park.

Forgot anything or just need additional supplies? The marina at Campers Point has 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.

While summertime may be the most popular time to visit the park, Tongue River Reservoir State Park also features amazing ice fishing and year-round campsites that support just that.


Four state record fish have been pulled from Tongue River Reservoir State Park, including a 37 pound Northern Pike?

Curious what other visitors have had to say about the park?

“My most favorite places to go camping and fishing.”

“Catch Walleye, Pike, Crappie, Bass, Cats, and MORE!”

“Great place to recreate with shore-side camping, most with electrical hookups available.”

“Tongue River Reservoir has the best fishing – they have a wide variety of fish to choose from when They hit they hit you hard. Everything from walleye to catfish to a bluegill sunfish, bass, pike, crappie, etc.”

“I’ve been going there since I was a kid. My best childhood memories are there, the countless hours spent fishing and water skiing. Also, an amazing place to make friends from all over the country. I hope to give my kids great memories here as my parents did for me!”

Tongue River Reservoir State Park Quick Facts

Park Open Year-Round

Campground Open Year-Round 11 campsites have electricity year-round

Open Year-Round

  • 642 Acres

  • ADA Accessible

  • Pets Allowed

  • Toilets (Vault)

  • Water

  • Electricity

  • RV Dump Station

  • Boat Launch

How Does the Foundation Help State Parks Like Tongue River Reservoir State Park?

As Montana State Parks’ only statewide fundraising partner, the Foundation helps to raise awareness, education, and most importantly support boots-on-the-ground improvement projects for users and supporters like you.

As an agency faced with a $22 million maintenance deficit, our work and collaboration help to ensure continued access and solutions currently inside our state park system.

Because in the end, we envision state parks that reflect Montana’s renowned outdoor recreation and heritage for all… forever.

Other Ways to Support Montana State Parks

A simple way to help Montana State Parks, each and every year, is through our branded Montana license plates. These feature the famous Monte Pollack painting, Placid Lake Sunset, and are an effective way to say “yes” to protecting Montana’s public lands by doing what you’d be doing anyway by registering your vehicle.

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