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Tongue River Reservoir Campground

Spread across six different camping areas, the Tongue River Reservoir Campground lies on the edge of a 12-mile-long reservoir. It’s surrounded by scenic red shales, juniper canyons, and open prairies in the southeast of Montana and is situated just a short drive from the border with Wyoming.Camping at the Tongue River Reservoir Campground offers access to 156 sites (81 are reservable) at the Rattlesnake, Campers Point, Pee Wee North, Pee Wee South, Sant Point, and Below the Dam campsites. Pets are welcome to stay with you, and there’s space for big rigs, with some sites offering 30/50 amp electrical connections.Aside from accessible toilets, picnic tables, and drinking water, Decker campers also enjoy access to boat launch ramps (at Pee Wee North and Camper Point), a dump station, and fire rings. You can pick up ice, firewood, groceries, and drinks at the marina store, as well as bait and tackle if you want to go fishing.


Find the perfect campsite.

Find the perfect RV for your campsite

Camping with an RV

Camping with an RV

Have you ever wanted to sleep at the foot of a mountain or wake up to the sound of the ocean’s waves gently crashing on the shore? When on a road trip, do you like to stop at every weird and wonderful roadside attraction? Do you ever just want to take a break from the hustle and bustle of everyday life and get out into the great outdoors? Then renting an RV is definitely for you.

Camping in an RV allows you to adventure on your terms. Whether you’re looking to bond over an open fire with family and friends or you just want to get away for a while, there’s no better way to do it than from behind the wheel of an RV.

How Outdoorsy Works

1

Find the perfect RV

Choose your location, dates, and send the owner a request to book.

2

Delivery or Pickup

Arrange a pick up time with the owner or have it delivered to your driveway or destination.

Let us help

Most owners have the option to deliver and set up the RV right to your destination.

3

Adventure awaits!

Enjoy the freedom of the open road nd the assurance of 24/7 roadside assistance.

After your trip, return the RV to the owner on the same condition you recieved it.

The Great Outdoors

RV camping at the Tongue River Reservoir Campground puts you on the doorstep of a sprawling reservoir, which was constructed with the impounding of the Tongue River. It’s a popular destination for boating, swimming, and other water sports, including fishing, with walleye, bass, northern pike, and crappie all for the taking. Deer, antelope, and blue herons are regularly spotted, as are bald eagles and osprey in the skies above.Decker campers also enjoy easy access to the Tongue River Breaks Hiking and Riding Area, which is one of three such designated areas in the Ashland Ranger District. It’s a 90-minute drive from the campground and provides an idyllic location to escape from the noise of motorized traffic for some solitude while hiking or horseback riding.The Tongue River Reservoir Campground can also be used as a base for visiting the Bighorn National Forest, which lies just across the border in Wyoming. It sprawls across more than one million acres along the spine of the Bighorn Mountains and is one of the oldest government-protected forest lands in the United States. There are around 1,500 miles of multi-use trails to explore, accessing picturesque alpine meadows and the 13,189-foot summit of Cloud Peak. Explore along the Bighorn Scenic Byway, drive across the 9,677-foot Powder River Pass on the Cloud Peak Skyway, or visit the Medicine Wheel National Historic Landmark along the Medicine Wheel Passage.

Exploring the City

Decker campers are around an hour’s drive from Lodge Grass, where you can find a supermarket for stocking up on supplies. There’s also a gas station here if you need to fill up your RV rental and a health clinic in case of any emergencies.While camping at the Tongue River Reservoir Campground, be sure to visit the Rosebud Battlefield State Park, which lies around 25 minutes’ drive to the north. It preserves part of a battlefield involved in the 1876 Battle of the Rosebud, where Lakota Sioux and Cheyenne tribes attacked United States Army forces under the command of General George Crook. It marked a turning point in the Great Sioux War when Native American tribes were being forced onto reservations. There’s an information kiosk where you can learn more about the battle before walking through the site’s rolling prairie framed by ridges and the Rosebud Creek.Continue driving northwest, and you’ll arrive at the Little Bighorn Battlefield National Monument, which is located near Crow Agency. It preserves the site of the 1876 Battle of the Little Bighorn between George Armstrong Custer’s 7th Cavalry and combined Lakota, Northern Cheyenne, and Arapaho forces, and acts as a memorial to those who fought and died during the battle. Wander between the monuments honoring the U.S. troops, Crazy Horse, Lame White Man, and Noise Walking at the location where these warriors fell, then explore the Custer National Cemetery that forms part of the national monument.Camp in an RV near Decker and make a day trip to the Yellowtail Dam, which was constructed across the Bighorn River in the 1960s. Aside from regulating the flow of water for irrigation purposes, the dam, its reservoir, and the river are now popular recreation destinations and one of the finest wild trout fisheries in the United States. Stop in at the Yellowtail Dam Visitor Center to browse the exhibits about the dam’s construction and the unique geology of the area while learning about the life of Robert Yellowtail, a Crow tribal leader after whom the dam was named.Whether you want to explore the historic battlefields of Montana or discover its natural wonders, book an RV in Big Horn County and start planning your next vacation.


Every new RVers biggest concern? How to dump RV waste. But don’t fret! We have Outdoorsy community member, Mike Jackson, to talk you through it.
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Find the perfect RV for Tongue River Reservoir Campground

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All towables

Trailer

Trailers for all types of towing vehicles, including SUVs and pickups.

Folding Trailer

Trailers you can tow with passenger vehicles or SUVs. A great way to transform average cars into adventure cars.

Fifth-Wheel

Larger trailers that attach to towing vehicles with a gooseneck extension in the truck bed.

Toy Hauler

Living quarters in the front with dedicated space for hauling motorcycles or other “toys” in the back.

Utility Trailer

All other types of towable trailers.

All drivables

Class C

Popular with small families and first-time RV drivers who want a little more room than a van. Comparable to driving a truck.

Camper Van

The smallest and nimblest of fully enclosed RVs. Drives like a van. Loves posing for Instagram.

Class B

A formal-sounding name for camper van, but just as photogenic.

Class A

Drivers should be comfortable driving bus-sized vehicles and dealing with parking limitations. Great for delivery.

Truck Camper

If you can drive a truck, you can drive a truck camper. Makes roughing it significantly less rough.

Other

All other types of drivable vehicles.

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Questions about RVs?

Q.

What type of RV should I choose?

A.

Start by determining how many people are planning to travel with you. Going on a solo-journey? Choose a camper van or a teardrop trailer. Bringing the whole family along for the ride? Consider a spacious Class A or five-wheel.

You’ll also want to consider amenities. For example, if you’re planning to cook on the road, you’ll want a kitchenette. If your campground doesn’t have public restrooms, you’ll want to search RVs with bathrooms. Check out full descriptions of our models to help you decide here.


Q.

Do the RVs have bathrooms?

A.

Yes. Class A’s, Class B’s, and Class C’s and five-Wheels typically have bathrooms. Depending on where you plan on camping, you’ll want to double-check the availability of restrooms if selecting a rig without a bathroom. Nervous about renting an RV with a bathroom? Owners can help show you how to clean the tank or will offer to do it for you for a fee.


Q.

How does check-in work?

A.

Once an Owner approves your RV reservation, you can coordinate a time to pick up your rig or have it delivered to your doorstep or campsite. At that point, the owner will do a key exchange with you and walk you through the RV and answer any questions you might have.