Tongue River Reservoir

Overview

Tongue River Reservoir State Park offers a refreshing blue oasis set against the rugged, high plains landscape of southeastern Montana. Stretching twelve miles across, this reservoir is a premier destination for those seeking water-based recreation in a peaceful, remote setting. The park is renowned for its exceptional fishing opportunities and expansive views of the red shale bluffs that line the water. Whether you are passing through on a cross-country journey or planning a week-long fishing expedition, the park provides a scenic backdrop for a quiet outdoor escape.

Location & Surroundings

Located in Decker, MT, just north of the Wyoming border, the park is surrounded by stark prairie landscapes and juniper-dotted hills. The isolation of this region ensures that visitors experience incredible dark skies at night and a true sense of solitude during the day. The reservoir itself is the primary draw, carving a deep blue path through the dry, rolling terrain. RVers will find the drive into the park manageable, though the wide-open spaces and minimal local traffic highlight the area's rural character.

Amenities & Park Features

The park features several camping loops tailored for different needs, including the popular Campers Point. Travelers will find electric hookups at many sites, accommodating larger rigs with 50-amp service. While the park maintains a rustic charm, essential facilities such as vault toilets and fish cleaning stations are available for convenience. For boaters, the park provides multiple boat ramps and a dump station, making it easy to manage your rig and enjoy the water in one place.

Nearby Attractions & Things to Do

The primary activity here is undoubtedly on the water. Anglers frequent the reservoir for its state-record-sized fish, specifically walleye, crappie, and northern pike. Beyond the water, history buffs can explore the nearby Rosebud Battlefield State Park, which offers insight into the region's complex tribal and military past. Bird watching is also a favorite pastime, as the reservoir attracts various migratory species. The vast acreage provides ample room for hiking along the shorelines or simply enjoying the tranquil vistas.

Who This Park Is Best For

This destination is ideal for self-contained RV travelers who prioritize natural beauty and outdoor activity over resort-style amenities. It is a haven for fishing enthusiasts and boaters who want direct access to the water without the crowds often found at more commercial lakes. Families looking for a quiet place to swim and stargaze will find the environment welcoming. If you value scenic solitude and the freedom of the Montana high plains, this park fits your travel style perfectly.