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Recreation Region: Dillon Ranger District

Reservoir Lake Campground and Picnic Area

This is a nice high elevation lakeside campground. Reservoir Lake Campground and day use picnic area sits along the lake's south shores. The campground and day use areas have vault toilets, drinking water, and a boat ramp. 

Scenic trails are offered for hiking. Fishing, swimming, and boating are also among the activities to be enjoyed at the campground. There are 16 designated campsites, as well as accessible restrooms and drinking water. Average parking apron size is 15' X 61'. Parking aprons are dirt. Interior road is narrow in places with trees close to roadway. 

Current Conditions
Drinking water is currently unavailable at this campground.

General Information

  • Pets are allowed if on a leash. This is a pack it in, pack it out campsite. Please limit your stay to 16 days.
  • Reservoir Lake is 11 acres and is non-motorized only. Boat ramp is primitive.


Annually from mid-June through September, weather dependent.

Annually from mid-June through September, weather dependent.

Overnight Use:
Single Site: $15 per night

There is a $15.00/night fee for this campground, with an additional $5.00 fee for extra vehicles.

Dillon Ranger District office building

Address: 420 Barrett Street Dillon, MT 59725
Phone: 406-683-3900
Hours: Monday to Friday, 8 a.m. to 4:30 p.m. (Closed on federal holidays)

Getting There

Latitude / Longitude

Latitude: 45.12381

Longitude: -113.44822

Elevation

7,000

Directions

From Dillon go South on Interstate 15 for 19 miles. Take Highway 324 west 17 miles. Turn onto Forest Road 181 and continue for 18 miles following signs to the lake.

Travel Considerations

Campground not accessible by wheeled vehicles during winter months.  From Dillon, winter parking lot is approximately 5 miles from the campground. 

Facility and Amenity Information

Restrooms

Restrooms are available at this site.

Water

Potable water is not available at this site.

Drinking water is currently unavailable at this campground.

Picnic Tables

Picnic tables are available at this site.

Other Amenities

Bear-resistant food storage boxes are available, but there are no garbage services here.

Recreation Opportunities

Hiking Hiking
Picnicking Picnicking
Hunting, Fishing and Shooting Hunting, Fishing and Shooting
Water Activities Water Activities

Day HikesDay Hikes

Picnicking - SinglePicnicking - Single
Picnicking - GroupsPicnicking - Groups

Fishing - IceFishing - Ice
Fishing - River/StreamFishing - River/Stream
Fishing - Lake & PondFishing - Lake & Pond

SwimmingSwimming
Boating - Non-MotorizedBoating - Non-Motorized

Last updated July 30th, 2025