Mortimer Gulch Campground offers 26 first-come, first-served campsites in Helena-Lewis and Clark National Forest near Gibson Reservoir, with a primitive cement boat ramp located 0. 5 miles away that requires 4WD vehicle access.

The campground features vault toilets, fire rings, and food storage lockers, though potable water is only available seasonally (late spring through early fall) and mandatory bear-proof food storage is required.

Access via Forest Road 108 from Augusta involves approximately 26 miles of travel, with 15 miles of unpaved road, and sites cost $15 per night with a $5 fee for additional vehicles.