Long Reservoir   Be the first to submit input for Long Reservoir. If you have info on Long Reservoir, Carter County, Montana please submit it here to improve this web site.          These outdoors activities are available near Long Reservoir.   Public Lands Near Long Reservoir: Medicine Rocks State Park, Montana, 19 miles away Devils Tower National Monument, Devils Tower - WY, 54 miles away   Camp Grounds Near Long Reservoir: Ekalaka Park Campground, Carter County, 6 miles away Macnab Campground, Carter County, 10 miles away   Hotels Near Long Reservoir: Best Western Devils Tower Inn, Hulett, 48 miles away   Ski Areas Near Long Reservoir: Terry Peak, South Dakota, 79 miles away       1100 foot drop, 6 lifts, 24 runs