Boundary Reservoir   Be the first to submit input for Boundary Reservoir. If you have info on Boundary Reservoir, Powder River County, Montana please submit it here to improve this web site.          These outdoors activities are available near Boundary Reservoir.   Camp Grounds Near Boundary Reservoir: Cow Creek Campground, Powder River County, 8 miles away   Hotels Near Boundary Reservoir: Super 8 Colstrip, Colstrip, 46 miles away Lakeview Bed & Breakfast, Colstrip, 46 miles away   Ski Areas Near Boundary Reservoir: Antelope Butte, Wyoming, 80 miles away       1000 foot drop, 3 lifts, 18 runs Big Horn, Wyoming, 87 miles away       800 foot drop, 3 lifts, 20 runs