Water Gap Reservoir   Be the first to submit input for Water Gap Reservoir. If you have info on Water Gap Reservoir, Rosebud County, Montana please submit it here to improve this web site.          These outdoors activities are available near Water Gap Reservoir.   Public Lands Near Water Gap Reservoir: Tongue River Reservoir State Park, Montana, 36 miles away   Camp Grounds Near Water Gap Reservoir: Cow Creek Campground, Powder River County, 3 miles away   Hotels Near Water Gap Reservoir: Super 8 Colstrip, Colstrip, 38 miles away Lakeview Bed & Breakfast, Colstrip, 38 miles away   Ski Areas Near Water Gap Reservoir: Antelope Butte, Wyoming, 74 miles away       1000 foot drop, 3 lifts, 18 runs Big Horn, Wyoming, 84 miles away       800 foot drop, 3 lifts, 20 runs