Happy Coulee Reservoir   Be the first to submit input for Happy Coulee Reservoir. If you have info on Happy Coulee Reservoir, Powder River County, Montana please submit it here to improve this web site.          These outdoors activities are available near Happy Coulee Reservoir.   Hotels Near Happy Coulee Reservoir: Super 8 Colstrip, Colstrip, 49 miles away Lakeview Bed & Breakfast, Colstrip, 49 miles away   Ski Areas Near Happy Coulee Reservoir: Antelope Butte, Wyoming, 83 miles away       1000 foot drop, 3 lifts, 18 runs Big Horn, Wyoming, 89 miles away       800 foot drop, 3 lifts, 20 runs