Ash Tree Reservoir   Be the first to submit input for Ash Tree Reservoir. If you have info on Ash Tree Reservoir, Harding County, South Dakota please submit it here to improve this web site.          These outdoors activities are available near Ash Tree Reservoir.   Public Lands Near Ash Tree Reservoir: Theodore Roosevelt National Park, Medora - ND, 46 miles away   Campgrounds Near Ash Tree Reservoir: Picnic Spring Campground, Harding County, 4 miles away Butte View Campground, Bowman, 18 miles away   Hotels Near Ash Tree Reservoir: Super 8 Bowman, Bowman, 18 miles away Americinn - Medora, Nd, Medora, 48 miles away