Johnson Reservoir   Be the first to submit input for Johnson Reservoir. If you have info on Johnson Reservoir, Dawson County, Montana please submit it here to improve this web site.          These outdoors activities are available near Johnson Reservoir.   Public Lands Near Johnson Reservoir: Makoshika State Park, Montana, 31 miles away   Hotels Near Johnson Reservoir: Knights Inn Glendive, Glendive, 29 miles away Comfort Inn Glendive, Glendive, 29 miles away Days Inn Glendive, Glendive, 29 miles away Super 8 Glendive, Glendive, 29 miles away