Johnson Reservoir   Be the first to submit input for Johnson Reservoir. If you have info on Johnson Reservoir, Sheridan County, Nebraska please submit it here to improve this web site.          These outdoors activities are available near Johnson Reservoir.   Public Lands Near Johnson Reservoir: Badlands National Park, Interior - SD, 51 miles away   Camp Grounds Near Johnson Reservoir: Hamilton Park Campground, Sheridan County, 6 miles away Tomahawk Park Campground, Sheridan County, 6 miles away Otis Motel and Trailer Court, Gordon, 7 miles away