Engen Reservoir   Be the first to submit input for Engen Reservoir. If you have info on Engen Reservoir, Jones County, South Dakota please submit it here to improve this web site.          These outdoors activities are available near Engen Reservoir.   Public Lands Near Engen Reservoir: Farm Island Recreation Area, South Dakota, 19 miles away Niobrara National Scenic River, O'Neil - NE, 58 miles away   Marinas On or Near Engen Reservoir: Downs Marina, Pierre, 17 miles away   Hotels Near Engen Reservoir: Holiday Inn Express Hotel & Suites PIERRE-FORT PIERRE, Fort Pierre, 17 miles away Super 8 Pierre SD, Pierre, 18 miles away Comfort Inn Pierre, Pierre, 18 miles away Pierre Inn and Suites, Pierre, 18 miles away Days Inn Pierre, Pierre, 18 miles away