Semroska Reservoir   Be the first to submit input for Semroska Reservoir. If you have info on Semroska Reservoir, Sioux County, Nebraska please submit it here to improve this web site.          These outdoors activities are available near Semroska Reservoir.   Lakes Near Semroska Reservoir: Board Gate Dam Reservoir, Dawes County, 16 miles away Carter P Johnson Lake, Sioux County, 20 miles away   Public Lands Near Semroska Reservoir: Fort Robinson State Park, Nebraska, 22 miles away Adams Homestead and Nature Preserve, South Dakota, 24 miles away Angostura Recreation Area, South Dakota, 31 miles away Agate Fossil Beds National Monument, Harrison - NE, 16 miles away Wind Cave National Park, Hot Springs - SD, 30 miles away Jewel Cave National Monument, Custer - SD, 42 miles away   Hotels Near Semroska Reservoir: Super 8 Hot Springs, Hot Springs, 29 miles away Usa Stay Hotel Suites, Hot Springs, 29 miles away Americas Best Value Inn, Hot Springs, 30 miles away Best Western Sundowner Inn, Hot Springs, 30 miles away Budget Host Hills Hot Springs, Hot Springs, 30 miles away