Lake Oahe Pierre, South Dakota and extends nearly as far north as Bismarck, North Dakota. Mobridge, South Dakota is located on the eastern shore of the central portion of the lake. Bridges over Lake Oahe include US Route 212 west of Gettysburg, South Dakota and US Route 12 at Mobridge. The former town of Forest City has been flooded beneath Lake Oahe, about 9 miles west of Gettysburg. Prehistoric archaeological sites have been explored in the area, including Molstad Village near Mobridge. It dates to before the emergence of the Arikara, Hidatsa and Mandan as separate peoples, and has been designated as
Hiwassee Dam bend in the river known as Fowler Bend. The dam is upstream from Apalachia Dam (which is near the Tennessee-North Carolina state line) and downstream from Chatuge Dam. Hiwassee Dam and its reservoir are surrounded by the Nantahala National Forest. Hiwassee Village, a small community that developed alongside the dam and reservoir, is located immediately south of Hiwassee Dam. North Carolina State Highway 1314 (Hiwassee Dam Access Road) crosses the top of the dam. Hiwassee Dam is a concrete gravity overflow dam high and long, and has a generating capacity of 185,000 kilowatts. The dam's spillway is controlled by seven