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
Norris Dam State Park power, providing cheap electricity and allowing the area to modernize to a considerable extent. The city of Norris, located a few miles south of the dam, was developed as a planned city alongside the dam project. The construction of Norris Dam began on October 1, 1933 and its gates were closed on March 4, 1936. The east section of Norris Dam State Park was developed in the 1930s by the Civilian Conservation Corps as a "demonstration recreational project" of the Tennessee Valley Authority. The CCC built a lodge, several rustic cabins, and an amphitheater. The land was sold to the