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
Leasburg Dam State Park Jornada del Muerto, the nearby site of a 19th-century army outpost is a reminder of a time not too long ago. Leasburg Dam State Park offers year-round camping, picnicking, and birdwatching. From about mid-March to mid-October the park is also a venue for fishing, canoeing, and kayaking in the Rio Grande. The dam channels water from the Rio Grande for irrigation in the Mesilla Valley. Nearby a museum and a number of trails are located near Fort Seldon State Monument. Leasburg Dam State Park Leasburg Dam State Park is a state park of New Mexico, United States, located on the