Oahe Dam Oahe Dam The Oahe Dam is a large earthen dam on the Missouri River, just north of Pierre, South Dakota, United States. The dam creates Lake Oahe, the fourth largest man-made reservoir in the United States. The reservoir stretches up the course of the Missouri to Bismarck, North Dakota. The dam's power plant provides electricity for much of the north-central United States. It is named for the Oahe Indian Mission established among the Lakota Sioux in 1874. The project provides flood control, Hydropower generation, irrigation, and navigation benefits. Oahe Dam is one of six Missouri River mainstem dams, the next
McCalls Dam State Park at Watsontown. The park's facilities were originally constructed by the Civilian Conservation Corps in the 1933. The mill and dam are long since gone, but they are remembered along with Johnny McCall in the name of McCalls Dam State Park. The following state parks are within of McCalls Dam State Park: McCalls Dam State Park McCalls Dam State Park is a Pennsylvania state park on in Miles Township, Centre County, Pennsylvania in the United States. The park is in the easternmost tip of Centre County, south of Clinton County and north of Union County. McCalls Dam State Park is in