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
Leasburg Dam State Park Leasburg Dam State Park Leasburg Dam State Park is a state park of New Mexico, United States, located on the Rio Grande. It provides opportunities for camping, hiking, picnicking, swimming, and wildlife viewing. Nearby is the historic Fort Seldon State Monument, and to the south is the city of Las Cruces. The dam at Leasburg was completed in 1908. Its purpose is not to hold back the flow of the river, but instead to divert it into a system of canals for use by nearby farms. Known for its rich history, early settlers used the area as a passage to