Oahe Dam dam upstream is Garrison Dam, near Riverdale, North Dakota, and the next dam downstream is Big Bend Dam, near Fort Thompson, South Dakota. In September and October 1804, the Lewis and Clark Expedition passed through what is now Lake Oahe while exploring the Missouri River. Oahe Dam was authorized by the Flood Control Act of 1944, and construction by the United States Army Corps of Engineers began in 1948. The world’s first rock tunnel boring machine (TBM) was invented in 1952 by James S. Robbins for the Oahe Dam project, which marked the beginning of machines replacing human tunnelers. The
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