Garrison Dam Tribes. Construction on the $300-million dam project began in 1947, and its embankment was enclosed in April 1953. The dam was dedicated by President Eisenhower two months later. The Corps of Engineers completed earthwork in the fall of 1954. Garrison Dam is one of six Missouri River Main stem dams operated by the U.S. Army Corps of Engineers, Omaha District. The dam upstream of Garrison Dam is Fort Peck Dam (near Fort Peck, Montana). The dams downstream of Garrison Dam are: Oahe Dam (near Pierre, South Dakota), Big Bend Dam (near Fort Thompson, South Dakota), Fort Randall Dam (near Pickstown,
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