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,
Beaver Dam State Park (Nevada) dam in 1961. After Schroeder Lake was washed out by flood in 2005, the reservoir was not rebuilt. In 2009, the reservoir was drained and Beaver Dam Wash was restored to its natural state. The park has picnicking facilities, campgrounds, trout fishing in beaver ponds and streams, and hiking trails. The Overlook Trail offers a 360° view of the park. Beaver Dam State Park (Nevada) Beaver Dam State Park is a public recreation area encompassing more than along Beaver Dam Wash in Lincoln County, Nevada. The state park is on the Nevada/Utah state line about east of the town of