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,
Whipple Dam State Park Whipple Dam State Park Whipple Dam State Park is a Pennsylvania state park on in Jackson Township, Huntingdon County, Pennsylvania in the United States. Whipple Lake is a man-made lake on that was originally built during the height of the lumber era that swept through Pennsylvania in the late 19th and early 20th century to supply power for a sawmill. Whipple Dam State Park is south of State College, just east of Pennsylvania Route 26. The land on which Whipple Dam State Park is located was purchased from the Iroquois Confederation in 1754 by the Proprietary Government of Pennsylvania. Eventually