Garrison Dam, Hydroelectric power station and embankment dam in Riverdale, North Dakota.
The structure extends 2.5 miles (4 kilometers) across the Missouri River, reaches 210 feet (64 meters) in height, and measures half a mile (800 meters) wide at its base with multiple generating turbines.
Work on the $300 million project started in 1947 as part of the Pick-Sloan Plan for flood control and power generation, with President Eisenhower dedicating the finished facility in June 1953.
The Three Affiliated Tribes lost one-fourth of their Fort Berthold Reservation when the dam project formed Lake Sakakawea during the 1950s.
Guided tours of the power plant run Thursday through Saturday from June to August, requiring advance reservations and government-issued photo identification for visitors aged 18 and older.
The associated fish hatchery produces more walleye and northern pike than any other facility worldwide, supplying waters across multiple states with young fish for stocking programs.
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