Garrison Dam is an earth-fill embankment dam on the Missouri River in central North Dakota, U.S.. Constructed by the U.S. Army Corps of Engineers from 1947 to 1953, at over 2 miles (3.2 km) in length, the dam is the fifth-largest earthen dam in the world.
Garrison Dam is located between Riverdale and Pick City, named after the town of Garrison, directly north of the dam, across the reservoir. The dam is approximately midway between Bismarck and Minot, about 10 miles (16 km) west of U.S. Highway 83.
Hydropower turbines at Garrison Dam have an electric power generating nameplate capacity of 583.3 MW. Average production of 240 MW serves several hundred thousand customers.
The Garrison Dam National Fish Hatchery is the world's largest walleye and northern pike producing facility and also works to restore endangered species, such as the pallid sturgeon. More details
