Omaha District Lakes and Dams
Garrison Dam & Lake Sakakawea
 Dam and Powerplant
Construction of Garrison Dam/Lake
Sakakawea began in 1947 and was completed in 1954 at a cost of
about 300 million dollars.Garrison
Dam is the fifth largest earthen dam in the United States.
The Dam
- Type – Rolled Earth Fill
- Height of Dam – 210 feet
- Length of Dam – 2.5 miles
- Width at Base - .5 miles
- Width at Top – 60 feet
- Fill Quantity – 66,500,000 cubic
yards
The Powerhouse consists of 5
generating units with a total capacity of 583.3 megawatts.These generators produce 1.8 to 2.6 billion kilowatt-hours
of electricity a year.Electrical
power is transmitted from the project through seven transmission lines to various
substations and is marketed byWestern Area Power
Administration at the Watertown Dispatch Office in South Dakota.
Walk-In Powerplant Tours:
Walk-in tours Memorial Day Weekend through Labor Day Weekend on Thursdays, Fridays, Saturdays, and Sundays at 1:00p.m. and 3:00p.m. ID required for those older than 18 years of age.
Scheduled Powerplant Tours (Off-Season):
Schools,
Scouts, Energy, and other large groups may schedule a tour
year-around by calling 701-654-7411
Click here for Facts
about Garrison Dam and Powerhouse Brochure |
