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Collapse All Expand All
Since its opening in 1960, Garrison Dam has provided the hydropower and flood control potential envisioned by Colonel Pick and others who directed its development. USACE has worked with the Bureau of Reclamation to use Garrison pool to irrigate 250,000 acres. The Garrison Dam has also provided a steady flow of water for navigation as well as generating hydropower.
The power plant has five generating units that produce an annual average 2.6 million mega-watt hours of electricity, valued in excess of $39 million in revenue. Electricity is transmitted from the power plant through seven transmission lines to various substations and is marketed by Western Area Power Administration.
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Characteristics and Value
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Generators/Turbines
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5 Francis Turbines, 90 rpm
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Nameplate Capacity
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583.3 MW
· 3 units: 121.6 MW
· 2 units: 109.3 MW
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Percent of NWO Capacity
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23.32%
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Average Gross Head Available
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161 ft
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Number & size of conduits
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5-29’ dia.- 25’ penstocks
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Surge Tanks
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65’ dia. - 2 per penstock
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Discharge Capacity
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150 feet at 41,000 cfs
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Average annual energy
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2,259 M kWh
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Missouri River region daily river bulletin - main stem reservoirs, selected tributary reservoirs and selected river gage readings
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Midnight water temperature readings for the main stem reservoirs for about the last 30 days
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The Missouri Basin River Forecast Center is part of a network of 13 River Forecast Centers across the U.S. River Forecast Centers collect, process and provide forecasts and information about water resources for major river basins across the country.
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Boat ramp elevation readings for Fort Peck, Garrison, Oahe and Fort Randall Projects.
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TItle 36, Parks, Forests, & Public Property, Chapter 3; Code of Federal Regs. - Rules and regulations for public use including hunting and recreation activities on USACE water resource development projects.
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The Dam Safety Program seeks to ensure that USACE owned and operated dams do not present unacceptable risks to people, property, or the environment, with the emphasis on people.
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Missouri River Recovery Program
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Website offering information about Corps lakes nationwide.
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Recreation.gov includes information on Federal government managed & Federal government affiliated (subordinate, subsidiary or member) sites. Content focuses on nature-based, historic & cultural activities commonly available on federally managed lands.
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