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The nearly 8100 major dams in the United States in 2006. The National Inventory of Dams defines a major dam as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3).
The Colorado, Columbia and Sacramento–San Joaquin river systems contain the greatest number of tall dams. In the eastern U.S., tall dams are less common because of the lesser vertical relief. The tallest dam in the eastern U.S. is 480-foot (150 m) Fontana Dam in North Carolina, which ranks 20th in height among all U.S. dams.
The Hoover Dam in Arizona and Nevada was the first hydroelectric power station in the United States to have a capacity of at least 1,000 MW upon completion in 1936. Since then numerous other hydroelectric power stations have surpassed the 1,000 MW threshold, most often through the expansion of existing hydroelectric facilities.
Lake Powell, impounded by Glen Canyon Dam, is the second-largest reservoir in the U.S. This is a list of largest reservoirs in the United States, including all artificial lakes with a capacity greater than or equal to 1,000,000 acre-feet (1.2 km 3). Figures given are for maximum storage capacity (flood pool) of reservoirs, not regular storage ...
Oroville Dam United States: 1968 59.6 230 4.36 819 TE/ER 9 San Luis Dam (BF Sisk Dam) United States: 1967 59.6 93 2.52 424 TE 10 Nurek Dam Tajikistan: 1980 54 300 10.5 3,200 TE 11 Samara Dam Russia: 1955 54 [4] 52 57.3 2,315 TE or ER 12 Garrison Dam [2] United States: 1954 50.8 64 29 583.3 TE 13 Cochiti Dam United States: 1975 50.2 76.5 0.73 NA ...
All major dams are linked below. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3). [3]
The Hoover Dam, when completed in 1936, was both the world's largest electric-power generating station and the world's largest concrete structure. Hoover Dam power station Hydroelectricity is, as of 2019, the second-largest renewable source of energy in both generation and nominal capacity (behind wind power ) in the United States. [ 1 ]
Averaging a major dam every 72 miles (116 km), the rivers in the Columbia watershed combine to generate over 36,000 megawatts of power, with the majority coming on the main stem. Grand Coulee Dam is the largest producer of hydroelectric power in the United States, [1] generating 6,809 megawatts, over one-sixth of all power in the basin.