Hydroelectric Dams

2,099 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Claytor Pulaski	High Hazard	94 ft	1939	Gravity	Virginia
Clear Branch Hood River	High Hazard	110 ft	1969	Rockfill	Oregon
Clear Lake Lake	Low Hazard	35 ft	1914	Concrete	California
Clear Lake Clear Creek	High Hazard	19 ft	1908	Earth	Colorado
Clearwater No 1 Forebay Douglas	Low Hazard	17 ft	1953	Earth	Oregon
Clearwater No 2 Forebay Douglas	High Hazard	13 ft	1953	Earth	Oregon
Clement Dam Belknap	Significant Hazard	26 ft	1901	Concrete	New Hampshire
Cliff Lake Sullivan	High Hazard	36 ft	1930	Concrete	New York
Clifford Washington	Low Hazard	15 ft	1971	Timber Crib	Maine
Clifton No. 3 Spartanburg	Low Hazard	33 ft	1899	Gravity	South Carolina
Cloquet Carlton	Low Hazard	47 ft	1899	Concrete	Minnesota
Cocheco Falls Strafford	Significant Hazard	9 ft	1930	Concrete	New Hampshire
Cochnewagon Kennebec	Significant Hazard	9 ft	1900	Concrete	Maine
Cochrane Cascade	High Hazard	100 ft	1957	Gravity	Montana
Cody Pond Dam Oswego	Low Hazard	14 ft	—	Earth	New York
Cogswell Los Angeles	High Hazard	266 ft	1935	Rockfill	California
Colby Mills Lincoln	Low Hazard	16 ft	1825	Concrete	Maine
Colebrook River Dam Litchfield	High Hazard	223 ft	1969	Gravity	Connecticut
Coleman Falls Bedford	Low Hazard	20 ft	1851	Gravity	Virginia
Coleman Forebay Shasta	Low Hazard	20 ft	1911	Earth	California
Coleridge Randolph	Low Hazard	12 ft	1913	Gravity	North Carolina
Collett Lassen	Significant Hazard	40 ft	1991	Earth	California
Colliersville Otsego	High Hazard	35 ft	1908	Concrete	New York
Collins Hampden	Low Hazard	11 ft	1984	Gravity	Massachusetts
Colton St. Lawrence	High Hazard	29 ft	1919	Gravity	New York
Columbia Diversion Dam Richland	Significant Hazard	14 ft	1882	Timber Crib	South Carolina
Combined Locks Outagamie	Significant Hazard	23 ft	1912	Gravity	Wisconsin
Comerford Grafton	High Hazard	170 ft	1930	Concrete	New Hampshire
Comerio I Dam Comerío	High Hazard	47 ft	1907	Gravity	Puerto Rico
Comerio II Dam Comerío	High Hazard	128 ft	1913	Buttress	Puerto Rico
Comtu Falls Windsor	Significant Hazard	4 ft	1902	Gravity	Vermont
Concow Butte	High Hazard	94 ft	1925	Arch	California
Conemaugh Dam Westmoreland	High Hazard	—	1952	Gravity	Pennsylvania
Cone Mills Dam Rutherford	Low Hazard	—	1900	Concrete	North Carolina
Congdon Pond Dam New London	Significant Hazard	35 ft	1900	Earth	Connecticut
Conklingville Saratoga	High Hazard	100 ft	1930	Earth	New York
Conowingo Cecil	High Hazard	94 ft	1928	Concrete	Maryland
Constantine St. Joseph	High Hazard	11 ft	1873	Gravity	Michigan
Cooke Iosco	High Hazard	50 ft	1912	Gravity	Michigan
Coolemee Rowan	Low Hazard	14 ft	1902	Masonry	North Carolina
Cooper Dev - Pinopolis Dam Berkeley	High Hazard	75 ft	1942	Earth	South Carolina
Cooper Lake Kenai Peninsula Borough	High Hazard	52 ft	1959	Earth	Alaska
Copco No 1 Siskiyou	High Hazard	230 ft	1922	Gravity	California
Copco No 2 Siskiyou	Low Hazard	27 ft	1925	Gravity	California
Cordell Hull Lock and Dam Smith	High Hazard	—	1973	Gravity	Tennessee
Cornell Chippewa	Significant Hazard	58 ft	1913	Gravity	Wisconsin
Cottonwood #1 Mesa	High Hazard	31 ft	1894	Earth	Colorado
Cottonwood #4 Mesa	High Hazard	17 ft	1896	Earth	Colorado
Cottonwood #5 Mesa	High Hazard	22 ft	1909	Earth	Colorado
Cottonwood Canyon Lincoln	Low Hazard	31 ft	1941	Earth	Nebraska