Hydroelectric Dams

2,099 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
John H. Kerr Dam Mecklenburg	High Hazard	—	1953	Gravity	Virginia
John Hollis Bankhead Lock and Dam Tuscaloosa	High Hazard	—	1975	Gravity	Alabama
Johnson Falls Marinette	High Hazard	43 ft	1923	Gravity	Wisconsin
Johnson Lake East Dike Gosper	Low Hazard	14 ft	1941	—	Nebraska
Johnsonville Rensselaer	High Hazard	39 ft	1909	Concrete	New York
Jordan Elmore	High Hazard	125 ft	1928	Gravity	Alabama
Josephine Aroostook	High Hazard	31 ft	1967	Earth	Maine
J. Percy Priest Dam Davidson	High Hazard	—	1967	Concrete	Tennessee
J. Strom Thurmond Dam McCormick	High Hazard	124 ft	1954	Concrete	Georgia
Junction El Dorado	Significant Hazard	168 ft	1962	Concrete	California
Junction Falls Pierce	Significant Hazard	32 ft	1920	Gravity	Wisconsin
Justesen Reservoir #1 Sherman	Low Hazard	21 ft	1985	—	Oregon
Kamargo Jefferson	Low Hazard	12 ft	1920	Concrete	New York
Kankakee Kankakee	Low Hazard	10 ft	1915	Concrete	Illinois
Kaukauna Outagamie	High Hazard	9 ft	1940	Gravity	Wisconsin
Kaukauna Locks and Dam Outagamie	Significant Hazard	—	1931	Concrete	Wisconsin
Kaw Dam Osage	High Hazard	125 ft	1976	Gravity	Oklahoma
Kayuta Oneida	High Hazard	19 ft	1894	Timber Crib	New York
Kearney Dam Buffalo	High Hazard	27 ft	1885	Earth	Nebraska
Keene Creek Jackson	High Hazard	67 ft	1958	Earth	Oregon
Kelley'S Falls Dam Hillsborough	High Hazard	31 ft	1916	Concrete	New Hampshire
Kelly Lake Placer	High Hazard	23 ft	1928	Earth	California
Keno Klamath	Low Hazard	41 ft	1967	Gravity	Oregon
Kents Falls Clinton	High Hazard	59 ft	1991	Concrete	New York
Kentucky Dam Livingston	High Hazard	206 ft	1944	Concrete	Kentucky
Kentucky River Lock and Dam No. 7 Estill	Significant Hazard	35 ft	1906	—	Kentucky
Keowee Oconee	High Hazard	170 ft	1971	Earth	South Carolina
Kerckhoff Madera	Low Hazard	114 ft	1920	Concrete	California
Kern Diversion Kern	Low Hazard	29 ft	1906	Concrete	California
Kesslen York	Low Hazard	18 ft	1954	Concrete	Maine
Keswick Shasta	High Hazard	157 ft	1949	Concrete	California
Ketchikan Lakes Ketchikan Gateway Borough	High Hazard	34 ft	1957	Rockfill	Alaska
Keystone Dam Tulsa	High Hazard	121 ft	1964	Gravity	Oklahoma
Keystone Diversion Keith	Low Hazard	20 ft	1935	Earth	Nebraska
Kezar Lake Outlet Oxford	Low Hazard	12 ft	1924	Concrete	Maine
Kidd Lake Auxiliary Placer	High Hazard	15 ft	1850	Earth	California
Kilbourn Columbia	High Hazard	61 ft	1909	Gravity	Wisconsin
Kingfield Franklin	Low Hazard	14 ft	1811	Concrete	Maine
Kings Lincoln	High Hazard	29 ft	1910	Gravity	Wisconsin
Kingsbury Washington	Low Hazard	10 ft	1971	Gravity	Vermont
Kingsford Dickinson	Low Hazard	38 ft	1924	Concrete	Michigan
Kingsford Florence	Significant Hazard	35 ft	1925	Gravity	Wisconsin
Kingsley Keith	High Hazard	162 ft	1941	Earth	Nebraska
Kingston Green Lake	High Hazard	16 ft	1848	Earth	Wisconsin
Kinneytown New Haven	Significant Hazard	21 ft	1913	Gravity	Connecticut
Kinzua Dam Warren	High Hazard	—	1965	Rockfill	Pennsylvania
Kinzua Upper Reservoir Dike Warren	High Hazard	113 ft	1970	Rockfill	Pennsylvania
Kleber Cheboygan	Low Hazard	46 ft	1948	Gravity	Michigan
Knapple Gosper	Low Hazard	33 ft	1941	Earth	Nebraska
Knife Falls North Channel Dam Carlton	Low Hazard	18 ft	1922	Earth	Minnesota