Hydroelectric Dams

2,099 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Dayton Hollow Dam Otter Tail	Low Hazard	35 ft	1909	Gravity	Minnesota
Dayville Dike Windham	Low Hazard	14 ft	1925	Earth	Connecticut
Dead End Dawson	Low Hazard	23 ft	1941	Earth	Nebraska
Deadwood Valley	High Hazard	143 ft	1931	Concrete	Idaho
Deep Creek Dam Garrett	High Hazard	85 ft	1925	Earth	Maryland
Deerfield No. 2 Franklin	Low Hazard	76 ft	1913	Concrete	Massachusetts
Deerfield No. 3 Franklin	Low Hazard	12 ft	1912	Concrete	Massachusetts
Deerfield No. 4 Franklin	Low Hazard	48 ft	1912	Concrete	Massachusetts
Deerfield No. 5 Franklin	Low Hazard	32 ft	1992	Concrete	Massachusetts
Deer Rips Androscoggin	Low Hazard	54 ft	1903	Concrete	Maine
Deferiet Jefferson	Low Hazard	18 ft	1899	Buttress	New York
DeGray Dam Clark	High Hazard	—	1969	Earth	Arkansas
DeGray Dam - Saddle Dike Clark	High Hazard	—	1969	Earth	Arkansas
DeGray Reregulation Dam Clark	High Hazard	—	1971	Gravity	Arkansas
Delano Island Jefferson	Low Hazard	12 ft	1924	Concrete	New York
Dells Eau Claire	Low Hazard	40 ft	1907	Gravity	Wisconsin
Denley Lewis	Low Hazard	29 ft	1912	Concrete	New York
DePere Lock and Dam Brown	Significant Hazard	—	1929	Concrete	Wisconsin
De Sabla Forebay Butte	Low Hazard	52 ft	1962	Earth	California
Desert Creek Dam Crook	Low Hazard	46 ft	—	Earth	Oregon
Detroit Dam Linn	High Hazard	369 ft	1953	Gravity	Oregon
Deuses Pond Dam Middlesex	Significant Hazard	20 ft	1916	Masonry	Connecticut
Development No. 1 Dam Multnomah	High Hazard	200 ft	1929	Concrete	Oregon
Development No. 2 Dam Clackamas	High Hazard	145 ft	1962	Rockfill	Oregon
Devil Canyon Second Afterbay San Bernardino	Low Hazard	40 ft	1995	Earth	California
Dewey Forebay Municipality of Skagway	Low Hazard	30 ft	1905	Timber Crib	Alaska
Deweys Mills Windsor	Low Hazard	25 ft	1900	Concrete	Vermont
Dexter Dam Lane	High Hazard	65 ft	1955	Earth	Oregon
Dexter Middle Channel Dam Jefferson	Low Hazard	11 ft	1925	Concrete	New York
Dexter North Channel Dam Jefferson	Low Hazard	14 ft	1925	Concrete	New York
Dexter South Channel Dam Jefferson	Low Hazard	20 ft	1925	Concrete	New York
Diablo Whatcom	High Hazard	389 ft	1929	Concrete	Washington
Diamond Island Diversion Dam Jefferson	Low Hazard	13 ft	1914	Concrete	New York
Dicks Creek Dam Macon	Low Hazard	16 ft	1942	Rockfill	North Carolina
Dillon Summit	High Hazard	231 ft	1963	Earth	Colorado
Diversion Dam Lincoln	Low Hazard	21 ft	1941	Concrete	Nebraska
Dixon Lee	Low Hazard	16 ft	1924	Rockfill	Illinois
Dix River Dam Mercer	High Hazard	287 ft	1925	Rockfill	Kentucky
D Mill At Ticonderoga Dam Essex	Significant Hazard	20 ft	1981	Concrete	New York
Dodge Falls Grafton	Low Hazard	18 ft	1905	Timber Crib	New Hampshire
Dolby Penobscot	High Hazard	66 ft	1906	Concrete	Maine
Dole Pond Somerset	Low Hazard	19 ft	1930	Concrete	Maine
Dolgeville Herkimer	Low Hazard	20 ft	1897	Gravity	New York
Donnells Tuolumne	High Hazard	317 ft	1958	Concrete	California
Don Pedro Main Tuolumne	High Hazard	585 ft	1971	Earth	California
Dorena Dam Lane	High Hazard	135 ft	1949	Earth	Oregon
Dos Bocas Dam Arecibo	High Hazard	188 ft	1942	Gravity	Puerto Rico
Douglas Dam Sevier	High Hazard	141 ft	1943	Concrete	Tennessee
Downers Mill Windsor	Low Hazard	14 ft	1983	Gravity	Vermont
Drinkwater Los Angeles	Significant Hazard	105 ft	1923	Earth	California