Hydroelectric Dams

2,099 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Parker La Paz	High Hazard	320 ft	1938	Concrete	Arizona
Parker Basin #3 Mesa	High Hazard	31 ft	1899	Earth	Colorado
Park Mill Marinette	Low Hazard	24 ft	1920	Concrete	Michigan
Parr Shoals Dam Newberry	High Hazard	52 ft	1914	Gravity	South Carolina
Parson's Mill Androscoggin	Low Hazard	10 ft	1860	Concrete	Maine
Passumpsic Caledonia	Low Hazard	11 ft	1929	Concrete	Vermont
Patch Pond Rutland	Significant Hazard	30 ft	1921	Concrete	Vermont
Pathfinder Natrona	High Hazard	214 ft	1909	Masonry	Wyoming
Pathfinder Dike Natrona	High Hazard	24 ft	1909	Earth	Wyoming
Patillas Dam Patillas	High Hazard	127 ft	1976	Concrete	Puerto Rico
Patterson Beaver	Low Hazard	14 ft	1825	Timber Crib	Pennsylvania
Pawtucket Dam Middlesex	Low Hazard	16 ft	1848	Masonry	Massachusetts
Pawtucket Lower Providence	Significant Hazard	4 ft	1894	Masonry	Rhode Island
Peacham Pond Caledonia	Significant Hazard	26 ft	1930	Earth	Vermont
Peavy Falls Iron	High Hazard	78 ft	1943	Concrete	Michigan
P.E.C. Headworks Grant	Significant Hazard	90 ft	1990	Concrete	Washington
Peck Lake Dam Fulton	High Hazard	39 ft	1910	Buttress	New York
Pejepscot Sagadahoc	Significant Hazard	48 ft	1896	Timber Crib	Maine
Pella Shawano	Low Hazard	18 ft	1883	Gravity	Wisconsin
Pellejas Dam Adjuntas	High Hazard	50 ft	1950	Gravity	Puerto Rico
Pelton Jefferson	High Hazard	204 ft	1957	Arch	Oregon
Pelton Regulating Jefferson	High Hazard	40 ft	1958	Gravity	Oregon
Pembroke Merrimack	Low Hazard	26 ft	1891	Masonry	New Hampshire
Penacook Lower Falls Diversion Merrimack	Low Hazard	15 ft	1982	Concrete	New Hampshire
Penacook Upper Falls Merrimack	Low Hazard	23 ft	1987	Concrete	New Hampshire
Pennessewassee Stream Oxford	Low Hazard	19 ft	1935	—	Maine
Penobscot Lake Somerset	Low Hazard	14 ft	1916	Concrete	Maine
Pepperell Paper Middlesex	High Hazard	24 ft	1918	—	Massachusetts
Peshtigo Marinette	Low Hazard	19 ft	1907	Gravity	Wisconsin
Petenwell Juneau	High Hazard	46 ft	1949	Gravity	Wisconsin
Peterson Chittenden	High Hazard	51 ft	1949	Concrete	Vermont
Philadelphia - Nonoverflow Section Jefferson	Significant Hazard	13 ft	1910	Gravity	New York
Philbrook Main Butte	High Hazard	87 ft	1926	Earth	California
Phillips Gosper	Low Hazard	31 ft	1941	Earth	Nebraska
Philpott Dam Franklin	High Hazard	—	1953	Gravity	Virginia
Phlox Langlade	Significant Hazard	25 ft	1878	Gravity	Wisconsin
Phoenix Lock & Dam No. 1 Oswego	Significant Hazard	11 ft	1914	Concrete	New York
Pickerel Canal Oneida	Low Hazard	12 ft	1937	Gravity	Wisconsin
Pickwick Landing Dam Hardin	High Hazard	51 ft	1938	Concrete	Tennessee
Piedmont Anderson	High Hazard	26 ft	1874	Gravity	South Carolina
Pierce Hillsborough	Low Hazard	12 ft	1921	Buttress	New Hampshire
Piercefield St. Lawrence	High Hazard	22 ft	1914	Concrete	New York
Pierce Mills Caledonia	Low Hazard	18 ft	1928	Concrete	Vermont
Pierce Pond Dam Somerset	Low Hazard	10 ft	1920	Timber Crib	Maine
Pillager Cass	High Hazard	22 ft	1917	Gravity	Minnesota
Pine Florence	Low Hazard	41 ft	1922	Concrete	Wisconsin
Pine Flat Dam Fresno	High Hazard	412 ft	1954	Gravity	California
Pine Grove Lancaster	High Hazard	65 ft	1949	Earth	Pennsylvania
Pine River Waushara	Low Hazard	16 ft	1856	Earth	Wisconsin
Piney Clarion	High Hazard	125 ft	1924	Concrete	Pennsylvania