Hydroelectric Dams

2,099 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Pingree Pond Piscataquis	Low Hazard	16 ft	1900	Concrete	Maine
Pioneer Somerset	Low Hazard	12 ft	1890	Concrete	Maine
Pisgah Otter Tail	Low Hazard	26 ft	1918	Gravity	Minnesota
Pit No. 1 Diversion Shasta	Low Hazard	18 ft	1922	Concrete	California
Pit No. 1 Forebay Shasta	High Hazard	47 ft	1947	Earth	California
Pit No. 3 Diversion Shasta	High Hazard	135 ft	1925	Concrete	California
Pit No. 4 Diversion Shasta	High Hazard	110 ft	1927	Concrete	California
Pit No. 5 Diversion Shasta	Low Hazard	58 ft	1944	Concrete	California
Pit No. 5 Open Conduit Shasta	High Hazard	71 ft	1944	Earth	California
Pit No. 6 Diversion Shasta	High Hazard	195 ft	1965	Concrete	California
Pit No. 7 Afterbay Shasta	Significant Hazard	25 ft	1965	Rockfill	California
Pit No. 7 Diversion Shasta	High Hazard	228 ft	1965	Concrete	California
Pit River Weir Shasta	Low Hazard	8 ft	1921	Concrete	California
Pixley Price	High Hazard	21 ft	1918	Gravity	Wisconsin
Pleasant Lake Washington	Low Hazard	15 ft	1900	Timber Crib	Maine
Pleasant Valley Inyo	High Hazard	87 ft	1957	Earth	California
Pocono Lake Monroe	Significant Hazard	47 ft	1957	Gravity	Pennsylvania
Poe Butte	Low Hazard	80 ft	1958	Concrete	California
Point A Covington	High Hazard	41 ft	1925	Gravity	Alabama
Ponderosa Butte	Low Hazard	157 ft	1962	Earth	California
Pontook Coos	Low Hazard	15 ft	1909	Timber Crib	New Hampshire
Portal Forebay Dike Fresno	Low Hazard	18 ft	1956	Earth	California
Port Edwards Wood	Low Hazard	22 ft	1855	Gravity	Wisconsin
Portland Ionia	Low Hazard	9 ft	1919	Gravity	Michigan
Port Leyden Lewis	Low Hazard	32 ft	1983	Concrete	New York
Post Falls Earth Dike Kootenai	High Hazard	16 ft	1990	Earth	Idaho
Post Falls North Channel Kootenai	High Hazard	31 ft	1906	Gravity	Idaho
Post Falls South Channel Kootenai	High Hazard	25 ft	1906	Gravity	Idaho
Potato Rapids Marinette	Low Hazard	19 ft	1920	Gravity	Wisconsin
Potomac Dam No. 5 Washington	Significant Hazard	20 ft	1830	Earth	Maryland
Potomac River Dam #4 Washington	Significant Hazard	20 ft	1869	Gravity	Maryland
Potsdam - East Dam St. Lawrence	Low Hazard	7 ft	1903	Masonry	New York
Potsdam - West Dam St. Lawrence	Low Hazard	11 ft	1990	Concrete	New York
Powder Mill Hillsborough	Low Hazard	21 ft	1924	Concrete	New Hampshire
Powder Mill Worcester	Low Hazard	10 ft	1908	Gravity	Massachusetts
Powell Falls Pierce	Low Hazard	21 ft	1870	Gravity	Wisconsin
Power Lake Dam Pend Oreille	High Hazard	—	1922	Rockfill	Washington
Pownal Tannery Bennington	Low Hazard	18 ft	1984	Gravity	Vermont
Prairie Du Sac Sauk	High Hazard	25 ft	1914	Gravity	Wisconsin
Prairie River Itasca	Low Hazard	35 ft	1920	Gravity	Minnesota
Prickett Baraga	High Hazard	54 ft	1931	Multi-Arch	Michigan
Priest Tuolumne	High Hazard	168 ft	1923	Earth	California
Priest Rapids Grant	High Hazard	90 ft	1961	Gravity	Washington
Prieto Dam Lares	High Hazard	98 ft	1955	Gravity	Puerto Rico
Proctor Rutland	Low Hazard	16 ft	1910	Stone	Vermont
Prospect Herkimer	High Hazard	52 ft	1959	Concrete	New York
Prospect Forebay Dam Jackson	Low Hazard	31 ft	1911	Earth	Oregon
Pumping Pond Dike Whatcom	Low Hazard	22 ft	1960	Earth	Washington
Putts Bridge Hampden	Low Hazard	22 ft	1918	Concrete	Massachusetts
Pyramid Los Angeles	High Hazard	400 ft	1974	Earth	California