High Hazard Dams

Loss of human life is likely if the dam fails.

Dam Name	Hazard	Height	Built	Type	State
Abeniki Lake Dam Coos	High Hazard	40 ft	1900	Earth	New Hampshire
Aberdeen Lake Dam Grays Harbor	High Hazard	—	1928	Earth	Washington
Aberdeen Town Lake Dam Moore	High Hazard	—	1945	Earth	North Carolina
Abert Water Plant - Sludge Lagoon Dam Bedford	High Hazard	55 ft	—	Earth	Virginia
Abiaca Watershed Structure Y-34-03 Dam Carroll	High Hazard	33 ft	1965	Earth	Mississippi
Abiaca Watershed Structure Y-34-04 Dam Carroll	High Hazard	41 ft	1968	Earth	Mississippi
Abiaca Watershed Structure Y-34-05 Dam Carroll	High Hazard	40 ft	1965	Earth	Mississippi
Abiaca Watershed Structure Y-34-06 Dam Carroll	High Hazard	41 ft	1967	Earth	Mississippi
Abiaca Watershed Structure Y-34-07 Dam Carroll	High Hazard	39 ft	1966	Earth	Mississippi
Abiaca Watershed Structure Y-34-10 Dam Carroll	High Hazard	41 ft	1967	Earth	Mississippi
Abiaca Watershed Structure Y-34-25 Dam Carroll	High Hazard	30 ft	1971	Earth	Mississippi
Abiquiu Dam Rio Arriba	High Hazard	340 ft	1963	Earth	New Mexico
Abner Fork Dam Harlan	High Hazard	700 ft	—	Earth	Kentucky
Abotlapoota Creek WS Str Y-34-11 Dam Carroll	High Hazard	44 ft	1965	Earth	Mississippi
Abotlapoota Watershed Structure Y-34-13 Dam Carroll	High Hazard	26 ft	1965	Earth	Mississippi
Absher Lake Dam White	High Hazard	15 ft	1968	Earth	Illinois
Acacia Woods Lake Dam Rankin	High Hazard	35 ft	2001	Earth	Mississippi
Acadia Power Partners Holding Pond Acadia	High Hazard	20 ft	2004	Earth	Louisiana
Ackley Lake Dam Judith Basin	High Hazard	55 ft	1938	Earth	Montana
Acme (Pa-657) Westmoreland	High Hazard	33 ft	1975	Earth	Pennsylvania
Acme Pond Dam Windham	High Hazard	16 ft	1846	Earth	Connecticut
Acomita Cibola	High Hazard	—	1938	Earth	New Mexico
Acorn Dickson	High Hazard	—	1939	Earth	Tennessee
Acorn Ridge Ramsey	High Hazard	37 ft	2012	—	North Dakota
Acre Pond Susquehanna	High Hazard	12 ft	1825	Earth	Pennsylvania
Acton Lake Dam Butler	High Hazard	62 ft	1956	Earth	Ohio
Acuff & Ayers Lake Dam Bollinger	High Hazard	30 ft	1968	Earth	Missouri
Ada Dam Mercer	High Hazard	62 ft	1924	Earth	West Virginia
Adams Davis	High Hazard	—	1915	Earth	Utah
Adams Dairy Parkway Dam Jackson	High Hazard	48 ft	1992	Earth	Missouri
Adams Fork Slurry Dam Leslie	High Hazard	480 ft	—	Earth	Kentucky
Adams Lake Blount	High Hazard	—	1970	Earth	Alabama
Adams Lake Dam Guilford	High Hazard	—	1955	Earth	North Carolina
Adams Lake Dam Adams	High Hazard	35 ft	1947	Earth	Ohio
Adams Millpond Dam Kershaw	High Hazard	13 ft	1890	—	South Carolina
Adams Park Dam Douglas	High Hazard	13 ft	2016	Earth	Nebraska
Adams Pond Dam York	High Hazard	26 ft	1946	—	South Carolina
Adamsville Hydroelectric Dam Cass	High Hazard	11 ft	1865	Earth	Michigan
Adder Reservoir Middlesex	High Hazard	28 ft	1934	Earth	Connecticut
Addicks Dam Harris	High Hazard	49 ft	1948	Gravity	Texas
Addison Mill Pond Dam Lenawee	High Hazard	25 ft	1837	Earth	Michigan
Adds Lake Dam Hunt	High Hazard	15 ft	2018	—	Texas
Adelaide Big Horn	High Hazard	74 ft	1990	Earth	Wyoming
Adjuntas Dam Adjuntas	High Hazard	80 ft	1950	Gravity	Puerto Rico
Adkison Lake Dam Platte	High Hazard	20 ft	1954	Earth	Missouri
Adobe Maricopa	High Hazard	65 ft	1982	Earth	Arizona
Adobe Creek Bent	High Hazard	32 ft	1904	Earth	Colorado
Adobe Creek Lake	High Hazard	36 ft	1962	Earth	California
Adobe Wash Regulating Reservoir Emery	High Hazard	—	2012	Earth	Utah
Adrian Resevoir Dam Bates	High Hazard	27 ft	1963	Other	Missouri