High Hazard Dams

Loss of human life is likely if the dam fails.

Dam Name	Hazard	Height	Built	Type	State
Artesian Lake Dam Washington	High Hazard	26 ft	1962	Earth	Missouri
Artesian Lake Dam Ashland	High Hazard	18 ft	—	Earth	Ohio
Arthur R. Bowman Crook	High Hazard	245 ft	1960	Earth	Oregon
Arthurs Pond Dam Orange	High Hazard	27 ft	1920	Masonry	New York
Arthur V. Watkins Box Elder	High Hazard	—	1964	Earth	Utah
Art Museum Dam Wake	High Hazard	—	—	Earth	North Carolina
Arturo East Pit Stormwater Pond Dam Elko	High Hazard	60 ft	2016	Rockfill	Nevada
Arundell Barranca Ventura	High Hazard	57 ft	1996	Earth	California
Asaayi McKinley	High Hazard	—	1964	Earth	New Mexico
Asamera Cannon Mine Tailings Dam Chelan	High Hazard	—	1986	Earth	Washington
Asamera Effluent Storage Dam Storey	High Hazard	32 ft	2001	Earth	Nevada
Asa Pond Washington	High Hazard	10 ft	—	Earth	Rhode Island
Asarco Lake Dam Iron	High Hazard	50 ft	1971	Earth	Missouri
Asb Pond Dam Isle of Wight	High Hazard	17 ft	—	Earth	Virginia
Asbury Russell	High Hazard	—	1950	Earth	Alabama
Asbury Hills Dam Greenville	High Hazard	30 ft	1960	—	South Carolina
Ascalmore Structure Y-17a-01 Dam Tallahatchie	High Hazard	36 ft	1963	Earth	Mississippi
Ascalmore Structure Y-17a-02 Dam Tallahatchie	High Hazard	39 ft	1959	Earth	Mississippi
Ash Basin No 1 Snyder	High Hazard	22 ft	1949	Earth	Pennsylvania
Ash Basin No 2 Snyder	High Hazard	136 ft	1955	Earth	Pennsylvania
Ash Basin No 3 Snyder	High Hazard	117 ft	1971	Earth	Pennsylvania
Ashburn Village Lake #1 Loudoun	High Hazard	32 ft	—	Earth	Virginia
Ashburn Village Lake #2 Loudoun	High Hazard	29 ft	—	Earth	Virginia
Ashbury Lake Dam Ralls	High Hazard	28 ft	1978	Earth	Missouri
Ash Creek Washington	High Hazard	—	1960	Rockfill	Utah
Ashcroft Drive - Woodbridge Pond Prince George's	High Hazard	20 ft	—	Earth	Maryland
Asheboro Country Club Lake Dam Randolph	High Hazard	—	1947	Earth	North Carolina
Ashe Lake Dam Ashe	High Hazard	—	1955	Earth	North Carolina
Asheville 1964 Ash Basin Dam Buncombe	High Hazard	—	1964	Earth	North Carolina
Asheville North Stormwater Pond Dam Buncombe	High Hazard	—	—	Earth	North Carolina
Asheville South Stormwater Pond Dam Buncombe	High Hazard	—	—	Earth	North Carolina
Ashfield Pond Dam Franklin	High Hazard	15 ft	1897	Earth	Massachusetts
Ash Hollow Dry Dam Lancaster	High Hazard	33 ft	2017	Earth	Nebraska
Ashland Pond Dam New London	High Hazard	25 ft	1800	Earth	Connecticut
Ashland Reservoir Schuylkill	High Hazard	80 ft	1926	Earth	Pennsylvania
Ashland Reservoir Dam Middlesex	High Hazard	59 ft	1900	Concrete	Massachusetts
Ashley Branch Dam Washington	High Hazard	58 ft	1986	Earth	Missouri
Ashley Lake Reservoir Berkshire	High Hazard	22 ft	1902	Masonry	Massachusetts
Ashmere Lake Dam Berkshire	High Hazard	34 ft	1875	Earth	Massachusetts
Ashmore Lake Dam Lee	High Hazard	—	—	Earth	North Carolina
Ashokan Dam Ulster	High Hazard	213 ft	1916	Earth	New York
Ash Pond E Dam Putnam	High Hazard	73 ft	1981	Earth	Georgia
Ashtabula County Outdoor Club Lake Dam Ashtabula	High Hazard	22 ft	1928	Earth	Ohio
Ashton Fremont	High Hazard	65 ft	1917	Earth	Idaho
Ashton Raleigh Residential Dam #1 Wake	High Hazard	—	—	Other	North Carolina
Ashton Raleigh Residential Dam #2 Wake	High Hazard	—	—	Other	North Carolina
Ashton South Washington	High Hazard	19 ft	—	Earth	Pennsylvania
Ashuelot Pond Dam Sullivan	High Hazard	13 ft	1872	Concrete	New Hampshire
Askon Hollow Fayette	High Hazard	28 ft	1963	Earth	Pennsylvania
Aspenhoff Lake Dam Warren	High Hazard	29 ft	1965	Earth	Missouri