High Hazard Dams

Loss of human life is likely if the dam fails.

Dam Name	Hazard	Height	Built	Type	State
Anthony Arroyo Dam No. 1 Doña Ana	High Hazard	35 ft	1974	Earth	New Mexico
Anthony House Nevada	High Hazard	75 ft	1970	Earth	California
Anthony Lake Dam 1 Greenville	High Hazard	26 ft	1972	—	South Carolina
Antietam Adams	High Hazard	70 ft	1953	Earth	Pennsylvania
Antilon Lake Dam Chelan	High Hazard	—	1913	Earth	Washington
Antioch Church Road Dam Union	High Hazard	—	1993	Earth	North Carolina
Antioch Reservoir Contra Costa	High Hazard	30 ft	1935	Earth	California
Anzalduas Diversion Dam Hidalgo	High Hazard	23 ft	1960	Concrete	Texas
A & O Farm Pond Wood	High Hazard	35 ft	1971	Earth	West Virginia
A O Shearrer Lake Dam Wayne	High Hazard	28 ft	1968	Earth	Missouri
Apache Brazito Mesquite Dam No. 1 Doña Ana	High Hazard	33 ft	1964	Earth	New Mexico
Apache Brazito Mesquite Dam No. 2 Doña Ana	High Hazard	55 ft	1965	Earth	New Mexico
Apache Brazito Mesquite Dam No. 3 Doña Ana	High Hazard	44 ft	1964	Earth	New Mexico
Apache Brazito Mesquite Dam No. 4 Doña Ana	High Hazard	33 ft	1964	Earth	New Mexico
Apache Junction FRS Pinal	High Hazard	22 ft	1988	Earth	Arizona
Apache Lake Dam Travis	High Hazard	38 ft	1969	Earth	Texas
Apache Springs Dam Kerr	High Hazard	25 ft	1941	Earth	Texas
Apache Station Ash/Scrubber Wdf Cochise	High Hazard	30 ft	1995	Earth	Arizona
Apalache Millpond Dam Spartanburg	High Hazard	45 ft	1904	—	South Carolina
Apalachia Dam Cherokee	High Hazard	150 ft	1943	Concrete	North Carolina
Apex Lake Dam Wake	High Hazard	—	1968	Earth	North Carolina
Apishapa Las Animas	High Hazard	41 ft	1892	Earth	Colorado
Appalachee Pond Lincoln	High Hazard	16 ft	1922	Earth	Maine
Appalachian Ski Mountain Lake Dam Watauga	High Hazard	—	1981	Earth	North Carolina
Ap Parker Dam Liberty	High Hazard	18 ft	1953	Earth	Texas
Apple Canyon Lake Dam Jo Daviess	High Hazard	78 ft	1978	Rockfill	Illinois
Apple Creek Dam DeSoto	High Hazard	15 ft	1987	Earth	Mississippi
Apple Creek North Dam DeSoto	High Hazard	13 ft	2000	Earth	Mississippi
Applegate Dam Jackson	High Hazard	242 ft	1980	Rockfill	Oregon
Apple River St. Croix	High Hazard	47 ft	1954	Masonry	Wisconsin
Apples Crossing Pond 1 Dam Collin	High Hazard	23 ft	2019	—	Texas
Appleton City Lake Dam Bates	High Hazard	30 ft	1936	Earth	Missouri
Apple Valley Lake Dam Knox	High Hazard	91 ft	1971	Earth	Ohio
Aquia Creek Dam Stafford	High Hazard	81 ft	—	Earth	Virginia
Aquilla Dam Hill	High Hazard	104 ft	1983	Earth	Texas
Aquilla Hackberry Ck WS SCS Site 21a Dam Hill	High Hazard	34 ft	1982	Earth	Texas
Aquilla Hackberry Ck WS SCS Site 23a Dam Hill	High Hazard	48 ft	1988	Earth	Texas
Aquilla Hackberry Ck WS SCS Site 2 Dam Hill	High Hazard	28 ft	1978	Earth	Texas
Aragona Village Prince George's	High Hazard	21 ft	1991	Earth	Maryland
Arappco Dam Guilford	High Hazard	—	—	Earth	North Carolina
Araujo Reservoir No. 1 Napa	High Hazard	39 ft	1950	Earth	California
Araujo Reservoir No. 2 Napa	High Hazard	33 ft	1950	Earth	California
Arboretum Stormwater Detention Pond Dam Travis	High Hazard	30 ft	1985	Concrete	Texas
Arboretum Townhouse Dam Forsyth	High Hazard	—	2001	Earth	North Carolina
Arbor Valley Lake Dam Clarke	High Hazard	58 ft	2008	Earth	Iowa
Arbuckle Murray	High Hazard	150 ft	1965	Earth	Oklahoma
Arbuckle Dike 1 Murray	High Hazard	25 ft	1966	Gravity	Oklahoma
Arbuckle Dike 2 Murray	High Hazard	15 ft	1966	Gravity	Oklahoma
Arbuckle Reservoir Dam Wharton	High Hazard	41 ft	2018	—	Texas
Arcadia Shelby	High Hazard	—	1965	Earth	Tennessee