Water Supply Dams

7,228 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Arjay Slurry Impoundment Bell	High Hazard	355 ft	—	Earth	Kentucky
Ar Kuykendall Lake Dam McMullen	Low Hazard	14 ft	1968	Earth	Texas
Arlington Mill Res Evergreen Dike Rockingham	Significant Hazard	31 ft	1922	Earth	New Hampshire
Arlington Mills Res West Dike Rockingham	Low Hazard	10 ft	1922	Earth	New Hampshire
Arlington Mills Res Wheeler Dam Rockingham	High Hazard	54 ft	1922	Concrete	New Hampshire
Armstrong Reservoir Dam Howard	Low Hazard	30 ft	1960	Earth	Missouri
Arnold Dam Walton	Low Hazard	24 ft	1954	Earth	Georgia
Arnold Dam Berkshire	Significant Hazard	21 ft	1954	Masonry	Massachusetts
Arnoname 136 Garland	Significant Hazard	—	1962	Earth	Arkansas
Arnoname 138 Garland	Low Hazard	—	1964	Earth	Arkansas
Arnoname 140 Garland	Low Hazard	—	1964	Earth	Arkansas
Arnoname 27 Hot Spring	Significant Hazard	—	1953	Earth	Arkansas
Arnoname 55 Union	High Hazard	10 ft	1924	Earth	Arkansas
Arnoname 56 Union	Low Hazard	13 ft	1918	Earth	Arkansas
Arnoname 68 A.F.C. Nevada	Low Hazard	14 ft	1956	Earth	Arkansas
Arrowhead Ranch Lake Dam Red River	Low Hazard	38 ft	1964	Earth	Texas
Arrowood Lake Dam Gaston	High Hazard	—	1955	Earth	North Carolina
Arrowrock Boise	High Hazard	350 ft	1915	Concrete	Idaho
Arroyo Seco Amador	High Hazard	67 ft	1957	Earth	California
Arthurs Pond Dam Orange	High Hazard	27 ft	1920	Masonry	New York
Arwpf Lagoon No. 4 Arapahoe	Low Hazard	25 ft	2009	Earth	Colorado
Asarco Lake Dam Iron	High Hazard	50 ft	1971	Earth	Missouri
Ashby Reservoir Dam Middlesex	Significant Hazard	28 ft	1918	Concrete	Massachusetts
Ash Creek Tank Dam King	Low Hazard	25 ft	1945	Earth	Texas
Ashland Reservoir Schuylkill	High Hazard	80 ft	1926	Earth	Pennsylvania
Ashley Lake Reservoir Berkshire	High Hazard	22 ft	1902	Masonry	Massachusetts
Ashley Pond Dam Hampden	Significant Hazard	11 ft	1897	Earth	Massachusetts
Ashokan Dam Ulster	High Hazard	213 ft	1916	Earth	New York
Ashton Fremont	High Hazard	65 ft	1917	Earth	Idaho
Askon Hollow Fayette	High Hazard	28 ft	1963	Earth	Pennsylvania
Asnebumskit Pond Dam Worcester	Low Hazard	11 ft	1950	Earth	Massachusetts
Aspetuck Reservoir Dam Fairfield	Significant Hazard	11 ft	1913	Earth	Connecticut
Assabet River Dam Worcester	Significant Hazard	11 ft	—	Concrete	Massachusetts
Assawompset Pond Dam Plymouth	Low Hazard	8 ft	1894	Gravity	Massachusetts
Assunpink #8 Dam Mercer	High Hazard	20 ft	—	Earth	New Jersey
Asti Sonoma	Low Hazard	34 ft	1955	Earth	California
Asu-Norris Branch Dam Watauga	High Hazard	—	1974	Earth	North Carolina
Asylum Reservoir #1 Dam Middlesex	Significant Hazard	5 ft	—	Earth	Connecticut
Asylum Reservoir #2 Dam Middlesex	Significant Hazard	35 ft	—	Earth	Connecticut
Asylum Reservoir #4 Dam Middlesex	Significant Hazard	30 ft	—	Earth	Connecticut
Asylum Reservoir #5 Dam Middlesex	Significant Hazard	15 ft	1879	Earth	Connecticut
Asylum Reservoir Dam #6 Middlesex	Significant Hazard	28 ft	1954	Earth	Connecticut
Atascadero Park San Luis Obispo	High Hazard	18 ft	1918	Earth	California
Athens Water Supply Dam Greene	Significant Hazard	8 ft	1925	Earth	New York
Atkins Reservoir Dam Franklin	High Hazard	33 ft	1930	Earth	Massachusetts
Atkins Reservoir Dike Franklin	Low Hazard	11 ft	1932	Gravity	Massachusetts
Atkisson Lake Dam Camden	Low Hazard	25 ft	—	Earth	Missouri
Atkisson Reservoir Harford	High Hazard	56 ft	1942	Concrete	Maryland
Atlanta-Fulton Reservoir #1 Dam Fulton	High Hazard	72 ft	1960	Earth	Georgia
Atlanta-Fulton Reservoir #2 Dam Fulton	High Hazard	70 ft	2006	Earth	Georgia