High Hazard Dams

Loss of human life is likely if the dam fails.

Dam Name	Hazard	Height	Built	Type	State
Avalon Eddy	High Hazard	58 ft	1906	Earth	New Mexico
Avery Flood Control Site #1 Dam Hartford	High Hazard	20 ft	1992	Earth	Connecticut
Avery Flood Control Site #2 Dam Hartford	High Hazard	23 ft	1993	Earth	Connecticut
Avon Town Hall Lake Dam Hendricks	High Hazard	18 ft	1965	Earth	Indiana
A W Bailey Dam Aiken	High Hazard	12 ft	1945	—	South Carolina
Axell Sonoma	High Hazard	43 ft	1952	Earth	California
Aydelette Lake Dam Guilford	High Hazard	—	1933	Earth	North Carolina
Ayers Pond Dam Yancey	High Hazard	—	—	Earth	North Carolina
Ayers Upper Dam Yancey	High Hazard	—	—	Other	North Carolina
Aylesworth Creek Dam Lackawanna	High Hazard	90 ft	1970	Rockfill	Pennsylvania
Aylett Mill Dam King William	High Hazard	20 ft	—	Earth	Virginia
Azalea Sonoma	High Hazard	44 ft	1955	Earth	California
Azdell Lake Dam Audrain	High Hazard	20 ft	—	Earth	Missouri
Aziscohos Oxford	High Hazard	74 ft	1911	Buttress	Maine
Babbidge Reservoir Dam Cheshire	High Hazard	38 ft	1931	Earth	New Hampshire
Babson Reservoir Dam Essex	High Hazard	44 ft	1930	Earth	Massachusetts
Baby Gap Ranch Reservoir Benton	High Hazard	—	2015	Earth	Washington
Bachman Lake Dam Dallas	High Hazard	35 ft	1901	Earth	Texas
Back Creek Reservoir Dam Alamance	High Hazard	—	1991	Earth	North Carolina
Back-Up Water Supply Woodson	High Hazard	36 ft	1936	Earth	Kansas
Bacon Creek Watershed Site A-1-1 Woodbury	High Hazard	36 ft	1978	Earth	Iowa
Bacon Creek Watershed Site A-2-4 Woodbury	High Hazard	51 ft	1979	Earth	Iowa
Bacon Creek Watershed Site A-3 Woodbury	High Hazard	69 ft	1978	Earth	Iowa
Bacon Creek Watershed Site A-3-1 Woodbury	High Hazard	50 ft	1978	Earth	Iowa
Bacon Creek Watershed Site C-1 Woodbury	High Hazard	41 ft	1976	Earth	Iowa
Bad Axe 11 Vernon	High Hazard	26 ft	1978	Gravity	Wisconsin
Bad Creek Main Dam Oconee	High Hazard	360 ft	1991	Earth	South Carolina
Badger Mountain Irr Dist Reservoir Expan Benton	High Hazard	—	1977	Earth	Washington
Badwater Creek Dam Natrona	High Hazard	—	—	Gravity	Wyoming
Bagley Whatcom	High Hazard	—	1927	Concrete	Washington
Bagnell Miller	High Hazard	148 ft	1931	Gravity	Missouri
Bahala Creek WS Str 2 Dam Lincoln	High Hazard	31 ft	1976	Earth	Mississippi
Baha Trail Lake Dam Washington	High Hazard	30 ft	1976	Earth	Missouri
Baiers Den Lake Dam Cass	High Hazard	28 ft	1956	Rockfill	Missouri
Bailey Dam Wake	High Hazard	—	—	Earth	North Carolina
Bailey Dam Laurens	High Hazard	29 ft	—	—	South Carolina
Bailey Debris Basin Los Angeles	High Hazard	43 ft	1954	Earth	California
Bailey Lake Dam Durham	High Hazard	—	1963	Earth	North Carolina
Bailey Lake Dam Morgan	High Hazard	23 ft	1973	—	Indiana
Bailey Mine Area No. 3 Saddle A Greene	High Hazard	67 ft	2014	Earth	Pennsylvania
Bailey Mine Area No. 3 Saddle B Greene	High Hazard	27 ft	2014	Earth	Pennsylvania
Bailey Mine Area No. 3 Saddle C Greene	High Hazard	37 ft	2014	Earth	Pennsylvania
Bailey Mine Area No. 3 Saddle D Greene	High Hazard	32 ft	2014	Earth	Pennsylvania
Bailey Mine Area No. 3 Slurry Greene	High Hazard	337 ft	2014	Earth	Pennsylvania
Bailey Mine Area No. 6 Sed Pond Greene	High Hazard	58 ft	—	Earth	Pennsylvania
Bailey Mine Fresh Water Imp Greene	High Hazard	164 ft	1984	Earth	Pennsylvania
Bailey Mine Slurry Impoundment Greene	High Hazard	315 ft	1984	Earth	Pennsylvania
Bailey No. 5 Sedimentation Pond Greene	High Hazard	60 ft	—	Earth	Pennsylvania
Bailey No 5 West Saddle Greene	High Hazard	68 ft	—	Earth	Pennsylvania
Bailey No. 8 Sediment Pond Greene	High Hazard	53 ft	—	Earth	Pennsylvania