High Hazard Dams

Loss of human life is likely if the dam fails.

Dam Name	Hazard	Height	Built	Type	State
Bloomfield Dam No. 1 San Juan	High Hazard	45 ft	1957	Earth	New Mexico
Bloomfield Flood Control Site #3 Dam Hartford	High Hazard	29 ft	1962	Earth	Connecticut
Bloss Branch Slurry Dam Clay	High Hazard	535 ft	—	Earth	Kentucky
Blossom City Lake Dam Lamar	High Hazard	15 ft	1937	Earth	Texas
Blossom Valley Reservoir San Diego	High Hazard	42 ft	1962	Earth	California
Blott Waukesha	High Hazard	12 ft	1837	Gravity	Wisconsin
Blowing Rock Country Club Dam Watauga	High Hazard	—	1990	Earth	North Carolina
Blowing Rock Country Club Middle Dam Watauga	High Hazard	—	—	Other	North Carolina
Blowing Rock Country Club Upper Dam Watauga	High Hazard	—	—	Earth	North Carolina
Blue Canyon Apache	High Hazard	—	1984	Earth	Arizona
Bluecat Lake Maury	High Hazard	—	1979	Earth	Tennessee
Blue Creek Box Elder	High Hazard	—	1904	Earth	Utah
Blue Creek Reservoir Dam White	High Hazard	65 ft	—	Earth	Georgia
Blue Dam Surry	High Hazard	—	—	Earth	North Carolina
Blue Diamond Business Center Detention Basin Dam #1 Clark	High Hazard	18 ft	2019	Earth	Nevada
Blue Diamond Upper Detention Dam Clark	High Hazard	61 ft	2000	Earth	Nevada
Blue Eye Creek W/S Dam Site 1 Talladega	High Hazard	51 ft	1969	Earth	Alabama
Blue Eye Creek W/S Dam Site 2 Talladega	High Hazard	40 ft	1968	Earth	Alabama
Blue Farm Dam Moore	High Hazard	—	—	Earth	North Carolina
Bluefield Dam Boone	High Hazard	25 ft	—	Earth	Kentucky
Blue Heron Dam Washington	High Hazard	51 ft	1969	Earth	Missouri
Blue Heron Lake No. 1 Dam Medina	High Hazard	28 ft	—	Earth	Ohio
Blue Heron Lake No. 5 Dam Medina	High Hazard	19 ft	—	Earth	Ohio
Blue Hills Flood Control Site #2 Dam Hartford	High Hazard	25 ft	1964	Earth	Connecticut
Blue Hills Flood Control Site #2 Dike Hartford	High Hazard	8 ft	—	Earth	Connecticut
Blue Hills Reservoir Dam Norfolk	High Hazard	36 ft	1950	Earth	Massachusetts
Bluejay Lake Dam Raleigh	High Hazard	14 ft	—	Earth	West Virginia
Blue Lake Nevada	High Hazard	21 ft	1856	Earth	California
Blue Lake City and Borough of Sitka	High Hazard	294 ft	1961	Arch	Alaska
Blue Lake Dam Anderson	High Hazard	20 ft	—	Earth	Texas
Blue Marsh Dam Berks	High Hazard	—	1977	Rockfill	Pennsylvania
Blue Marsh Dam - Bernville Levee Berks	High Hazard	30 ft	1977	Earth	Pennsylvania
Blue Marsh Dam - Dikes A and B Berks	High Hazard	25 ft	1977	—	Pennsylvania
Blue Mesa Gunnison	High Hazard	390 ft	1965	Earth	Colorado
Blue Mountain Dam Yell	High Hazard	115 ft	1947	Earth	Arkansas
Blue Mountain Lake Monroe	High Hazard	9 ft	1908	Earth	Pennsylvania
Blue Ridge Communtiy College Dam Henderson	High Hazard	—	—	Earth	North Carolina
Blue Ridge Dam Fannin	High Hazard	175 ft	1930	Earth	Georgia
Blue Ridge Estates Dam Botetourt	High Hazard	33 ft	—	Earth	Virginia
Blue Ridge Hills Dam Transylvania	High Hazard	—	1974	Earth	North Carolina
Blue River Dam Lane	High Hazard	270 ft	1968	Earth	Oregon
Blue River Dam Bryan	High Hazard	40 ft	1979	Earth	Oklahoma
Blue Rock Lake Dam Muskingum	High Hazard	31 ft	1937	Earth	Ohio
Blues Pond Dam Phelps	High Hazard	23 ft	1968	Earth	Missouri
Blue Spring Lake Jefferson	High Hazard	15 ft	1928	Gravity	Wisconsin
Blue Springs Dam Jackson	High Hazard	70 ft	1988	Rockfill	Missouri
Blue Springs Lake A Dam DeSoto	High Hazard	38 ft	1995	Earth	Mississippi
Blue Springs Recreation Lake Dam Taylor	High Hazard	18 ft	1967	Earth	Florida
Blue Star Dam Lower Henderson	High Hazard	—	1963	Earth	North Carolina
Blue Star Dam Upper Henderson	High Hazard	—	—	Earth	North Carolina