High Hazard Dams

Loss of human life is likely if the dam fails.

Dam Name	Hazard	Height	Built	Type	State
Big Creek Wid Site 11 Craighead	High Hazard	18 ft	1966	Earth	Arkansas
Big Creek Wid Site 13 Craighead	High Hazard	25 ft	1969	Earth	Arkansas
Big Creek Wid Site 14 Craighead	High Hazard	26 ft	1969	Earth	Arkansas
Big Creek Wid Site 16 Craighead	High Hazard	25 ft	1965	Earth	Arkansas
Big Creek Wid Site 19 Craighead	High Hazard	31 ft	1966	Earth	Arkansas
Big Creek Wid Site 20 Craighead	High Hazard	20 ft	1965	Earth	Arkansas
Big Creek Wid Site 21 Craighead	High Hazard	34 ft	1965	Earth	Arkansas
Big Creek Wid Site 22 Craighead	High Hazard	25 ft	1965	Earth	Arkansas
Big Dalton Los Angeles	High Hazard	153 ft	1929	Multi-Arch	California
Big Dalton Debris Basin Los Angeles	High Hazard	59 ft	1960	Earth	California
Big Dry Creek Fresno	High Hazard	50 ft	1948	Earth	California
Big East Utah	High Hazard	—	1898	Earth	Utah
Big Falls Rusk	High Hazard	50 ft	1923	Gravity	Wisconsin
Bigfork Diversion Dam Flathead	High Hazard	22 ft	1910	Gravity	Montana
Big Four Mine Dam Washington	High Hazard	73 ft	1978	Other	Missouri
Big Goose Park (3rd Enl.) Sheridan	High Hazard	95 ft	1958	Earth	Wyoming
Big Groundhog Slurry Impoundment Pike	High Hazard	412 ft	—	Earth	Kentucky
Biggs Lower Lake Dam Webster	High Hazard	25 ft	1950	Earth	Missouri
Big Hill Dam Labette	High Hazard	83 ft	1981	Earth	Kansas
Big Hollow Slurry Impoundment Martin	High Hazard	356 ft	—	Earth	Kentucky
Big Horn Dike A Johnson	High Hazard	45 ft	1964	Earth	Wyoming
Big Horn Dike B Johnson	High Hazard	50 ft	1964	Earth	Wyoming
Big Horn Dike C Johnson	High Hazard	50 ft	1964	Earth	Wyoming
Big Indian Creek 14-B Gage	High Hazard	42 ft	1974	Earth	Nebraska
Big Lake Dam Calhoun	High Hazard	25 ft	1955	Earth	Mississippi
Big Lake Dam Crawford	High Hazard	34 ft	1968	Earth	Missouri
Big Lick Branch Cr Dam	High Hazard	—	—	Other	West Virginia
Big Meadows - Main Dam Mineral	High Hazard	61 ft	1968	Earth	Colorado
Big Meadows - North Dike Mineral	High Hazard	15 ft	1968	Earth	Colorado
Big Muddy Lake Scotland	High Hazard	20 ft	1937	Earth	North Carolina
Big Oak Maury	High Hazard	—	1985	Earth	Tennessee
Big Pine Creek Inyo	High Hazard	14 ft	—	Rockfill	California
Big Pond Dam Windham	High Hazard	20 ft	1870	Earth	Connecticut
Big Quinnesec Falls Marinette	High Hazard	82 ft	1948	Gravity	Wisconsin
Big Quinnesec Falls Marinette	High Hazard	77 ft	1949	Concrete	Michigan
Big Rock Lake Dam Pickens	High Hazard	30 ft	1955	—	South Carolina
Big Rock Ranch Marin	High Hazard	45 ft	2002	Earth	California
Big Sage Modoc	High Hazard	49 ft	1921	Earth	California
Big Sand Wash Dam Duchesne	High Hazard	—	1968	Earth	Utah
Big Sand Wash East Duchesne	High Hazard	—	2006	Earth	Utah
Big Sand Wash West Duchesne	High Hazard	—	2006	Earth	Utah
Big Sand Watershed Structure Y-32-02 Dam Carroll	High Hazard	33 ft	1965	Earth	Mississippi
Big Sand Watershed Structure Y-32-07 Dam Carroll	High Hazard	33 ft	1965	Earth	Mississippi
Big Sand Watershed Structure Y-32-09a Dam Carroll	High Hazard	37 ft	1966	Earth	Mississippi
Big Sand Watershed Structure Y-32-09b Dam Carroll	High Hazard	38 ft	1965	Earth	Mississippi
Big Sand Watershed Structure Y-32-10 Dam Carroll	High Hazard	47 ft	1967	Earth	Mississippi
Big Sand Watershed Structure Y-32-11 Dam Carroll	High Hazard	44 ft	1966	Earth	Mississippi
Big Sand Watershed Structure Y-32-12 Dam Carroll	High Hazard	44 ft	1964	Earth	Mississippi
Big Sand Watershed Structure Y-32-17 Dam Carroll	High Hazard	42 ft	1966	Earth	Mississippi
Big Sandy Sweetwater	High Hazard	85 ft	1951	Earth	Wyoming