High Hazard Dams

Loss of human life is likely if the dam fails.

Dam Name	Hazard	Height	Built	Type	State
Wanaksink Lake Dam Sullivan	High Hazard	22 ft	1852	Earth	New York
Wanapum Kittitas	High Hazard	93 ft	1965	Gravity	Washington
W and W Farms Dam Sumter	High Hazard	15 ft	1989	—	South Carolina
Waneka Boulder	High Hazard	27 ft	1865	Earth	Colorado
Wangaum Falls Wayne	High Hazard	30 ft	1925	Earth	Pennsylvania
Wannamakers Upper Dam Calhoun	High Hazard	31 ft	1970	—	South Carolina
Wanship Summit	High Hazard	—	1957	Earth	Utah
Wantastiquet Lake Windsor	High Hazard	22 ft	1880	Masonry	Vermont
Wapato Lake Dam Chelan	High Hazard	—	1912	Rockfill	Washington
Wappingers Falls Dutchess	High Hazard	20 ft	1872	Masonry	New York
Ward Creek Alameda	High Hazard	71 ft	1963	Earth	California
Ward Creek Delta	High Hazard	45 ft	1957	Earth	Colorado
Warden Lake Hardy	High Hazard	30 ft	1959	Rockfill	West Virginia
Ward Impoundment (Upper) Dam Kanawha	High Hazard	139 ft	1965	Earth	West Virginia
Ward Lake Delta	High Hazard	27 ft	1958	Earth	Colorado
Ward Lake Dam Polk	High Hazard	80 ft	1946	Gravity	Arkansas
Ware Lake Dam Jefferson	High Hazard	28 ft	1955	Earth	Missouri
Warm Springs Malheur	High Hazard	100 ft	1918	Concrete	Oregon
Warm Springs Dam Sonoma	High Hazard	319 ft	1983	Earth	California
Warm Springs No. 1 Morgan	High Hazard	39 ft	1957	Earth	West Virginia
Warm Springs No. 2 Morgan	High Hazard	36 ft	1956	Earth	West Virginia
Warm Springs No. 3 Morgan	High Hazard	48 ft	1955	Earth	West Virginia
Warm Springs No. 4 Morgan	High Hazard	41 ft	1961	Earth	West Virginia
Warm Springs No. 5 Morgan	High Hazard	37 ft	1956	Earth	West Virginia
Warm Springs No. 6 Morgan	High Hazard	28 ft	1958	Earth	West Virginia
Warm Springs No. 7 Morgan	High Hazard	36 ft	1958	Earth	West Virginia
Warm Springs No. 9 Morgan	High Hazard	32 ft	1956	Earth	West Virginia
Warner Draw Washington	High Hazard	—	1975	Earth	Utah
Warner Gap Hollow Dam Washington	High Hazard	65 ft	1902	Earth	Maryland
Warren Dam Gaston	High Hazard	—	—	Earth	North Carolina
Warren H. Brock Reservoir Dikes Imperial	High Hazard	14 ft	2010	Earth	California
Warren H Ohl Clinton	High Hazard	59 ft	1965	Earth	Pennsylvania
Warren Lake Larimer	High Hazard	23 ft	1882	Earth	Colorado
Warren Lake Washington	High Hazard	35 ft	1983	Earth	Vermont
Warren Lake Dam Cheshire	High Hazard	13 ft	1771	Earth	New Hampshire
Warren Mill Dam Hunterdon	High Hazard	38 ft	1916	Earth	New Jersey
Warren Pond Dam Tolland	High Hazard	22 ft	1852	Earth	Connecticut
Warrenton Dam Fauquier	High Hazard	31 ft	—	Buttress	Virginia
Warrenton Lake Tulsa	High Hazard	30 ft	1936	Earth	Oklahoma
Warrenton Lake Dam Fauquier	High Hazard	24 ft	—	Earth	Virginia
Warrington (Pa-611) Bucks	High Hazard	45 ft	1976	Earth	Pennsylvania
Warrior Lake Dam Moore	High Hazard	—	1965	Earth	North Carolina
Warsaw Biogas Lined Process Holding Pond Dam Duplin	High Hazard	—	—	Other	North Carolina
Warvid Lake Dam St. Charles	High Hazard	69 ft	1989	Earth	Missouri
Warwick Downs Dam St. Charles	High Hazard	42 ft	1969	Earth	Missouri
Warzyn Iowa	High Hazard	25 ft	1974	Earth	Wisconsin
Wasatch County Lake Creek Debris Basin Wasatch	High Hazard	—	1987	Earth	Utah
Wasco Wasco	High Hazard	45 ft	1958	Earth	Oregon
Wasel Reservoir Dam Hartford	High Hazard	80 ft	1966	Earth	Connecticut
Washakie Fremont	High Hazard	43 ft	1935	Earth	Wyoming