High Hazard Dams
Loss of human life is likely if the dam fails.
| Dam Name | Hazard | Height | Built | Type | State |
|---|---|---|---|---|---|
| Watson Lake Dam #2 Moore | High Hazard | — | — | Earth | North Carolina |
| Watson Mill Pond Dam Oglethorpe | High Hazard | 16 ft | — | Earth | Georgia |
| Watson Road Lake Dam Forsyth | High Hazard | 28 ft | — | Earth | Georgia |
| Watts Bar Dam Meigs | High Hazard | 118 ft | 1942 | Concrete | Tennessee |
| Waurika Dam Jefferson | High Hazard | 106 ft | 1977 | Earth | Oklahoma |
| Wauseon Upground Reservoir No. 2 Fulton | High Hazard | 26 ft | 1934 | Earth | Ohio |
| Waverly Lower Reservoir Dam Tioga | High Hazard | 54 ft | 1880 | Earth | New York |
| Wawayanda Lake Dam Sussex | High Hazard | 14 ft | — | Earth | New Jersey |
| Waxahachie Country Club Lake Dam Ellis | High Hazard | 37 ft | 1923 | Earth | Texas |
| Waxhoma Lake Osage | High Hazard | 50 ft | 1955 | Earth | Oklahoma |
| Way Iron | High Hazard | 47 ft | 1941 | Concrete | Michigan |
| Waybridge At Weddington Dam Union | High Hazard | — | 1970 | Earth | North Carolina |
| Wayne County Wildlife Pond Dam Wayne | High Hazard | — | 1963 | Earth | North Carolina |
| Wayne Glen Chester | High Hazard | 14 ft | — | Earth | Pennsylvania |
| Wayne King Dam Edgefield | High Hazard | 19 ft | 1988 | — | South Carolina |
| Waynesville Water Supply Dam Haywood | High Hazard | — | 1982 | Earth | North Carolina |
| W B Manuel Dam Allendale | High Hazard | 15 ft | — | — | South Carolina |
| Weare Reservoir Dam Hillsborough | High Hazard | 34 ft | 1913 | Earth | New Hampshire |
| Weatherby Lake Dam Platte | High Hazard | 84 ft | 1936 | Earth | Missouri |
| Weatherfordbear #2 Wayne | High Hazard | — | 1969 | Earth | Tennessee |
| Weatherman Dam Avery | High Hazard | — | — | Earth | North Carolina |
| Weathershield Taylor | High Hazard | 13 ft | 1977 | Earth | Wisconsin |
| Weatherspoon 1979 Ash Basin Dam Robeson | High Hazard | — | 1949 | Earth | North Carolina |
| Weatherspoon Cooling Lake Dam Robeson | High Hazard | — | 1955 | Earth | North Carolina |
| Weaver Lake Westmoreland | High Hazard | 25 ft | 1961 | Earth | Pennsylvania |
| Webb Chapel Obion | High Hazard | — | 1989 | Earth | Tennessee |
| Webber Ionia | High Hazard | 30 ft | 1907 | Gravity | Michigan |
| Weber El Dorado | High Hazard | 92 ft | 1924 | Multi-Arch | California |
| Weber Mineral | High Hazard | 40 ft | 1935 | Earth | Nevada |
| Weber Basin Equalizing Reservoir 17.2 Davis | High Hazard | — | 1960 | Earth | Utah |
| Weber Basin Equalizing Reservoir 17.8 Davis | High Hazard | — | 1960 | Earth | Utah |
| Weber Basin Equalizing Reservoir 18.5 Davis | High Hazard | — | 1960 | Earth | Utah |
| Weber Basin Equalizing Reservoir 18.8 Davis | High Hazard | — | 1967 | Earth | Utah |
| Weber Basin Equalizing Reservoir 18.9 Davis | High Hazard | — | 1960 | Earth | Utah |
| Weber Basin Equalizing Reservoir 18 Lower Davis | High Hazard | — | 1960 | Earth | Utah |
| Weber Basin Equalizing Reservoir 18 Upper Davis | High Hazard | — | 1960 | Earth | Utah |
| Weber Basin Equalizing Reservoir 1.9 Davis | High Hazard | — | 1962 | Earth | Utah |
| Weber Basin Equalizing Reservoir 19.5 Lower Davis | High Hazard | — | 1960 | Earth | Utah |
| Weber Basin Equalizing Reservoir 19.5 Upper Davis | High Hazard | — | 1960 | Earth | Utah |
| Weber Basin Equalizing Reservoir 2.6 Davis | High Hazard | — | 1962 | Earth | Utah |
| Weber Basin Equalizing Reservoir 4.3 Davis | High Hazard | — | 1962 | Earth | Utah |
| Weber Basin Equalizing Reservoir 5.0 Davis | High Hazard | — | 1962 | Earth | Utah |
| Weber Basin Equalizing Reservoir - Combe Weber | High Hazard | — | 1956 | Earth | Utah |
| Weber Basin Equalizing Reservoir - Farmington Davis | High Hazard | — | 1959 | Earth | Utah |
| Weber Basin - Uintah Bench Lower Equalizing Res. Weber | High Hazard | — | 1959 | Earth | Utah |
| Weber/Box Elder - A Reservoir Weber | High Hazard | — | — | Earth | Utah |
| Weber Dam St. Charles | High Hazard | 72 ft | 2002 | Earth | Missouri |
| Weber Hill Terrace Lake Dam Jefferson | High Hazard | 36 ft | 1957 | Earth | Missouri |
| Weber Pond Dam Avery | High Hazard | — | 2007 | Earth | North Carolina |
| Webster Rooks | High Hazard | 154 ft | 1955 | Earth | Kansas |