High Hazard Dams
Loss of human life is likely if the dam fails.
| Dam Name | Hazard | Height | Built | Type | State |
|---|---|---|---|---|---|
| Whigville Reservoir Dam Hartford | High Hazard | 58 ft | 1909 | Earth | Connecticut |
| Whippoorwill Dam Rappahannock | High Hazard | 34 ft | — | Earth | Virginia |
| Whippoorwill Dam Morgan | High Hazard | 40 ft | 1945 | Earth | Indiana |
| Whip-Poor-Will Dam Morgan | High Hazard | 28 ft | 1956 | Earth | Indiana |
| Whippoorwill Lake Maury | High Hazard | — | 1983 | Earth | Tennessee |
| Whippoorwill Lake Dam Harris | High Hazard | 34 ft | 1950 | Earth | Georgia |
| Whipps Mill Rd Dry Dam Jefferson | High Hazard | 21 ft | 1999 | Roller-Compacted Concrete | Kentucky |
| Whiskey Creek Dam Young | High Hazard | 28 ft | 1967 | Earth | Texas |
| Whiskeytown Shasta | High Hazard | 263 ft | 1963 | Earth | California |
| Whispering Hills Lake Dam Jackson | High Hazard | 40 ft | 1930 | Earth | Missouri |
| Whispering Valley Lake #1 Dam Franklin | High Hazard | 41 ft | 1969 | Earth | Missouri |
| Whispering Valley Lake #2 Dam Franklin | High Hazard | 38 ft | 1970 | Earth | Missouri |
| Whispering Valley Lake #3 Franklin | High Hazard | 25 ft | 1973 | Earth | Missouri |
| Whispering Woods Golf Course Dam Moore | High Hazard | — | — | Earth | North Carolina |
| Whisperlake Dam Lexington | High Hazard | 21 ft | — | — | South Carolina |
| Whistle Lake Dam Skagit | High Hazard | — | 1925 | Rockfill | Washington |
| Whitaker Lake Dam Forsyth | High Hazard | — | — | Earth | North Carolina |
| White Clay Oglala Lakota | High Hazard | 22 ft | 1936 | Earth | South Dakota |
| White Cloud Dam Newaygo | High Hazard | 19 ft | 1872 | Earth | Michigan |
| White Crane Lake Dam Sullivan | High Hazard | 29 ft | 2005 | Earth | New York |
| White Cypress Lake Dam Hancock | High Hazard | 27 ft | 1972 | Earth | Mississippi |
| White Dam Shawnee | High Hazard | 19 ft | 1977 | Earth | Kansas |
| White Earth Dam Mountrail | High Hazard | 38 ft | 1970 | Earth | North Dakota |
| Whiteford Lake Dam Lexington | High Hazard | 23 ft | 1989 | — | South Carolina |
| Whitehall Dam 1 Lexington | High Hazard | 19 ft | 1960 | — | South Carolina |
| Whitehall Dam 2 Lexington | High Hazard | 18 ft | 1960 | — | South Carolina |
| White Heron Monroe | High Hazard | 34 ft | 1930 | Earth | Pennsylvania |
| Whitehouse Dam Smith | High Hazard | 50 ft | 1949 | Earth | Texas |
| Whitehurst Lake Dam Madison | High Hazard | 31 ft | 1963 | Earth | Missouri |
| White Lady Valley Dam Montgomery | High Hazard | 42 ft | — | Earth | Missouri |
| White Lake Conservancy District Dam Johnson | High Hazard | 55 ft | 1952 | Earth | Indiana |
| White Lake Dam Harnett | High Hazard | — | 1975 | Earth | North Carolina |
| White Lake Dam Pike | High Hazard | 25 ft | 1966 | Earth | Missouri |
| White Lake Dam Tarrant | High Hazard | 33 ft | 1917 | Earth | Texas |
| White Lake Dam Bexar | High Hazard | 41 ft | 1970 | Earth | Texas |
| White Lake Dam Lincoln | High Hazard | 40 ft | 1980 | Earth | Missouri |
| White Meadow Lake Dam Morris | High Hazard | 15 ft | — | Earth | New Jersey |
| White Memorial Area Sec-16 Lake Dam Lincoln | High Hazard | 25 ft | — | Earth | Missouri |
| White Myatt Dam Macon | High Hazard | — | — | Earth | North Carolina |
| White Oak Creek Dam Dickenson | High Hazard | 29 ft | — | Earth | Virginia |
| White Oak Lake Dam Wake | High Hazard | — | — | Earth | North Carolina |
| White Oak Mtn. Dam #1 Polk | High Hazard | — | — | Earth | North Carolina |
| White Oak Mtn. Dam #2 Polk | High Hazard | — | — | Earth | North Carolina |
| White Oak Mtn. Dam #4 Polk | High Hazard | — | — | Earth | North Carolina |
| White Oak Pond Wayne | High Hazard | 26 ft | 1830 | Earth | Pennsylvania |
| White Oak/White Oak 1/Coal Refuse 2 Dam Hamilton | High Hazard | 76 ft | 2016 | Earth | Illinois |
| White Pine Salt Lake | High Hazard | — | 1933 | Earth | Utah |
| White Plains Reservoir #1 Dam Westchester | High Hazard | 25 ft | 1900 | Concrete | New York |
| White Plains Reservoir #2 Dam Westchester | High Hazard | 35 ft | 1907 | Earth | New York |
| White Rapids Marinette | High Hazard | 39 ft | 1927 | Concrete | Michigan |