High Hazard Dams
Loss of human life is likely if the dam fails.
| Dam Name | Hazard | Height | Built | Type | State |
|---|---|---|---|---|---|
| 100 Rex Place Dam Franklin | High Hazard | — | — | Earth | North Carolina |
| 102 River Tributaries Dam C-5 Nodaway | High Hazard | 36 ft | 1975 | Earth | Missouri |
| 102 Riv Trib Wtrshd Strctr Lt-36 Nodaway | High Hazard | 30 ft | 1975 | Earth | Missouri |
| 10 Mg Walteria Los Angeles | High Hazard | 40 ft | 1953 | Other | California |
| 131 Shawnee | High Hazard | 41 ft | 2004 | Earth | Kansas |
| 13th Street Dam Harnett | High Hazard | — | — | Other | North Carolina |
| 14-North Impoundment Allegheny | High Hazard | 42 ft | — | Earth | Pennsylvania |
| 1516 Glenn Valley Dam Mecklenburg | High Hazard | — | — | Earth | North Carolina |
| 15-27 Brown | High Hazard | 25 ft | 2003 | Earth | Kansas |
| 153 Wabaunsee | High Hazard | 32 ft | 2007 | Earth | Kansas |
| 18 Mg Walteria Los Angeles | High Hazard | 31 ft | 1987 | Other | California |
| 21st Street Dam Cloud | High Hazard | 25 ft | 2015 | Earth | Kansas |
| 2nd Broad River Watershed Dam #13 Rutherford | High Hazard | — | 1990 | Earth | North Carolina |
| 2nd Broad River Watershed Dam #14 Rutherford | High Hazard | — | 1982 | Earth | North Carolina |
| 2nd Broad River Watershed Dam #16 Rutherford | High Hazard | — | 1979 | Earth | North Carolina |
| 2nd Broad River Watershed Dam #2 Rutherford | High Hazard | — | 1995 | Earth | North Carolina |
| 2nd Broad River Watershed Dam #22 Rutherford | High Hazard | — | 1978 | Earth | North Carolina |
| 2nd Broad River Watershed Dam #23 Rutherford | High Hazard | — | 1979 | Earth | North Carolina |
| 30 Foot Dam Tompkins | High Hazard | 36 ft | 1903 | Arch | New York |
| 30 Mg Central Reservoir Orange | High Hazard | 30 ft | 1924 | Earth | California |
| 36601 Jim Owings Dam Jackson | High Hazard | 26 ft | — | — | Missouri |
| 380 Town Centre Dam Collin | High Hazard | 28 ft | — | — | Texas |
| 3 Amigos Reservoir Chelan | High Hazard | — | 2003 | Earth | Washington |
| #3 Slurry Pond Anson | High Hazard | 30 ft | — | Earth | North Carolina |
| 40th Place Dam Forrest | High Hazard | 27 ft | 1995 | Earth | Mississippi |
| 4-J Farms Lower Lake Dam Crawford | High Hazard | 20 ft | 1974 | Earth | Georgia |
| 4-S Ranch Reclamation Reservoir San Diego | High Hazard | 22 ft | 2000 | Earth | California |
| 4th Avenue Storm Detention Dam Buffalo | High Hazard | 19 ft | 1989 | Earth | Nebraska |
| 4 West Graham | High Hazard | 226 ft | — | Earth | Arizona |
| 5-C Impoundment Washington | High Hazard | 44 ft | — | Earth | Georgia |
| #6 Monterey | High Hazard | 68 ft | — | Earth | California |
| 60 Foot Dam Tompkins | High Hazard | 75 ft | 1911 | Arch | New York |
| 6301 Grasshopper Road Dam Wake | High Hazard | — | — | Earth | North Carolina |
| 650 Caribou Road Dam Buncombe | High Hazard | — | — | Other | North Carolina |
| 7 Starr Lake Dam Madison | High Hazard | 10 ft | 2000 | Earth | Mississippi |
| 8 - North Sector Butler | High Hazard | 27 ft | 2006 | Earth | Kansas |
| 96th St & Hoover Road Harvey | High Hazard | 12 ft | 2010 | Earth | Kansas |
| A-1 Apache | High Hazard | — | 1966 | Earth | Arizona |
| Aahoaka Reservoir Kauai | High Hazard | 36 ft | 1910 | Earth | Hawaii |
| Aaran Lakes West Dam Cumberland | High Hazard | — | — | Earth | North Carolina |
| Aaron River Dam Norfolk | High Hazard | 30 ft | 1976 | Earth | Massachusetts |
| Aaron Sink Farm Pond Dam Guilford | High Hazard | — | — | Other | North Carolina |
| Aaron Way Detention Basin Dam Clark | High Hazard | 30 ft | 1992 | Earth | Nevada |
| Ab-Bc Pinal | High Hazard | 150 ft | — | Earth | Arizona |
| Abbey Lake Dam Berkshire | High Hazard | 40 ft | 1967 | Earth | Massachusetts |
| Abbott Brook Dike Oxford | High Hazard | 27 ft | 1911 | Other | Maine |
| Abbotts Hollow Dam | High Hazard | — | — | Other | West Virginia |
| Abbotts Pond Dam Sussex | High Hazard | 15 ft | 1960 | Gravity | Delaware |
| Abbott Wash Detention Basin Dam Clark | High Hazard | 27 ft | 2008 | Earth | Nevada |
| A.B. Brown Power Plant Posey | High Hazard | 68 ft | 1975 | Earth | Indiana |