Significant Hazard Dams
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
| Dam Name | Hazard | Height | Built | Type | State |
|---|---|---|---|---|---|
| Budge Sonoma | Significant Hazard | 28 ft | 1964 | Earth | California |
| Buechel Basin #3 Jefferson | Significant Hazard | 10 ft | 2015 | Earth | Kentucky |
| Buehler Lake Pike | Significant Hazard | 7 ft | 1857 | Earth | Pennsylvania |
| Bueler Dairy Waste Storage Pond Snohomish | Significant Hazard | — | 2000 | Earth | Washington |
| Buena Vista Kern | Significant Hazard | 20 ft | 1890 | Earth | California |
| Buena Vista Winery Sonoma | Significant Hazard | 40 ft | 1971 | Earth | California |
| Buescher State Park Lake Dam Bastrop | Significant Hazard | 26 ft | 1936 | Earth | Texas |
| Buffalo Creek B-1 Dawson | Significant Hazard | 62 ft | 1982 | Earth | Nebraska |
| Buffalo Creek B-3 Dawson | Significant Hazard | 44 ft | 1980 | Earth | Nebraska |
| Buffalo Creek Dam # 1 Prince Edward | Significant Hazard | 36 ft | — | Earth | Virginia |
| Buffalo Creek Dam # 3 Prince Edward | Significant Hazard | 51 ft | — | Earth | Virginia |
| Buffalo Creek Dam # 5 Prince Edward | Significant Hazard | 37 ft | — | Earth | Virginia |
| Buffalo Creek Dam # 6 Prince Edward | Significant Hazard | 38 ft | — | Earth | Virginia |
| Buffalo Creek Dam # 7 Prince Edward | Significant Hazard | 36 ft | — | Earth | Virginia |
| Buffalo Creek Dam # 8 Prince Edward | Significant Hazard | 38 ft | — | Earth | Virginia |
| Buffalo Creek Dam # 9 Prince Edward | Significant Hazard | 41 ft | — | Earth | Virginia |
| Buffalo Drive Dam Sangamon | Significant Hazard | 24 ft | 1950 | Earth | Illinois |
| Buffalo Hill Garfield | Significant Hazard | 20 ft | 1936 | Earth | Montana |
| Buffalo Hills Lake Dam Noble | Significant Hazard | 15 ft | 1973 | Earth | Ohio |
| Buffalo Lake Road Dam 1 Ziebach | Significant Hazard | 95 ft | 1961 | Earth | South Dakota |
| Buffalo Lake Road Dam 2 Meade | Significant Hazard | 82 ft | 1961 | Earth | South Dakota |
| Buffalo Trace Lake Dam Harrison | Significant Hazard | 15 ft | 1971 | Earth | Indiana |
| Buffington Lake Dam Saline | Significant Hazard | 18 ft | 1947 | Earth | Arkansas |
| Buffumville Pond Dam Worcester | Significant Hazard | 17 ft | — | Concrete | Massachusetts |
| Buford Lake Dam Miller | Significant Hazard | — | 1968 | Earth | Arkansas |
| Bugger Lake Dam Lincoln | Significant Hazard | — | — | Other | North Carolina |
| Buick Lower Treatment Dam Reynolds | Significant Hazard | 25 ft | — | Earth | Missouri |
| Bullard Creek No. 2 Goodhue | Significant Hazard | 38 ft | 1977 | Earth | Minnesota |
| Bull Basin #2 Mesa | Significant Hazard | 20 ft | 1953 | Earth | Colorado |
| Bull Creek #5 Mesa | Significant Hazard | 26 ft | 1901 | Earth | Colorado |
| Bullfrog Lake Dam Cook | Significant Hazard | 17 ft | 1958 | Earth | Illinois |
| Bulloughs Pond Dam Middlesex | Significant Hazard | 9 ft | — | — | Massachusetts |
| Bull Pond Dam Dam Litchfield | Significant Hazard | 4 ft | 1900 | Concrete | Connecticut |
| Bull Run Fossil Plant - Ash & Gypsum Disposal Area Perimeter Dike Anderson | Significant Hazard | 18 ft | 1966 | Earth | Tennessee |
| Bungalow Park Dam Atlantic | Significant Hazard | 7 ft | — | Earth | New Jersey |
| Bunnell Pond Litchfield | Significant Hazard | 7 ft | — | Earth | Connecticut |
| Burba Lake Dam Anne Arundel | Significant Hazard | 16 ft | 1927 | Earth | Maryland |
| Burchard Lake Dam Pawnee | Significant Hazard | 45 ft | 1959 | Earth | Nebraska |
| Burden Lake Dam Rensselaer | Significant Hazard | 24 ft | 1916 | Earth | New York |
| Burdick Bros Dam Windham | Significant Hazard | 7 ft | — | Earth | Connecticut |
| Burem Lake Hawkins | Significant Hazard | — | 1970 | Earth | Tennessee |
| Burge Lake Dam Clarke | Significant Hazard | — | 1958 | Earth | Alabama |
| Burgess #1 Teller | Significant Hazard | 32 ft | 1965 | Earth | Colorado |
| Burgess Dam Walton | Significant Hazard | 12 ft | 1965 | Earth | Florida |
| Burgess Falls Putnam | Significant Hazard | — | 1928 | Concrete | Tennessee |
| Burgess Lake Dam Mahoning | Significant Hazard | 27 ft | 1915 | Earth | Ohio |
| Burgess Lake Dam Jackson | Significant Hazard | — | — | Earth | North Carolina |
| Burk Dam Adair | Significant Hazard | 26 ft | 1968 | Earth | Missouri |
| Burke Richland | Significant Hazard | 15 ft | 1948 | Earth | Montana |
| Burkette Lake Dam York | Significant Hazard | 19 ft | 1970 | — | South Carolina |