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 |
|---|---|---|---|---|---|
| Briscoe Dam Garden | Significant Hazard | 34 ft | 1981 | Earth | Nebraska |
| Bristlecone El Paso | Significant Hazard | 72 ft | 1986 | Earth | Colorado |
| Bristol Babcock Reservoir #1 Dam New Haven | Significant Hazard | 18 ft | — | Earth | Connecticut |
| Bristol Blake State Reservoir Dam Norfolk | Significant Hazard | 15 ft | 1961 | Concrete | Massachusetts |
| Bristol Fish & Game Club Dam New Haven | Significant Hazard | 20 ft | 1961 | Earth | Connecticut |
| Bristol Head #2 Mineral | Significant Hazard | 30 ft | 1928 | Earth | Colorado |
| Bristol Lake Dam Clermont | Significant Hazard | 13 ft | 1954 | Earth | Ohio |
| Bristol Myers Squibb Dam New Haven | Significant Hazard | 12 ft | — | Concrete | Connecticut |
| Bristol Reservoir #2 Dam Litchfield | Significant Hazard | 33 ft | 1889 | Earth | Connecticut |
| Bristol Reservoir #3 Dam Litchfield | Significant Hazard | 14 ft | — | Earth | Connecticut |
| Bristol Reservoir #4 Dam Litchfield | Significant Hazard | 40 ft | 1906 | Earth | Connecticut |
| Broadacre Lake Mineral | Significant Hazard | 29 ft | 1956 | Earth | Colorado |
| Broadacres Lake Dam Richmond | Significant Hazard | — | 1934 | Earth | North Carolina |
| Broad Brook Mill Pond Dam Hartford | Significant Hazard | 21 ft | 1880 | Earth | Connecticut |
| Broadmoor Lake Dam Albemarle | Significant Hazard | 25 ft | — | Earth | Virginia |
| Broadway Lake Dam Anderson | Significant Hazard | 37 ft | 1940 | — | South Carolina |
| Broccardo Lake Dam Washington | Significant Hazard | — | 1968 | Earth | Arkansas |
| Brockton Reservoir Dam Norfolk | Significant Hazard | 17 ft | 1885 | Earth | Massachusetts |
| Brockton Road Dam Wake | Significant Hazard | — | — | Earth | North Carolina |
| Brockville Waste Weir Dam Orleans | Significant Hazard | 16 ft | 1918 | Concrete | New York |
| Brodie Millpond Lexington | Significant Hazard | 20 ft | — | — | South Carolina |
| Brodie Pond Dam New London | Significant Hazard | 13 ft | — | Masonry | Connecticut |
| Broken Aro Slurry Pond No. 1 Dam Coshocton | Significant Hazard | 49 ft | 1962 | Earth | Ohio |
| Bronson Windsor | Significant Hazard | 27 ft | 1976 | Earth | Vermont |
| Bronson Pond Wayne | Significant Hazard | 8 ft | 1913 | Earth | Pennsylvania |
| Bronx River Dam (North) Bronx | Significant Hazard | 18 ft | 1900 | Masonry | New York |
| Brookberry Farm Lake Dam South Forsyth | Significant Hazard | — | — | Earth | North Carolina |
| Brook Crossing Detention Chester | Significant Hazard | 11 ft | — | Earth | Pennsylvania |
| Brookdale Dam McHenry | Significant Hazard | 8 ft | — | Concrete | Illinois |
| Brookhaven Addition Lake Dam Grant | Significant Hazard | 18 ft | 1962 | Earth | Indiana |
| Brook Lodge Dam Kalamazoo | Significant Hazard | 10 ft | 1880 | Earth | Michigan |
| Brooklyn Coos | Significant Hazard | 19 ft | 1919 | — | New Hampshire |
| Brookneal Dam Campbell | Significant Hazard | 52 ft | 1963 | Earth | Virginia |
| Brooks Talladega | Significant Hazard | — | — | Earth | Alabama |
| Brooks Creek Dam Macon | Significant Hazard | — | — | Earth | North Carolina |
| Brookside Mill Dam Middlesex | Significant Hazard | 16 ft | 1862 | Masonry | Massachusetts |
| Brooks Lake Wayne | Significant Hazard | 7 ft | — | Earth | Pennsylvania |
| Brooks Lake Dam Orange | Significant Hazard | 10 ft | — | Stone | New York |
| Brooks Pond Dam Richmond | Significant Hazard | 20 ft | — | Earth | New York |
| Brookville Subdivision Dam Monroe | Significant Hazard | 13 ft | 1990 | Earth | New York |
| Brookville Waterworks Jefferson | Significant Hazard | 24 ft | 1912 | Earth | Pennsylvania |
| Brookwood Forest Dam Buncombe | Significant Hazard | — | — | Earth | North Carolina |
| Broomsedge Lake Dam Jennings | Significant Hazard | 24 ft | 1965 | Earth | Indiana |
| Brophy Pond Dam Litchfield | Significant Hazard | 15 ft | 1900 | Earth | Connecticut |
| Brost Number 1 Jones | Significant Hazard | 32 ft | 1959 | Earth | South Dakota |
| Brown Talladega | Significant Hazard | — | 1965 | Earth | Alabama |
| Brown Rutland | Significant Hazard | 22 ft | 1971 | Earth | Vermont |
| Brown Deer Golf Course Dam Johnson | Significant Hazard | 46 ft | 1970 | Earth | Iowa |
| Browne Lake Daggett | Significant Hazard | — | 1957 | Earth | Utah |
| Brownell Pond Dam Middlesex | Significant Hazard | 8 ft | — | — | Connecticut |