Browse Dams
1,316 dams in the National Inventory of Dams.
National Inventory of Dams
Browse 1,316 dams from the NID database. Each record includes dam name, location, physical dimensions, hazard potential classification, condition assessment, purpose, owner information, and emergency action plan status. Use the filters below to search by state, hazard level, condition, or keyword.
| Name | State | County | Height (ft) | Hazard | Condition | Year | Purpose |
|---|---|---|---|---|---|---|---|
| Burnt Hill Flood Control Dam | Connecticut | Hartford | 38 | High | Satisfactory | 1966 | Flood Risk Reduction |
| Ellis Flood Control Site #2 Dam | Connecticut | Tolland | 38 | High | Satisfactory | 1960 | Flood Risk Reduction |
| Belleview Lake Dam | Connecticut | New Haven | 38 | High | Satisfactory | 1899 | Recreation |
| Southington Reservoir #2 Dam | Connecticut | New Haven | 38 | Significant | Satisfactory | 1900 | Water Supply |
| Chestnut Hill Reservoir Dam | Connecticut | New Haven | 37 | High | Fair | 1919 | Recreation |
| American Felt Dam | Connecticut | Fairfield | 37 | High | Satisfactory | 1867 | Recreation |
| Hockanum Reservoir Dam | Connecticut | Tolland | 37 | High | Fair | 1890 | Recreation |
| Scotland | Connecticut | Windham | 37 | Low | Fair | 1909 | Hydroelectric |
| Rock Lake Dam | Connecticut | Fairfield | 37 | Significant | Satisfactory | 1875 | Water Supply |
| Maltby No. 1 Dam | Connecticut | New Haven | 37 | High | Satisfactory | 1862 | Water Supply |
| Pomeroy Flood Control Site #3 Dam | Connecticut | Tolland | 36 | High | Fair | 1960 | Flood Risk Reduction |
| Rugg Brook Reservoir Dam | Connecticut | Litchfield | 36 | Significant | Fair | 1890 | Water Supply |
| Crystal Lake Dam | Connecticut | Litchfield | 36 | Significant | Fair | 1878 | Water Supply |
| Wood Creek Flood Control Dam Site #9 | Connecticut | Litchfield | 36 | High | Satisfactory | 1971 | Flood Risk Reduction |
| Popps Mountain Dike | Connecticut | Fairfield | 36 | High | Satisfactory | 1941 | Water Supply |
| South Norwalk Reservoir Dam | Connecticut | Fairfield | 36 | High | Satisfactory | 1899 | Water Supply |
| Rockwood Lake Dam | Connecticut | Fairfield | 36 | High | Satisfactory | 1893 | Water Supply |
| Middle Reservoir Dam | Connecticut | New Haven | 35 | Significant | Satisfactory | 1890 | Water Supply |
| Asylum Reservoir #2 Dam | Connecticut | Middlesex | 35 | Significant | Fair | - | Water Supply |
| Putnam Reservoir Dam | Connecticut | Fairfield | 35 | High | Satisfactory | 1910 | Water Supply |
| Stone Hill Reservoir Dam | Connecticut | New London | 35 | Significant | Satisfactory | 1894 | Water Supply |
| Congdon Pond Dam | Connecticut | New London | 35 | Significant | Poor | 1900 | Hydroelectric |
| Sandy Hook | Connecticut | Fairfield | 35 | Significant | Satisfactory | 1905 | Hydroelectric |
| Hancock Brook Dam | Connecticut | Litchfield | 35 | High | Not Available | 1966 | Flood Risk Reduction |
| East Mountain Reservoir Dam | Connecticut | New Haven | 35 | High | Satisfactory | 1880 | Recreation |
| Woodridge Lake Dam | Connecticut | Litchfield | 34 | High | Satisfactory | 1970 | Recreation |
| Lake Beseck Dam | Connecticut | Middlesex | 34 | Significant | Satisfactory | 1846 | Recreation |
| Huntington Pond Dike 2 | Connecticut | Fairfield | 34 | Significant | - | - | |
| Mystic Reservoir Dam | Connecticut | New London | 34 | High | Satisfactory | 1880 | Water Supply |
| Bronson E. Lockwood Dam | Connecticut | Litchfield | 34 | High | Satisfactory | 1958 | Water Supply |
| Lake Saltonstall Dam | Connecticut | New Haven | 34 | High | Satisfactory | 1882 | Water Supply |
| Johnsons Pond Dam | Connecticut | Litchfield | 34 | Significant | Not Rated | - | Recreation |
| Stillwater Pond Dam | Connecticut | Litchfield | 34 | High | Satisfactory | - | Recreation |
| Bristol Reservoir #2 Dam | Connecticut | Litchfield | 33 | Significant | Satisfactory | 1889 | Water Supply |
| Collins Company Lower Dam | Connecticut | Hartford | 33 | Significant | Satisfactory | - | Recreation |
| Merimere Reservoir Dam | Connecticut | Hartford | 33 | High | Satisfactory | 1870 | Water Supply |
| Union Pond Dam | Connecticut | Hartford | 33 | High | Fair | 1901 | Recreation |
| Bunnells Pond Dam | Connecticut | Fairfield | 33 | High | Fair | 1906 | Recreation |
| Bushy Hill Pond Dam | Connecticut | Middlesex | 33 | High | Satisfactory | 1871 | Water Supply |
| Canoe Brook Lake Dam | Connecticut | Fairfield | 33 | High | Satisfactory | 1870 | Recreation |
| Hop Brook Dam - Saddle Dike | Connecticut | New Haven | 33 | High | Not Available | 1968 | Flood Risk Reduction |
| Green Falls Reservoir Dam | Connecticut | New London | 32 | Significant | Satisfactory | 1870 | Recreation |
| Tunnel Dam Hydro Station | Connecticut | New London | 32 | Significant | Satisfactory | 1906 | Hydroelectric |
| Porter Reservoir Dam | Connecticut | Hartford | 32 | Significant | Satisfactory | 1902 | Water Supply |
| Wigwam Reservoir South Dam | Connecticut | Litchfield | 32 | Significant | Satisfactory | 1893 | Water Supply |
| Trading Cove Pond Dam | Connecticut | New London | 32 | Significant | Fair | 1900 | Recreation |
| Scoville Reservoir Dam | Connecticut | New Haven | 32 | High | Satisfactory | 1917 | Recreation |
| Hartford Reservoir #2 Dam | Connecticut | Hartford | 32 | High | Satisfactory | 1869 | Water Supply |
| South Flood Control Dam | Connecticut | Hartford | 31 | High | Satisfactory | 1964 | Flood Risk Reduction |
| Seymour Reservoir #2 Dam | Connecticut | New Haven | 31 | Significant | Fair | 1931 | Water Supply |
Frequently Asked Questions
Hazard potential is based on the consequences of dam failure, not the condition of the dam. High hazard means loss of human life is probable. Significant means economic and environmental losses are expected but no probable loss of life. Low means minimal losses are expected. The classification considers downstream population, infrastructure, and environmental resources.
Condition ratings reflect the physical state of the dam based on periodic inspections. Satisfactory means no deficiencies found. Fair means minor issues exist but no immediate action needed. Poor means safety deficiencies require remedial action. Unsatisfactory means the dam is unsafe and immediate corrective action is required.
Yes. Use the search field above to find dams by name. You can also combine the search with state, hazard, and condition filters to narrow your results. Each dam record links to a detail page with complete information.