Browse Dams
1,289 dams in the National Inventory of Dams.
National Inventory of Dams
Browse 1,289 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 |
|---|---|---|---|---|---|---|---|
| Southington Reservoir #2 Dam | Connecticut | New Haven | 38 | Significant | Satisfactory | 1900 | Water Supply |
| Belleview Lake Dam | Connecticut | New Haven | 38 | High | Satisfactory | 1899 | Recreation |
| Kenmere Reservoir Dam | Connecticut | Hartford | 38 | High | Satisfactory | 1898 | Water Supply |
| Hockanum Reservoir Dam | Connecticut | Tolland | 37 | High | Fair | 1890 | Recreation |
| Scotland | Connecticut | Windham | 37 | Low | Satisfactory | 1909 | Hydroelectric |
| Rock Lake Dam | Connecticut | Fairfield | 37 | Significant | Satisfactory | 1875 | Water Supply |
| American Felt Dam | Connecticut | Fairfield | 37 | High | Satisfactory | 1867 | Recreation |
| Chestnut Hill Reservoir Dam | Connecticut | New Haven | 37 | High | Fair | 1919 | Recreation |
| Maltby No. 1 Dam | Connecticut | New Haven | 37 | High | Satisfactory | 1862 | Water Supply |
| South Norwalk Reservoir Dam | Connecticut | Fairfield | 36 | High | Satisfactory | 1899 | Water Supply |
| Popps Mountain Dike | Connecticut | Fairfield | 36 | High | Satisfactory | 1941 | Water Supply |
| Wood Creek Flood Control Dam Site #9 | Connecticut | Litchfield | 36 | High | Satisfactory | 1971 | Flood Risk Reduction |
| Crystal Lake Dam | Connecticut | Litchfield | 36 | Significant | Fair | 1878 | Water Supply |
| Rugg Brook Reservoir Dam | Connecticut | Litchfield | 36 | Significant | Fair | 1890 | Water Supply |
| Rockwood Lake Dam | Connecticut | Fairfield | 36 | High | Satisfactory | 1893 | Water Supply |
| Pomeroy Flood Control Site #3 Dam | Connecticut | Tolland | 36 | High | Fair | 1960 | Flood Risk Reduction |
| East Mountain Reservoir Dam | Connecticut | New Haven | 35 | High | Satisfactory | 1880 | Recreation |
| Stone Hill Reservoir Dam | Connecticut | New London | 35 | Significant | Satisfactory | 1894 | Water Supply |
| Putnam Reservoir Dam | Connecticut | Fairfield | 35 | High | Satisfactory | 1910 | 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 |
| Sandy Hook | Connecticut | Fairfield | 35 | Significant | Satisfactory | 1905 | Hydroelectric |
| Congdon Pond Dam | Connecticut | New London | 35 | Significant | Poor | 1900 | Hydroelectric |
| Hancock Brook Dam | Connecticut | Litchfield | 35 | High | Not Available | 1966 | Flood Risk Reduction |
| Woodridge Lake Dam | Connecticut | Litchfield | 34 | High | Satisfactory | 1970 | Recreation |
| Lake Saltonstall Dam | Connecticut | New Haven | 34 | High | Satisfactory | 1882 | Water Supply |
| Stillwater Pond Dam | Connecticut | Litchfield | 34 | High | Satisfactory | — | Recreation |
| Mystic Reservoir Dam | Connecticut | New London | 34 | High | Satisfactory | 1880 | Water Supply |
| Johnsons Pond Dam | Connecticut | Litchfield | 34 | Significant | Not Rated | — | Recreation |
| Bronson E. Lockwood Dam | Connecticut | Litchfield | 34 | High | Satisfactory | 1958 | Water Supply |
| Lake Beseck Dam | Connecticut | Middlesex | 34 | Significant | Satisfactory | 1846 | Recreation |
| Hop Brook Dam - Saddle Dike | Connecticut | New Haven | 33 | High | Not Available | 1968 | Flood Risk Reduction |
| Merimere Reservoir Dam (Dike Is 8030) | Connecticut | Hartford | 33 | Significant | Satisfactory | 1870 | Water Supply |
| Canoe Brook Lake Dam | Connecticut | Fairfield | 33 | High | Satisfactory | 1870 | Recreation |
| Union Pond Dam | Connecticut | Hartford | 33 | High | Fair | 1901 | Recreation |
| Bristol Reservoir #2 Dam | Connecticut | Litchfield | 33 | Significant | Satisfactory | 1889 | Water Supply |
| Bushy Hill Pond Dam | Connecticut | Middlesex | 33 | High | Satisfactory | 1871 | Water Supply |
| Bunnells Pond Dam | Connecticut | Fairfield | 33 | High | Fair | 1906 | Recreation |
| Collins Company Lower Dam | Connecticut | Hartford | 33 | Significant | Satisfactory | — | Recreation |
| Scoville Reservoir Dam | Connecticut | New Haven | 32 | High | Satisfactory | 1917 | Recreation |
| Green Falls Reservoir Dam | Connecticut | New London | 32 | Significant | Satisfactory | 1870 | Recreation |
| Trading Cove Pond Dam | Connecticut | New London | 32 | Significant | Fair | 1900 | Recreation |
| Tunnel Dam Hydro Station | Connecticut | New London | 32 | Significant | Satisfactory | 1906 | Hydroelectric |
| Wigwam Reservoir South Dam | Connecticut | Litchfield | 32 | Significant | Satisfactory | 1893 | Water Supply |
| Hartford Reservoir #2 Dam | Connecticut | Hartford | 32 | High | Satisfactory | 1869 | Water Supply |
| Porter Reservoir Dam | Connecticut | Hartford | 32 | Significant | Satisfactory | 1902 | Water Supply |
| Mianus Filter Plant Dam | Connecticut | Fairfield | 31 | High | Fair | 1875 | Water Supply |
| Lake Wintergreen Dam | Connecticut | New Haven | 31 | High | Satisfactory | 1863 | Water Supply |
| City Pond Dam | Connecticut | New London | 31 | Significant | Poor | — | Recreation |
| Seymour Reservoir #2 Dam | Connecticut | New Haven | 31 | Significant | Fair | 1948 | 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.