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 |
|---|---|---|---|---|---|---|---|
| Spaulding Pond Dam | Connecticut | New London | 31 | High | Satisfactory | 1965 | Flood Risk Reduction |
| City Pond Dam | Connecticut | New London | 31 | Significant | Poor | — | Recreation |
| South Flood Control Dam | Connecticut | Hartford | 31 | High | Satisfactory | 1964 | Flood Risk Reduction |
| Lake Wintergreen Dam | Connecticut | New Haven | 31 | High | Satisfactory | 1863 | Water Supply |
| Hatch Pond Dam | Connecticut | Litchfield | 31 | Significant | Poor | 1900 | Recreation |
| Tantaquidgeon | Connecticut | New London | 30 | Low | Satisfactory | — | Recreation |
| Taftville Reservoir #1 Dam | Connecticut | New London | 30 | Significant | Fair | 1880 | Recreation |
| Clarks Pond Dam | Connecticut | New Haven | 30 | Significant | Satisfactory | — | Recreation |
| Staffordville Reservoir Dam | Connecticut | Tolland | 30 | High | Satisfactory | 1850 | Recreation |
| Upper Kohanza Lake Dam | Connecticut | Fairfield | 30 | High | Satisfactory | 1866 | Water Supply |
| Taftville Reservoir #2 Dam | Connecticut | New London | 30 | Significant | Poor | 1910 | Water Supply |
| Old Marsh Pond Dam | Connecticut | Litchfield | 30 | High | Satisfactory | 1913 | Water Supply |
| Converse Lake Dam | Connecticut | Fairfield | 30 | High | Fair | 1900 | Recreation |
| Ledyard Reservoir Dam | Connecticut | New London | 30 | Significant | Satisfactory | 1954 | Water Supply |
| Fairview Reservoir Dam and Dikes | Connecticut | New London | 30 | High | Satisfactory | 1868 | Water Supply |
| Paper Goods Pond Dam | Connecticut | Hartford | 30 | Significant | Fair | 1920 | Recreation |
| Buckingham Reservoir Dam | Connecticut | Hartford | 30 | Significant | Fair | 1925 | Recreation |
| Talcott Flood Control Dam #1 | Connecticut | Hartford | 30 | High | Satisfactory | 1964 | Flood Risk Reduction |
| Lake Harwinton Dam | Connecticut | Litchfield | 30 | High | Satisfactory | 1930 | Recreation |
| Mount Higby Reservoir Dam | Connecticut | Middlesex | 30 | High | Satisfactory | 1897 | Water Supply |
| Asylum Reservoir #4 Dam | Connecticut | Middlesex | 30 | Significant | Satisfactory | — | Water Supply |
| Baltic Reservoir Dam (West) | Connecticut | New London | 30 | Significant | Satisfactory | 1900 | Water Supply |
| Shenipsit Flood Control Site #6 Dam | Connecticut | Tolland | 29 | High | Satisfactory | 1961 | Flood Risk Reduction |
| Padanaram Reservoir Dam | Connecticut | Fairfield | 29 | High | Satisfactory | 1883 | Water Supply |
| Willimantic Reservoir Dam | Connecticut | Windham | 29 | High | Satisfactory | 1885 | Water Supply |
| Lake Phipps Dam #1 | Connecticut | New Haven | 29 | High | Satisfactory | 1880 | Recreation |
| Mackenzie Reservoir Dam | Connecticut | New Haven | 29 | High | Fair | 1944 | Water Supply |
| Ellithorpe Flood Control Site #5 Dam | Connecticut | Tolland | 29 | High | Fair | 1968 | Flood Risk Reduction |
| Chestnut Ridge Dam | Connecticut | Fairfield | 29 | High | Fair | 1910 | Water Supply |
| Bloomfield Flood Control Site #3 Dam | Connecticut | Hartford | 29 | High | Satisfactory | 1962 | Flood Risk Reduction |
| Margerie Lake Reservoir South Dam | Connecticut | Fairfield | 29 | High | Satisfactory | 1933 | Water Supply |
| Bradway Reservoir Site #4 Dam | Connecticut | Tolland | 29 | Significant | Satisfactory | 1961 | Flood Risk Reduction |
| Laurel Lake Dam | Connecticut | Litchfield | 29 | Significant | Satisfactory | 1965 | Recreation |
| Robertsville Dam | Connecticut | Litchfield | 29 | Significant | Satisfactory | 1887 | Hydroelectric |
| New Britain Reservoir Dike | Connecticut | Hartford | 29 | High | Satisfactory | 1904 | Water Supply |
| Farm Brook Flood Control Site #2a Dam | Connecticut | New Haven | 29 | High | Satisfactory | — | Flood Risk Reduction |
| Samp Mortar Reservoir Dam | Connecticut | Fairfield | 29 | High | Satisfactory | 1901 | Recreation |
| Maltby Lake West Dam #3 | Connecticut | New Haven | 29 | Significant | Satisfactory | 1862 | Water Supply |
| Seymour Reservoir #4 Dam | Connecticut | New Haven | 28 | Significant | Poor | 1951 | Water Supply |
| Paper Mill Pond Dam | Connecticut | New London | 28 | Significant | Poor | 1870 | Water Supply |
| Columbia Lake Dam | Connecticut | Tolland | 28 | High | Satisfactory | 1865 | Recreation |
| Swan Lake Dam | Connecticut | New Haven | 28 | High | Fair | 1920 | Irrigation |
| Pinewood Lake Dam | Connecticut | Fairfield | 28 | High | Satisfactory | 1890 | Recreation |
| Farm Brook Pond Site 2b | Connecticut | New Haven | 28 | High | Satisfactory | — | Fish and Wildlife Pond |
| Lake Forest Dam | Connecticut | Fairfield | 28 | High | Satisfactory | 1899 | Recreation |
| Portland Reservoir Dam | Connecticut | Middlesex | 28 | High | Satisfactory | 1964 | Water Supply |
| Deep Hollow Reservoir Dam | Connecticut | Middlesex | 28 | Significant | Satisfactory | 1854 | Water Supply |
| Abbott'S Pond Dam | Connecticut | Windham | 28 | Significant | Satisfactory | 1960 | Recreation |
| Adder Reservoir | Connecticut | Middlesex | 28 | High | Fair | 1934 | Water Supply |
| Risley Reservoir Dam (No Longer Using 14605) | Connecticut | Tolland | 28 | Significant | Fair | 1853 | 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.