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 |
|---|---|---|---|---|---|---|---|
| Abbott'S Pond Dam | Connecticut | Windham | 28 | Significant | Satisfactory | 1960 | Recreation |
| Portland Reservoir Dam | Connecticut | Middlesex | 28 | High | Satisfactory | 1964 | Water Supply |
| Risdon Pond Dam | Connecticut | New Haven | 27 | Significant | Unsatisfactory | 1890 | Water Supply |
| Walnut Hill Pond Dam | Connecticut | Fairfield | 27 | Significant | Fair | 1962 | Recreation |
| Shenipsit Lake Dam | Connecticut | Tolland | 27 | High | Satisfactory | 1903 | Water Supply |
| Merimere Reservoir Dike (Dam Is 705) | Connecticut | New Haven | 27 | High | Fair | 1870 | Water Supply |
| Case Brothers Lower Pond Dam | Connecticut | Hartford | 27 | Significant | Poor | 1870 | Recreation |
| Hanover Reservoir Dam | Connecticut | New London | 27 | High | Fair | 1900 | Recreation |
| Highland Lake Dam | Connecticut | Litchfield | 27 | High | Fair | 1860 | Recreation |
| Rugg Brook Reservoir Northeast Dike | Connecticut | Litchfield | 26 | Significant | Satisfactory | — | Water Supply |
| Williams Pond Dam | Connecticut | New London | 26 | Significant | Satisfactory | 1865 | Recreation |
| Black Pond Dam | Connecticut | New Haven | 26 | High | Fair | 1880 | Recreation |
| Southington Reservoir #3 Dam (Dike # 13132) | Connecticut | Hartford | 26 | High | Satisfactory | — | Water Supply |
| Glasgo Pond Dam | Connecticut | New London | 26 | High | Satisfactory | 1860 | Recreation |
| Seymour Reservoir #1 Dam | Connecticut | New Haven | 26 | Significant | Fair | 1898 | Water Supply |
| Ymca Camp Farnam Pond Dam | Connecticut | Middlesex | 26 | Significant | Fair | 1931 | Recreation |
| Oxoboxo Lake Dam | Connecticut | New London | 26 | High | Satisfactory | 1810 | Recreation |
| Halchek Pond Dam | Connecticut | Tolland | 26 | Significant | Fair | 1972 | Recreation |
| Dobsonville Pond Dam | Connecticut | Tolland | 26 | Significant | Fair | 1900 | Recreation |
| Stevens Mill Pond Dam | Connecticut | Hartford | 25 | Significant | Not Rated | 1954 | Other |
| Ashland Pond Dam | Connecticut | New London | 25 | High | Satisfactory | 1800 | Recreation |
| Aldon Mill Pond Dam | Connecticut | Tolland | 25 | Significant | Satisfactory | 1920 | Recreation |
| North Grosvenordale Dam | Connecticut | Windham | 25 | High | Poor | 1900 | Recreation |
| Lake Housatonic | Connecticut | New Haven | 25 | High | Satisfactory | 1870 | Hydroelectric |
| Shelton Canal Dike | Connecticut | Fairfield | 25 | Low | Satisfactory | 1870 | Hydroelectric |
| Leesville Dam | Connecticut | Middlesex | 25 | High | Satisfactory | 1900 | Recreation |
| Bristol Reservoir #1 Dam | Connecticut | Hartford | 25 | High | Satisfactory | 1885 | Water Supply |
| Johnson Millpond Dam | Connecticut | Middlesex | 25 | Significant | Satisfactory | 1880 | Recreation |
| Blue Hills Flood Control Site #2 Dam | Connecticut | Hartford | 25 | High | Fair | 1964 | Flood Risk Reduction |
| Kensington Dam | Connecticut | Hartford | 25 | High | Satisfactory | 1901 | Recreation |
| Straitsville Reservoir Dam | Connecticut | New Haven | 25 | Significant | Fair | 1900 | Water Supply |
| Powers Lake Dam | Connecticut | New London | 25 | Significant | Poor | 1870 | Recreation |
| Shadow Lake Dam | Connecticut | Fairfield | 25 | Significant | Fair | 1937 | Recreation |
| Ville Pond Dam | Connecticut | Fairfield | 25 | Significant | Satisfactory | — | Recreation |
| Batterson Park Pond Dam | Connecticut | Hartford | 25 | High | Satisfactory | 1878 | Recreation |
| Lower Kohanza Lake Dam | Connecticut | Fairfield | 25 | High | Satisfactory | 1860 | Water Supply |
| Avery Flood Control Site #2 Dam | Connecticut | Hartford | 25 | High | Satisfactory | 1993 | Flood Risk Reduction |
| Hanover Pond | Connecticut | New Haven | 25 | High | Satisfactory | 2006 | Hydroelectric |
| Mansfield Recreation Pond | Connecticut | Tolland | 25 | Significant | Satisfactory | 1974 | Recreation |
| Cargill Falls | Connecticut | Windham | 24 | Significant | Satisfactory | 1925 | Hydroelectric |
| Elmere Reservoir Dam | Connecticut | Hartford | 24 | Significant | Satisfactory | — | Other |
| Factory Pond Dam | Connecticut | Fairfield | 24 | High | Poor | 1874 | Recreation |
| Candee Reservoir Dam | Connecticut | New Haven | 24 | Significant | Satisfactory | — | Water Supply |
| Dooley Pond Dam | Connecticut | Middlesex | 24 | High | Fair | 1870 | Recreation |
| Bulls Bridge | Connecticut | Litchfield | 24 | Low | Satisfactory | 1902 | Hydroelectric |
| West River Pond Dam | Connecticut | New Haven | 24 | Significant | Fair | — | Recreation |
| Drobney Dam | Connecticut | Tolland | 24 | Significant | Satisfactory | 1970 | Recreation |
| Quassapaug Lake Dam | Connecticut | New Haven | 24 | Significant | Fair | 1900 | Recreation |
| Lake Winnemaug Dam | Connecticut | Litchfield | 24 | High | Satisfactory | 1920 | Recreation |
| Bashan Lake Dam | Connecticut | Middlesex | 24 | Significant | Satisfactory | 1939 | Recreation |
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.