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 |
|---|---|---|---|---|---|---|---|
| Wononpakook Lake Dam | Connecticut | Litchfield | 10 | Significant | Not Rated | 1920 | Recreation |
| Witch Hazel Mill Pond Dam | Connecticut | New Haven | 10 | Significant | Poor | — | Recreation |
| Middle Pond Dam and Dike | Connecticut | Litchfield | 10 | Significant | Poor | 1900 | Recreation |
| Derby Dike | Connecticut | New Haven | 10 | Low | Satisfactory | 1870 | Hydroelectric |
| Mansfield Training Dam #1 | Connecticut | Tolland | 10 | Significant | Fair | 1960 | Recreation |
| Lemanquais Pond Dam | Connecticut | Litchfield | 10 | Significant | Fair | 1968 | Fish and Wildlife Pond |
| Holman Pond Dam | Connecticut | Tolland | 9 | Significant | Not Rated | — | Other |
| Abbotts Pond Dam | Connecticut | New Haven | 9 | Significant | Not Rated | — | Recreation |
| Bishop Swamp Dam | Connecticut | Tolland | 9 | Significant | Satisfactory | — | Recreation |
| Greenley Pond Dam | Connecticut | Fairfield | 9 | Significant | Not Rated | — | Recreation |
| Pewter Pond Dam | Connecticut | Litchfield | 9 | Significant | Poor | — | Recreation |
| Porter Pond Dam | Connecticut | Windham | 9 | Significant | Satisfactory | — | Recreation |
| Beachdale Pond Dam | Connecticut | New London | 9 | Significant | Satisfactory | — | Recreation |
| Dublin Hill Dam | Connecticut | Fairfield | 9 | Significant | Not Rated | — | Recreation |
| Folly Pond Dam | Connecticut | Hartford | 9 | Significant | Satisfactory | — | Recreation |
| Wyantenock Wildlife Marsh Dam #3 | Connecticut | Litchfield | 9 | Significant | Satisfactory | — | Fish and Wildlife Pond |
| Taylors Pond Dam | Connecticut | Fairfield | 9 | Significant | Poor | — | Recreation |
| Cigar Pond Dam | Connecticut | Tolland | 9 | Significant | Not Rated | — | Recreation |
| Oneco Pond Dam | Connecticut | Windham | 9 | Significant | Not Rated | 1900 | Recreation |
| Kleeman Dam | Connecticut | New Haven | 9 | Significant | Not Rated | — | Other |
| Hartford Reservoir #5 Dike | Connecticut | Hartford | 9 | High | Fair | — | Water Supply |
| Ehrsam Pond Dam | Connecticut | Fairfield | 9 | Significant | Not Rated | — | Recreation |
| Grannis Pond Dam | Connecticut | Hartford | 9 | Significant | Satisfactory | — | Recreation |
| Lake Bonair Dam | Connecticut | Tolland | 9 | Significant | Not Rated | 1900 | Recreation |
| Spring Lake Dam | Connecticut | New Haven | 9 | Significant | Not Rated | — | Recreation |
| Holbrook Pond Dam | Connecticut | Tolland | 9 | Significant | Satisfactory | 1920 | Recreation |
| Tetreault Pond | Connecticut | Windham | 9 | Significant | Not Rated | 1900 | Recreation |
| Bradley Pond Dam | Connecticut | Hartford | 9 | Significant | Not Rated | — | Recreation |
| Blind Pond Dam | Connecticut | Fairfield | 9 | Significant | Satisfactory | — | Recreation |
| Great Pond Dam | Connecticut | Hartford | 9 | Low | Not Rated | 1930 | Fish and Wildlife Pond |
| Ridge Lower Detention Dam | Connecticut | New Haven | 9 | Significant | Satisfactory | — | Other |
| Wards Mill Pond Dam | Connecticut | New Haven | 9 | Significant | Not Rated | 1900 | Recreation |
| Hart Pond Dam | Connecticut | Litchfield | 9 | Significant | Poor | — | Recreation |
| Pistapaug Reservoir Dam | Connecticut | New Haven | 9 | High | Satisfactory | 1941 | Water Supply |
| Turnpike Pond Dam | Connecticut | Middlesex | 9 | Significant | Fair | 1900 | Recreation |
| Beckwith Pond Dam | Connecticut | New London | 9 | Significant | Satisfactory | — | Recreation |
| Bibbins Pond Dam | Connecticut | Windham | 9 | Significant | Satisfactory | 1880 | Recreation |
| Mashapaug Pond Dam #3 North | Connecticut | Tolland | 9 | Significant | Satisfactory | 1900 | Recreation |
| Lake Marie Dam | Connecticut | Windham | 9 | Significant | Satisfactory | 1880 | Recreation |
| Shunock River Dam | Connecticut | New London | 9 | Significant | Not Rated | — | Other |
| Minor Pond Dam | Connecticut | Litchfield | 9 | Significant | Not Rated | — | Recreation |
| Masterbone Pond Dam | Connecticut | Litchfield | 9 | Significant | Fair | — | Recreation |
| Dunham Pond Dam | Connecticut | Litchfield | 9 | Significant | Not Rated | — | Recreation |
| Norton Pond Dam | Connecticut | Hartford | 9 | Significant | Not Rated | — | Recreation |
| Pritchard Pond Dam | Connecticut | New Haven | 9 | Significant | Not Rated | 1890 | Recreation |
| Indian Hollow Pond Dam | Connecticut | Windham | 9 | Low | Not Rated | 1900 | Recreation |
| Bird Pond Dam | Connecticut | Litchfield | 9 | Significant | Fair | — | Recreation |
| Hanks Hill Pond Dam | Connecticut | Tolland | 9 | Significant | Fair | — | Recreation |
| Center Springs Pond Dam | Connecticut | Hartford | 9 | Significant | Not Rated | — | Recreation |
| Red Cedar Lake Dam | Connecticut | New London | 9 | Significant | Fair | 1900 | 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.