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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.

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