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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.

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
Case Brothers Lower Pond Dam Connecticut Hartford 27 Significant Poor 1870 Recreation
Highland Lake Dam Connecticut Litchfield 27 High Fair 1860 Recreation
Hanover Reservoir Dam Connecticut New London 27 High Fair 1900 Recreation
Merimere Reservoir Dike (Dam Is 705) Connecticut New Haven 27 High Fair 1870 Water Supply
Shenipsit Lake Dam Connecticut Tolland 27 High Satisfactory 1903 Water Supply
Ymca Camp Farnam Pond Dam Connecticut Middlesex 26 Significant Fair 1931 Recreation
Dobsonville Pond Dam Connecticut Tolland 26 Significant Fair 1900 Recreation
Oxoboxo Lake Dam Connecticut New London 26 High Satisfactory 1810 Recreation
Williams Pond Dam Connecticut New London 26 Significant Satisfactory 1865 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
Halchek Pond Dam Connecticut Tolland 26 Significant Fair 1972 Recreation
Black Pond Dam Connecticut New Haven 26 High Fair 1880 Recreation
Seymour Reservoir #1 Dam Connecticut New Haven 26 Significant Fair 1898 Water Supply
Rugg Brook Reservoir Northeast Dike Connecticut Litchfield 26 Significant Satisfactory — Water Supply
Shadow Lake Dam Connecticut Fairfield 25 Significant Fair 1937 Recreation
Aldon Mill Pond Dam Connecticut Tolland 25 Significant Satisfactory 1920 Recreation
Avery Flood Control Site #2 Dam Connecticut Hartford 25 High Satisfactory 1993 Flood Risk Reduction
Ashland Pond Dam Connecticut New London 25 High Satisfactory 1800 Recreation
North Grosvenordale Dam Connecticut Windham 25 High Poor 1900 Recreation
Bristol Reservoir #1 Dam Connecticut Hartford 25 High Satisfactory 1885 Water Supply
Ville Pond Dam Connecticut Fairfield 25 Significant Satisfactory — Recreation
Lake Housatonic Connecticut New Haven 25 High Satisfactory 1870 Hydroelectric
Hanover Pond Connecticut New Haven 25 High Satisfactory 2006 Hydroelectric
Johnson Millpond Dam Connecticut Middlesex 25 Significant Satisfactory 1880 Recreation
Batterson Park Pond Dam Connecticut Hartford 25 High Satisfactory 1878 Recreation
Leesville Dam Connecticut Middlesex 25 High Satisfactory 1900 Recreation
Shelton Canal Dike Connecticut Fairfield 25 Low Satisfactory 1870 Hydroelectric
Kensington Dam Connecticut Hartford 25 High Satisfactory 1901 Recreation
Lower Kohanza Lake Dam Connecticut Fairfield 25 High Satisfactory 1860 Water Supply
Mansfield Recreation Pond Connecticut Tolland 25 Significant Satisfactory 1974 Recreation
Straitsville Reservoir Dam Connecticut New Haven 25 Significant Fair 1900 Water Supply
Stevens Mill Pond Dam Connecticut Hartford 25 Significant Not Rated 1954 Other
Blue Hills Flood Control Site #2 Dam Connecticut Hartford 25 High Fair 1964 Flood Risk Reduction
Powers Lake Dam Connecticut New London 25 Significant Poor 1870 Recreation
North Meadows Dike Connecticut Hartford 24 High Not Rated 1939 Flood Risk Reduction
Bulls Bridge Connecticut Litchfield 24 Low Satisfactory 1902 Hydroelectric
Cargill Falls Connecticut Windham 24 Significant Satisfactory 1925 Hydroelectric
Echo Lake Dam Connecticut Litchfield 24 High Satisfactory 1958 Recreation
Factory Pond Dam Connecticut Fairfield 24 High Poor 1874 Recreation
Drobney Dam Connecticut Tolland 24 Significant Satisfactory 1970 Recreation
Popes Pond Dam Connecticut Fairfield 24 High Satisfactory 1965 Water Supply
Candee Reservoir Dam Connecticut New Haven 24 Significant Satisfactory — Water Supply
Dooley Pond Dam Connecticut Middlesex 24 High Fair 1870 Recreation
Werner Woods Pond Dam Connecticut Hartford 24 Significant Satisfactory 1963 Recreation
West River Pond Dam Connecticut New Haven 24 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.