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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
Hatch Pond Dam Connecticut Litchfield 31 Significant Poor 1900 Recreation
Mianus Filter Plant Dam Connecticut Fairfield 31 High Fair 1875 Water Supply
South Flood Control Dam Connecticut Hartford 31 High Satisfactory 1964 Flood Risk Reduction
Seymour Reservoir #2 Dam Connecticut New Haven 31 Significant Fair 1948 Water Supply
City Pond Dam Connecticut New London 31 Significant Poor — Recreation
Talcott Flood Control Dam #1 Connecticut Hartford 30 High Satisfactory 1964 Flood Risk Reduction
Clarks Pond Dam Connecticut New Haven 30 Significant Satisfactory — Recreation
Old Marsh Pond Dam Connecticut Litchfield 30 High Satisfactory 1913 Water Supply
Baltic Reservoir Dam (West) Connecticut New London 30 Significant Satisfactory 1900 Water Supply
Taftville Reservoir #1 Dam Connecticut New London 30 Significant Fair 1880 Recreation
Fairview Reservoir Dam and Dikes Connecticut New London 30 High Satisfactory 1868 Water Supply
Buckingham Reservoir Dam Connecticut Hartford 30 Significant Fair 1925 Recreation
Asylum Reservoir #4 Dam Connecticut Middlesex 30 Significant Satisfactory — Water Supply
Upper Kohanza Lake Dam Connecticut Fairfield 30 High Satisfactory 1866 Water Supply
Ledyard Reservoir Dam Connecticut New London 30 Significant Satisfactory 1954 Water Supply
Paper Goods Pond Dam Connecticut Hartford 30 Significant Fair 1920 Recreation
Mount Higby Reservoir Dam Connecticut Middlesex 30 High Satisfactory 1897 Water Supply
Staffordville Reservoir Dam Connecticut Tolland 30 High Satisfactory 1850 Recreation
Tantaquidgeon Connecticut New London 30 Low Satisfactory — Recreation
Lake Harwinton Dam Connecticut Litchfield 30 High Satisfactory 1930 Recreation
Converse Lake Dam Connecticut Fairfield 30 High Fair 1900 Recreation
Taftville Reservoir #2 Dam Connecticut New London 30 Significant Poor 1910 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
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
New Britain Reservoir Dike Connecticut Hartford 29 High Satisfactory 1904 Water Supply
Chestnut Ridge Dam Connecticut Fairfield 29 High Fair 1910 Water Supply
Maltby Lake West Dam #3 Connecticut New Haven 29 Significant Satisfactory 1862 Water Supply
Laurel Lake Dam Connecticut Litchfield 29 Significant Satisfactory 1965 Recreation
Farm Brook Flood Control Site #2a Dam Connecticut New Haven 29 High Satisfactory — Flood Risk Reduction
Lake Phipps Dam #1 Connecticut New Haven 29 High Satisfactory 1880 Recreation
Bradway Reservoir Site #4 Dam Connecticut Tolland 29 Significant Satisfactory 1961 Flood Risk Reduction
Samp Mortar Reservoir Dam Connecticut Fairfield 29 High Satisfactory 1901 Recreation
Robertsville Dam Connecticut Litchfield 29 Significant Satisfactory 1887 Hydroelectric
Margerie Lake Reservoir South Dam Connecticut Fairfield 29 High Satisfactory 1933 Water Supply
Bloomfield Flood Control Site #3 Dam Connecticut Hartford 29 High Satisfactory 1962 Flood Risk Reduction
Willimantic Reservoir Dam Connecticut Windham 29 High Satisfactory 1885 Water Supply
Farm Brook Pond Site 2b Connecticut New Haven 28 High Satisfactory — Fish and Wildlife Pond
Stafford Reservoir #2 Dam Connecticut Tolland 28 Significant Satisfactory 1966 Water Supply
Asylum Reservoir Dam #6 Connecticut Middlesex 28 Significant Fair 1954 Water Supply
Pinewood Lake Dam Connecticut Fairfield 28 High Satisfactory 1890 Recreation
Columbia Lake Dam Connecticut Tolland 28 High Satisfactory 1865 Recreation
Deep Hollow Reservoir Dam Connecticut Middlesex 28 Significant Satisfactory 1854 Water Supply
Adder Reservoir Connecticut Middlesex 28 High Fair 1934 Water Supply
Lake Forest Dam Connecticut Fairfield 28 High Satisfactory 1899 Recreation
Seymour Reservoir #4 Dam Connecticut New Haven 28 Significant Poor 1951 Water Supply
Swan Lake Dam Connecticut New Haven 28 High Fair 1920 Irrigation
Paper Mill Pond Dam Connecticut New London 28 Significant Poor 1870 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.