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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
Popes Pond Dam Connecticut Fairfield 24 High Satisfactory 1965 Water Supply
Isinglass Reservoir Dam Connecticut Fairfield 24 Significant Fair — Water Supply
Werner Woods Pond Dam Connecticut Hartford 24 Significant Satisfactory 1963 Recreation
Grupes Reservoir Dam Connecticut Fairfield 24 High Poor 1871 Water Supply
Cargill Falls Connecticut Windham 24 Significant Satisfactory 1925 Hydroelectric
Bashan Lake Dam Connecticut Middlesex 24 Significant Satisfactory 1939 Recreation
Candee Reservoir Dam Connecticut New Haven 24 Significant Satisfactory — Water Supply
Lake Winnemaug Dam Connecticut Litchfield 24 High Satisfactory 1920 Recreation
Quassapaug Lake Dam Connecticut New Haven 24 Significant Fair 1900 Recreation
West River Pond Dam Connecticut New Haven 24 Significant Fair — Recreation
Brush Reservoir Dam Connecticut Fairfield 23 Low Poor 1925 Water Supply
Ashford Lake Dam Connecticut Windham 23 Significant Satisfactory 1949 Recreation
Messerschmidt Pond Dam Connecticut Middlesex 23 High Fair 1890 Recreation
Winchester Lake Dam Connecticut Litchfield 23 Significant Satisfactory — Recreation
Lake Konomoc Dam Connecticut New London 23 High Fair 1872 Water Supply
Irving Pond Dam Connecticut Litchfield 23 Significant Fair 1945 Recreation
Hart Brook Pond Dam Connecticut Litchfield 23 Significant Fair 1908 Water Supply
Wintonbury Flood Control Site #1 Dam Connecticut Hartford 23 High Satisfactory 1963 Flood Risk Reduction
Pattaconk Reservoir Dam Connecticut Middlesex 23 High Fair 1932 Recreation
Upper Unionville Reservoir Dam Connecticut Hartford 23 Significant Fair 1909 Recreation
Pin Shop Pond Dam Connecticut Litchfield 23 High Fair 1870 Other
Gager'S Pond Dam Connecticut New London 22 Significant Poor 1876 Recreation
Barnes Reservoir Dam Connecticut New London 22 Significant Poor 1902 Water Supply
Wood Creek Pond Dam Connecticut Litchfield 22 Significant Satisfactory 1900 Recreation
Tadma Pond Dam Connecticut New London 22 Significant Poor 1966 Recreation
Jennings Pond Dam Connecticut Middlesex 22 High Satisfactory 1870 Recreation
Dodson Pond Dam Connecticut New London 22 Significant Fair 1962 Recreation
Conrad Pond Dam Connecticut New Haven 22 High Satisfactory — Recreation
Drop Pond Dam Connecticut Middlesex 22 Significant Satisfactory — Recreation
Nash Pond Dam Connecticut Fairfield 22 High Satisfactory 1879 Recreation
Somersville Pond Dam Connecticut Tolland 22 Significant Satisfactory 1890 Recreation
Halls Pond Dam Connecticut Tolland 22 Significant Fair 1920 Recreation
Warren Pond Dam Connecticut Tolland 22 High Poor 1852 Recreation
Lakeville Reservoir #2 Dam Connecticut Litchfield 22 Significant Fair — Water Supply
Pine Meadows Park Pond Pond Dam Connecticut New London 22 Low Not Rated 1959 Recreation
Old Brass Mill Pond Dam Connecticut Litchfield 22 Significant Fair — Recreation
Lake Mauweehoo Dam Connecticut Fairfield 22 Significant Satisfactory 1906 Recreation
Waterbury Reservoir No. 2 Dam Connecticut New Haven 22 High Satisfactory 1880 Recreation
Goodwin Pond Dam Connecticut Litchfield 21 Significant Poor — Recreation
Wolcott Reservoir Conveyor Dam Connecticut Hartford 21 Significant Satisfactory — Water Supply
Valley Pond Dam Connecticut Litchfield 21 Significant Satisfactory 1900 Recreation
Wyre - Wynd Connecticut New London 21 Low Satisfactory 1913 Hydroelectric
Lake Mark Dam Connecticut Tolland 21 Significant Fair 1957 Recreation
Zoar Pond Dam Connecticut Middlesex 21 Significant Poor — Recreation
Stanley Quarter Park Pond Dam Connecticut Hartford 21 Significant Satisfactory — Recreation
Cheshire Reservoir Dam Connecticut New Haven 21 High Satisfactory 1908 Water Supply
South Pond Dam Connecticut Litchfield 21 High Satisfactory 1850 Recreation
Arrigoni Pond Dam Connecticut Middlesex 21 Significant Satisfactory 1945 Recreation
Cobbs Mill Pond Dam Connecticut Fairfield 21 Significant Fair 1892 Recreation
Butternut Hollow Pond Dam Connecticut Middlesex 21 Significant Satisfactory 1935 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.