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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
Burnt Hill Flood Control Dam Connecticut Hartford 38 High Satisfactory 1966 Flood Risk Reduction
Kenmere Reservoir Dam Connecticut Hartford 38 High Satisfactory 1898 Water Supply
Ellis Flood Control Site #2 Dam Connecticut Tolland 38 High Satisfactory 1960 Flood Risk Reduction
Scotland Connecticut Windham 37 Low Satisfactory 1909 Hydroelectric
American Felt Dam Connecticut Fairfield 37 High Satisfactory 1867 Recreation
Hockanum Reservoir Dam Connecticut Tolland 37 High Fair 1890 Recreation
Maltby No. 1 Dam Connecticut New Haven 37 High Satisfactory 1862 Water Supply
Chestnut Hill Reservoir Dam Connecticut New Haven 37 High Fair 1919 Recreation
Rock Lake Dam Connecticut Fairfield 37 Significant Satisfactory 1875 Water Supply
South Norwalk Reservoir Dam Connecticut Fairfield 36 High Satisfactory 1899 Water Supply
Rugg Brook Reservoir Dam Connecticut Litchfield 36 Significant Fair 1890 Water Supply
Popps Mountain Dike Connecticut Fairfield 36 High Satisfactory 1941 Water Supply
Wood Creek Flood Control Dam Site #9 Connecticut Litchfield 36 High Satisfactory 1971 Flood Risk Reduction
Rockwood Lake Dam Connecticut Fairfield 36 High Satisfactory 1893 Water Supply
Crystal Lake Dam Connecticut Litchfield 36 Significant Fair 1878 Water Supply
Pomeroy Flood Control Site #3 Dam Connecticut Tolland 36 High Fair 1960 Flood Risk Reduction
Putnam Reservoir Dam Connecticut Fairfield 35 High Satisfactory 1910 Water Supply
Congdon Pond Dam Connecticut New London 35 Significant Poor 1900 Hydroelectric
Middle Reservoir Dam Connecticut New Haven 35 Significant Satisfactory 1890 Water Supply
Sandy Hook Connecticut Fairfield 35 Significant Satisfactory 1905 Hydroelectric
Stone Hill Reservoir Dam Connecticut New London 35 Significant Satisfactory 1894 Water Supply
Hancock Brook Dam Connecticut Litchfield 35 High Not Available 1966 Flood Risk Reduction
East Mountain Reservoir Dam Connecticut New Haven 35 High Satisfactory 1880 Recreation
Asylum Reservoir #2 Dam Connecticut Middlesex 35 Significant Fair — Water Supply
Woodridge Lake Dam Connecticut Litchfield 34 High Satisfactory 1970 Recreation
Mystic Reservoir Dam Connecticut New London 34 High Satisfactory 1880 Water Supply
Johnsons Pond Dam Connecticut Litchfield 34 Significant Not Rated — Recreation
Bronson E. Lockwood Dam Connecticut Litchfield 34 High Satisfactory 1958 Water Supply
Stillwater Pond Dam Connecticut Litchfield 34 High Satisfactory — Recreation
Lake Saltonstall Dam Connecticut New Haven 34 High Satisfactory 1882 Water Supply
Lake Beseck Dam Connecticut Middlesex 34 Significant Satisfactory 1846 Recreation
Collins Company Lower Dam Connecticut Hartford 33 Significant Satisfactory — Recreation
Bushy Hill Pond Dam Connecticut Middlesex 33 High Satisfactory 1871 Water Supply
Hop Brook Dam - Saddle Dike Connecticut New Haven 33 High Not Available 1968 Flood Risk Reduction
Union Pond Dam Connecticut Hartford 33 High Fair 1901 Recreation
Bristol Reservoir #2 Dam Connecticut Litchfield 33 Significant Satisfactory 1889 Water Supply
Canoe Brook Lake Dam Connecticut Fairfield 33 High Satisfactory 1870 Recreation
Bunnells Pond Dam Connecticut Fairfield 33 High Fair 1906 Recreation
Merimere Reservoir Dam (Dike Is 8030) Connecticut Hartford 33 Significant Satisfactory 1870 Water Supply
Green Falls Reservoir Dam Connecticut New London 32 Significant Satisfactory 1870 Recreation
Tunnel Dam Hydro Station Connecticut New London 32 Significant Satisfactory 1906 Hydroelectric
Hartford Reservoir #2 Dam Connecticut Hartford 32 High Satisfactory 1869 Water Supply
Porter Reservoir Dam Connecticut Hartford 32 Significant Satisfactory 1902 Water Supply
Trading Cove Pond Dam Connecticut New London 32 Significant Fair 1900 Recreation
Wigwam Reservoir South Dam Connecticut Litchfield 32 Significant Satisfactory 1893 Water Supply
Scoville Reservoir Dam Connecticut New Haven 32 High Satisfactory 1917 Recreation
Seymour Reservoir #2 Dam Connecticut New Haven 31 Significant Fair 1948 Water Supply
Lake Wintergreen Dam Connecticut New Haven 31 High Satisfactory 1863 Water Supply
Hatch Pond Dam Connecticut Litchfield 31 Significant Poor 1900 Recreation
Mianus Filter Plant Dam Connecticut Fairfield 31 High Fair 1875 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.