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Browse Dams

1,340 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 1,340 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
Williamstown Reservoir Dam Massachusetts Berkshire 32 High Satisfactory 1898 Water Supply
Mountain Lake Dam Massachusetts Hampden 32 High Satisfactory 1923 Flood Risk Reduction
Deerfield No. 5 Massachusetts Franklin 32 Low Satisfactory 1992 Hydroelectric
Cooks Dam Massachusetts Hampshire 32 Significant Fair — Recreation
Stiles Lake Dam Massachusetts Worcester 32 High Satisfactory 1865 Recreation
Thousand Acre Lake Dam Massachusetts Berkshire 32 High Fair 1960 Flood Risk Reduction
Simonds Pond Dam Massachusetts Worcester 32 Significant Satisfactory — Water Supply
Otis Reservoir Dam Massachusetts Berkshire 32 High Satisfactory 1888 Recreation
Muddy Cove Pond Dam Massachusetts Bristol 32 High Fair 1950
Horse Shoe Regulating Dam Massachusetts Franklin 32 Low — 1938 Water Supply
Smith Pond Dam Massachusetts Berkshire 32 Significant Satisfactory 1961 Recreation
Carpenter Reservoir Dam Massachusetts Worcester 32 Significant Satisfactory 1888 Water Supply
Stony Brook Reservoir Dam Massachusetts Middlesex 32 High Satisfactory 1887 Water Supply
East Branch Swift Regulating Dam Massachusetts Worcester 32 Low Fair — Water Supply
Reservoir No. 5 Dam Massachusetts Worcester 31 Low Satisfactory 1900 Water Supply
Pecks Lower Pond Dam Massachusetts Berkshire 31 Significant Poor 1877
Westminster Reservoir Dam Massachusetts Worcester 31 High Fair 1909 Other
Factory Hollow Dam Massachusetts Hampshire 31 High Fair 1895 Recreation
Cambridge Reservoir Dam Massachusetts Middlesex 31 High Satisfactory 1897 Water Supply
Chartpak Dam Massachusetts Hampshire 31 Significant Satisfactory —
Upper Van Horn Reservoir Dam Massachusetts Hampden 31 Significant Poor 1848 Recreation
South Silver Dam Massachusetts Berkshire 31 High Satisfactory 1967 Flood Risk Reduction
Hodges Village Dam - Dike 1 Massachusetts Worcester 30 High Not Available 1959 Flood Risk Reduction
Holyoke - Overflow No. 1 Massachusetts Hampden 30 High Satisfactory 1850 Hydroelectric
Indian Hill Reservoir Dam and Dikes Massachusetts Essex 30 Low Fair 1981 Water Supply
Breeds Pond Lantern Rock Dike No. 4 Massachusetts Essex 30 High Fair 1914 Water Supply
Russell Massachusetts Hampden 30 Low Satisfactory 1905 Hydroelectric
Mountain Street Reservoir Dikes Massachusetts Hampshire 30 Low Poor 1905 Water Supply
Holyoke - Overflow No. 2 Massachusetts Hampden 30 High Satisfactory 1860 Hydroelectric
Holyoke Dam Massachusetts Hampshire 30 High Satisfactory 1900 Hydroelectric
Hodges Village Dam - Dikes 2, 3 and 4 Massachusetts Worcester 30 High Not Available 1959 Flood Risk Reduction
Newton Reservoir Dam Massachusetts Worcester 30 Low Fair 1903 Recreation
Reservoir No. 4 Dam Massachusetts Worcester 30 Significant Satisfactory 1965 Water Supply
Provin Mountain Reservoir Dam Massachusetts Hampden 30 High Satisfactory 1910 Water Supply
West Parish Filter No. 2 Dam Massachusetts Hampden 30 Significant Poor 1910 Water Supply
Northfield Mt. - West Dike Massachusetts Franklin 30 High Satisfactory 1973 Hydroelectric
South Deerfield Water Supply Dam Massachusetts Franklin 30 Significant Fair — Water Supply
Stevens Paper Company Lower Dam Massachusetts Hampden 30 Low Poor 1957
Stevens Pond Dam Massachusetts Worcester 30 High Poor 1864 Recreation
Glen Echo Lake Dam Massachusetts Worcester 30 High Satisfactory 1956 Recreation
Indian Orchard Massachusetts Hampden 30 High Satisfactory 1846 Hydroelectric
Glendale Massachusetts Berkshire 30 Low Satisfactory 1906 Hydroelectric
Framingham Reservoir No. 3 Dam Massachusetts Middlesex 29 High Satisfactory 1880 Water Supply
Lower Highland Lake Dam Massachusetts Hampshire 29 High Satisfactory 1852 Recreation
Bassett Brook Reservoir Dam Massachusetts Berkshire 29 Significant Fair 1967 Water Supply
Leaping Well Reservoir Dam Massachusetts Hampshire 29 High Satisfactory 1890 Recreation
Eddy Pond Dam Massachusetts Worcester 29 High Fair 1920 Recreation
Deerfield No. 5 - Dunbar Massachusetts Berkshire 29 Low Satisfactory 1993 Hydroelectric
Belmont Reservoir Dam Massachusetts Berkshire 29 High Fair 1889 Water Supply
Aaron River Dam Massachusetts Norfolk 29 High Satisfactory 1978 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.