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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
Cobble Mountain Reservoir Dam Massachusetts Hampden 245 High Satisfactory 1930 Water Supply
Quabbin Winsor Dam Massachusetts Hampshire 170 High Satisfactory 1939 Water Supply
Littleville Dam Massachusetts Hampden 164 High Not Available 1965 Flood Risk Reduction
Bear Swamp - North Dike Massachusetts Franklin 155 Low Satisfactory 1974 Hydroelectric
Knightville Dam Massachusetts Hampshire 150 High Not Available 1941 Flood Risk Reduction
Northfield Mt. - Main Dam Massachusetts Franklin 145 High Satisfactory 1973 Hydroelectric
Bear Swamp - South Dike Massachusetts Franklin 140 High Satisfactory 1974 Hydroelectric
Quabbin Goodnough Dike Massachusetts Hampshire 135 High Satisfactory 1938 Water Supply
Fife Brook Massachusetts Franklin 130 High Satisfactory 1974 Hydroelectric
Tighe Carmody Reservoir Dam Massachusetts Hampshire 130 High Satisfactory 1955 Water Supply
Wachusett Reservoir Dam Massachusetts Worcester 114 High Satisfactory 1906 Water Supply
Sherman Massachusetts Franklin 110 High Satisfactory 1927 Hydroelectric
Farnham Reservoir Dam Massachusetts Berkshire 105 High Fair 1910 Water Supply
Clam Lake Dam Massachusetts Berkshire 97 High Fair 1977 Flood Risk Reduction
Granville Reservoir Dam Massachusetts Hampden 85 High Satisfactory 1930 Water Supply
Conant Brook Dam Massachusetts Hampden 85 High Not Available 1966 Flood Risk Reduction
Wachusett Reservoir North Dike Massachusetts Worcester 85 High Satisfactory 1904 Water Supply
Lovell Reservoir Dam Massachusetts Worcester 84 High Fair 1929 Water Supply
Francis P. Ryan Dam Massachusetts Franklin 80 High Fair 1970 Water Supply
Conway Electric Dam Massachusetts Franklin 77 Low Poor 1898 Recreation
Sudbury Reservoir Dam Massachusetts Worcester 77 High Satisfactory 1899 Water Supply
Borden Brook Reservoir Dam Massachusetts Hampden 77 High Satisfactory 1909 Water Supply
Upper Sackett Reservoir Dam Massachusetts Berkshire 76 High Satisfactory 1947 Water Supply
Deerfield No. 2 Massachusetts Franklin 76 Low Satisfactory 1913 Hydroelectric
North Silver Lake Dam Massachusetts Berkshire 76 High Fair — Flood Risk Reduction
Westville Dam Massachusetts Worcester 72 High Not Available 1962 Flood Risk Reduction
Moose Hill Reservoir Dam Massachusetts Worcester 71 High Satisfactory 1980 Flood Risk Reduction
Cleveland Brook Reservoir Dam Massachusetts Berkshire 71 High Satisfactory 1949 Water Supply
Pine Hill Reservoir Dam Massachusetts Worcester 70 High Fair 1924 Water Supply
Barre Falls Dam Massachusetts Worcester 69 High Not Available 1958 Flood Risk Reduction
Buffumville Dam Massachusetts Worcester 66 High Not Available 1958 Flood Risk Reduction
Gill Massachusetts Franklin 65 Low Satisfactory 1970 Hydroelectric
Conway Reservoir Dam Massachusetts Franklin 65 High Satisfactory 1975 Water Supply
Notch Reservoir Dam Massachusetts Berkshire 64 High Poor 1897 Water Supply
Schoolhouse Lake Dam Massachusetts Berkshire 63 High Satisfactory 1986 Flood Risk Reduction
Lynde Brook Reservoir Dam Massachusetts Worcester 61 High Satisfactory 1876 Water Supply
Black Brook Pl-566 Flood Control Dam Massachusetts Hampden 60 High Satisfactory 1971 Water Supply
Cohasse Brook Reservoir Dam Massachusetts Worcester 60 High Satisfactory 1967 Water Supply
Intake Dam Massachusetts Hampden 59 Low Fair 1909 Water Supply
Tully Dam Massachusetts Worcester 59 High Not Available 1949 Flood Risk Reduction
Ashland Reservoir Dam Massachusetts Middlesex 59 High Satisfactory 1900 Recreation
Upper Glen Reservoir Dam Massachusetts Franklin 59 Significant Satisfactory 1904 Water Supply
Hopkinton Reservoir Dam Massachusetts Middlesex 58 High Satisfactory 1891 Recreation
Arm Brook Pl-566 Flood Control Dam Massachusetts Hampden 58 High Satisfactory 1963 Flood Risk Reduction
Holden Reservoir Dam No. 2 Massachusetts Worcester 57 High Satisfactory 1900 Water Supply
Leahey (Upper) Reservoir Dam and Dike Massachusetts Berkshire 57 High Satisfactory 1965 Water Supply
Dykes Meadow Dam Massachusetts Essex 54 Significant Satisfactory 1894 Water Supply
Prospect Hill Reservoir Dam Massachusetts Bristol 54 Significant Satisfactory 1956 Water Supply
Hodges Village Dam Massachusetts Worcester 54 High Not Available 1959 Flood Risk Reduction
East Brimfield Dam Massachusetts Worcester 53 High Not Available 1960 Flood Risk Reduction

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.