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Browse Dams

665 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 665 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
Rollins Pond Dam New Hampshire Belknap 17 Low Poor 1800 Recreation
Pioneer Lake Dam New Hampshire Cheshire 17 Low Not Rated 1971 Recreation
Melvin River Dam New Hampshire Carroll 17 Significant Poor 1930 Recreation
Sunset Lake Dam New Hampshire Belknap 17 High Poor 1860 Recreation
Briar Pipe New Hampshire Merrimack 17 Low Satisfactory 1936 Hydroelectric
Lake Kanasatka Dam New Hampshire Carroll 17 Significant Poor 1928 Recreation
Pea Porridge Pond Middle Little Dam New Hampshire Carroll 17 Significant Fair 1966 Recreation
Conway Lake Dam New Hampshire Carroll 17 Significant Fair 1763 Recreation
Somersworth New Hampshire Strafford 17 Significant Satisfactory 1929 Hydroelectric
Sargent Lake Dam New Hampshire Belknap 17 High Poor 1870 Recreation
Squam Lake New Hampshire Grafton 17 High Satisfactory 1856 Hydroelectric
Chase Pond Dam New Hampshire Merrimack 17 Significant Satisfactory 1915 Recreation
Island Pond Dam New Hampshire Cheshire 17 Low Poor 1920 Recreation
Glen Road New Hampshire Grafton 17 Significant Satisfactory 1988 Hydroelectric
Corcoran Pond Dam New Hampshire Grafton 17 High Satisfactory 1976 Recreation
Salmon Brook I Dam New Hampshire Hillsborough 17 Low Not Rated 1887 Recreation
Upper Wilson Pond Dam New Hampshire Cheshire 17 High Poor 1910 Recreation
Shelburne New Hampshire Coos 17 Low Satisfactory 1906 Hydroelectric
Souhegan Site 8 Cemetery Dike New Hampshire Hillsborough 16 Low Satisfactory 1977 Flood Risk Reduction
Sanborn Pond Grist Mill Dam New Hampshire Merrimack 16 High Fair 1830 Other
Wildlife Pond Dam New Hampshire Sullivan 16 Undetermined Not Rated 1955 Fish and Wildlife Pond
Wildsong Farm Pond Dam 1 New Hampshire Belknap 16 Low Fair 1969 Fish and Wildlife Pond
Harrisville Pond Dam New Hampshire Cheshire 16 High Fair 1886 Recreation
Gonic Dam New Hampshire Strafford 16 Significant Fair 1935 Recreation
Nubanusit Lake Dam New Hampshire Cheshire 16 Significant Poor 1861 Recreation
Crystal Lake Dam New Hampshire Belknap 16 High Poor 1958 Recreation
Hidden Pond Dam New Hampshire Cheshire 16 Low Fair 1966 Recreation
Woodbury Estate Pond Dam New Hampshire Hillsborough 16 Significant Satisfactory 1935 Recreation
Stratford Bog Pond Dam New Hampshire Coos 16 High Poor 1934 Recreation
Thornwood Commons Pond Dam New Hampshire Strafford 16 Significant Satisfactory 1961 Fish and Wildlife Pond
Copps Pond Dam New Hampshire Carroll 16 High Satisfactory 1940 Recreation
Stone Pond Dam New Hampshire Cheshire 16 Low Poor 1922 Recreation
Mine Falls New Hampshire Hillsborough 16 Low Satisfactory 1889 Hydroelectric
Belleau Lake Dam New Hampshire Carroll 16 Significant Poor 1962 Recreation
Grist Mill Pond Dam New Hampshire Grafton 16 High Poor 1924 Hydroelectric
Ashuelot River Dam New Hampshire Cheshire 16 Low Not Rated 1919 Recreation
Mill Pond Dam New Hampshire Cheshire 16 Significant Fair 1937 Recreation
Ayers Pond Dam New Hampshire Hillsborough 16 Low Fair 1865 Recreation
Lebanon Water Treatment Intake Dam New Hampshire Grafton 16 Significant Satisfactory 1934 Water Supply
Lower Ipc Dam New Hampshire Grafton 16 Significant Fair 1930 Recreation
Foote Pond Dam New Hampshire Belknap 16 Low Poor 1971 Recreation
Goldfish Pond Dam New Hampshire Merrimack 16 Low Fair 1974 Recreation
Troy Sewage Lagoons Dam New Hampshire Cheshire 16 Significant Satisfactory 1983 Other
Suncook Lake Dam New Hampshire Belknap 16 High Poor 1882 Recreation
Alton Power Dam New Hampshire Belknap 16 High Poor 1923 Recreation
Barnstead Parade Dam New Hampshire Belknap 16 High Poor 1830 Recreation
Beards Creek Dam New Hampshire Strafford 16 Significant Satisfactory 1953 Recreation
Stump Pond Dam New Hampshire Hillsborough 16 Low Fair 1938 Recreation
Chesham Pond Dam New Hampshire Cheshire 16 High Satisfactory 1921 Recreation
Webster Valve CO Dam New Hampshire Merrimack 15 Significant Poor 1901 Other

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.