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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
Mwh Sewage Lagoons Dam New Hampshire Coos 19 Significant Fair 2000 Other
Sunrise Lake Dam New Hampshire Strafford 19 High Satisfactory 1877 Recreation
Wong Wildlife Pond Dam New Hampshire Belknap 19 Low Poor 1976 Fish and Wildlife Pond
Milton Three Ponds Dam New Hampshire Strafford 19 High Poor 1824 Recreation
Baxter Lake Main Dam New Hampshire Strafford 19 Significant Fair 1923 Recreation
Taylor River Pond Dam New Hampshire Rockingham 19 High Satisfactory 1949 Fish and Wildlife Pond
Newfields Sewage Lagoon Dam New Hampshire Rockingham 19 Significant Satisfactory 1982 Other
Bradley Lake Dam New Hampshire Merrimack 19 Significant Satisfactory 1952 Recreation
Cold Brook Pond Dam New Hampshire Sullivan 19 Significant Satisfactory 1956 Recreation
Lincoln Sewage Lagoon Dam New Hampshire Grafton 19 Significant Satisfactory 1975 Other
Brooklyn New Hampshire Coos 19 Significant Unsatisfactory 1919 Hydroelectric
Larrys Pond Dam New Hampshire Cheshire 19 Low Not Rated 1970 Recreation
Eastman Treatment Lagoons Dam New Hampshire Sullivan 18 Significant Not Rated — Flood Risk Reduction
Blackwater Dam - Dodge Estate Dike New Hampshire Merrimack 18 High Not Available 1941 Flood Risk Reduction
Pittsfield Sewage Lagoon Dam New Hampshire Merrimack 18 Significant Satisfactory 1979 Other
Wason Pond Dam New Hampshire Rockingham 18 Low Satisfactory 1931 Recreation
Mud Pond Dam New Hampshire Cheshire 18 Low Fair 1899 Recreation
Mascoma Lake Dam New Hampshire Grafton 18 High Poor 1881 Recreation
Lower Robertson New Hampshire Cheshire 18 Low Satisfactory 1905 Hydroelectric
Fullam Pond Dam New Hampshire Cheshire 18 Low Not Rated — Recreation
Giles Pond New Hampshire Merrimack 18 Low Satisfactory 1904 Hydroelectric
South Berwick New Hampshire Strafford 18 Low Satisfactory 1923 Hydroelectric
Dodge Falls New Hampshire Grafton 18 Low Satisfactory 1905 Hydroelectric
Mountain Brook Reservoir Dam New Hampshire Cheshire 18 Significant Fair 1951 Recreation
Sugar River I New Hampshire Sullivan 18 Significant Satisfactory 1928 Hydroelectric
Robinhood Park Reservoir Dam New Hampshire Cheshire 18 High Satisfactory 1872 Recreation
Lower Wilson Pond Dam New Hampshire Cheshire 18 Significant Satisfactory 1925 Recreation
Garvins Falls New Hampshire Merrimack 18 Low Satisfactory 1901 Hydroelectric
Ashuelot Paper Mill Dam New Hampshire Cheshire 18 Low Not Rated 1910 Hydroelectric
Berry Pond Dam New Hampshire Merrimack 18 High Satisfactory 1884 Water Supply
Hopkinton Sewage Lagoon Dam New Hampshire Merrimack 18 Significant Satisfactory 1983 Other
Icy Gulch Reservoir Dam New Hampshire Coos 18 Significant Satisfactory 1940 Water Supply
Cheshire Mills Lower Dam New Hampshire Cheshire 18 High Poor 1848 Hydroelectric
Mcgary Fletcher Rec Pond Dam New Hampshire Sullivan 18 Significant Satisfactory 1978 Recreation
Waterloom Falls New Hampshire Hillsborough 18 Low Satisfactory 1980 Hydroelectric
Godfrey Dam New Hampshire Coos 18 Significant Satisfactory 1920 Water Supply
Wildsong Farm Pond Dike New Hampshire Belknap 18 Low Fair 1969 Recreation
Little Bog Pond Dam New Hampshire Coos 18 Low Not Rated 1930 Recreation
Lower Lisbon New Hampshire Grafton 18 Low Satisfactory 1986 Hydroelectric
Bog Brook Pond Dam New Hampshire Sullivan 18 Low Satisfactory 1957 Recreation
Ayers Pond Dam New Hampshire Strafford 18 Significant Fair 1810 Recreation
Pawtuckaway Lake /Drowns Dam New Hampshire Rockingham 18 Significant Poor 1842 Recreation
Todd Lake Dam New Hampshire Merrimack 17 Significant Poor 1858 Recreation
Waumbek Dam New Hampshire Strafford 17 Low Satisfactory 1880 Recreation
Durham Reservoir Dam New Hampshire Strafford 17 High Satisfactory 1930 Recreation
Mill Pond Road Dam New Hampshire Cheshire 17 Undetermined Not Rated 1979 Recreation
Childs Bog Dam New Hampshire Cheshire 17 High Satisfactory 1924 Recreation
Ammonoosuc River New Hampshire Grafton 17 Low Satisfactory 1900 Hydroelectric
Bog Pond Dam New Hampshire Merrimack 17 Significant Satisfactory 1870 Recreation
Squam Lake New Hampshire Grafton 17 High Satisfactory 1856 Hydroelectric

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.