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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
Ashland Sewage Lagoon Dam New Hampshire Grafton 15 Significant Fair 1968 Other
Pickpocket Dam New Hampshire Rockingham 15 High Poor 1920 Recreation
Uncanoonuc Lake Dike New Hampshire Hillsborough 15 High Fair 1954 Recreation
Eel Pond Dam New Hampshire Rockingham 15 Low Satisfactory — Fish and Wildlife Pond
Kilburn Pond Dam New Hampshire Cheshire 15 Low Satisfactory 1935 Recreation
Farmington Levee New Hampshire Strafford 15 High Fair 1956 Flood Risk Reduction
Lyford Pond Dam New Hampshire Merrimack 15 Significant Poor 1840 Recreation
Resort Waste Water Lagoon Dam New Hampshire Coos 15 Significant Satisfactory 1987 Other
Wendall Marsh Dam New Hampshire Sullivan 15 Significant Fair — Recreation
Deep Hole Pond Dam New Hampshire Rockingham 15 Low Fair 1974 Recreation
Colebrook Sewage Lagoon Dam New Hampshire Coos 15 Significant Satisfactory 1975 Other
Flagpole Pond Dike New Hampshire Merrimack 15 Low Fair 1967 Recreation
Village Pond Dam New Hampshire Cheshire 15 Significant Poor 1919 Recreation
Turkey Pond Dam New Hampshire Merrimack 15 High Satisfactory 1958 Recreation
Crotched Mtn Storage Lagoon Dam New Hampshire Hillsborough 15 Significant Satisfactory 1989 Other
Runaway Pond East Dam New Hampshire Merrimack 15 Significant Poor 1814 Recreation
Contoocook River Dam New Hampshire Cheshire 15 Significant Fair 1861 Recreation
Gulch Mountain Pond Dam New Hampshire Rockingham 15 Significant Poor 1965 Recreation
Phillips Pond Dam New Hampshire Coos 15 Low Not Rated 1926 Recreation
Perkins Pond Marsh Dam New Hampshire Hillsborough 15 Low Satisfactory 1924 Recreation
Exeter Reservoir Dam New Hampshire Rockingham 15 High Poor 1886 Water Supply
Rowe Dam New Hampshire Strafford 15 Low Satisfactory 1935 Recreation
Great East Lake Dam New Hampshire Carroll 15 High Poor 1825 Recreation
Downing Pond Dam New Hampshire Strafford 15 Low Fair 1921 Recreation
Deer Meadow Pond Dam New Hampshire Merrimack 15 Low Fair 1938 Recreation
Gordon Hill Water Supply Dam New Hampshire Belknap 15 Significant Satisfactory 1934 Water Supply
Sawmill New Hampshire Coos 15 Low Satisfactory 1965 Hydroelectric
Pemigewasset River Levee New Hampshire Grafton 15 High Satisfactory 1960 Flood Risk Reduction
Exeter River Dam New Hampshire Rockingham 15 Significant Poor 1927 Recreation
Pequawket Pond Dam New Hampshire Carroll 15 Low Fair — Recreation
Crescent Lake Dam New Hampshire Carroll 15 High Satisfactory 1854 Recreation
Webster Valve CO Dam New Hampshire Merrimack 15 Significant Poor 1901 Other
Whites Pond Dam and Dike New Hampshire Merrimack 15 High Satisfactory 1890 Recreation
Loon Lake Dam New Hampshire Sullivan 15 High Poor 1920 Recreation
Frog Pond Dam New Hampshire Hillsborough 15 Significant Not Rated 1916 Recreation
Sportsman Pond Dam New Hampshire Cheshire 15 Low Satisfactory 1910 Recreation
Lcs Settling Ponds 4 and 5 Dam New Hampshire Grafton 15 Low Not Rated 1980 Other
Lake Waukewan Dam New Hampshire Belknap 15 High Poor 1880 Recreation
Merrimack River Right Bank Fdr New Hampshire Hillsborough 15 High Fair 1949 Flood Risk Reduction
Union Street New Hampshire Hillsborough 15 Significant Satisfactory 1916 Hydroelectric
Ws Packaging Canal Dam New Hampshire Hillsborough 15 High Satisfactory 1876 Recreation
South Milton New Hampshire Strafford 15 Low Satisfactory 1893 Hydroelectric
Penacook Lower Falls Diversion New Hampshire Merrimack 15 Low Satisfactory 1982 Hydroelectric
Pontook New Hampshire Coos 15 Low Satisfactory 1909 Hydroelectric
Allied Leather Auxiliary New Hampshire Merrimack 15 Low Satisfactory 1982 Hydroelectric
Sunapee New Hampshire Sullivan 15 Significant Satisfactory 1856 Hydroelectric
Allied Leather Forebay New Hampshire Merrimack 15 Low Satisfactory 1982 Hydroelectric
Meadow Lake Dam New Hampshire Rockingham 14 Low Poor 1975 Recreation
Burton Pond Dam New Hampshire Hillsborough 14 Low Fair 1837 Recreation
Poole Reservoir Dam New Hampshire Cheshire 14 Significant Poor 1926 Recreation

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.