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 |
|---|---|---|---|---|---|---|---|
| Supply Pond Dam | New Hampshire | Hillsborough | 28 | High | Fair | 1854 | Water Supply |
| High View Wildlife Pond Dam | New Hampshire | Sullivan | 27 | Low | Poor | 1968 | Recreation |
| Otis Falls | New Hampshire | Hillsborough | 27 | Significant | Satisfactory | 1982 | Hydroelectric |
| Locke 1 Dam | New Hampshire | Grafton | 27 | Low | Poor | 1970 | Recreation |
| Hoods Pond Dam | New Hampshire | Rockingham | 27 | High | Satisfactory | 1945 | Recreation |
| Manchester Airport Det Pond Dam | New Hampshire | Rockingham | 27 | Low | Satisfactory | 1992 | Flood Risk Reduction |
| Cheshire Mills | New Hampshire | Cheshire | 27 | Significant | Satisfactory | 1886 | Hydroelectric |
| Montcalm Golf Club Dam | New Hampshire | Grafton | 27 | Low | Fair | 1984 | Recreation |
| Macallen Dam | New Hampshire | Rockingham | 27 | High | Satisfactory | 1887 | Recreation |
| Clement Dam | New Hampshire | Belknap | 26 | Significant | Not Rated | 1901 | Hydroelectric |
| Rochester Reservoir Dam | New Hampshire | Strafford | 26 | High | Satisfactory | 1935 | Water Supply |
| Pembroke | New Hampshire | Merrimack | 26 | Low | Satisfactory | 1891 | Hydroelectric |
| Campus Drive Dam | New Hampshire | Merrimack | 26 | Significant | Fair | 2006 | Flood Risk Reduction |
| Country Club Pond Dam | New Hampshire | Rockingham | 25 | Low | Satisfactory | 1996 | Recreation |
| Groveton Paper Mill Lagoons Dam | New Hampshire | Coos | 25 | Significant | Fair | 2010 | Other |
| Errol | New Hampshire | Coos | 25 | Low | Satisfactory | 1887 | Hydroelectric |
| Fenn Dam | New Hampshire | Grafton | 25 | Low | Unsatisfactory | 1984 | Recreation |
| Lake Twotowns Dam | New Hampshire | Coos | 25 | Low | Satisfactory | 1936 | Recreation |
| Mcindoes | New Hampshire | Grafton | 25 | Low | Satisfactory | 1931 | Hydroelectric |
| Bowers Dam | New Hampshire | Hillsborough | 25 | High | Poor | 1884 | Water Supply |
| Boston Lot Lake Dam | New Hampshire | Grafton | 25 | Significant | Satisfactory | 1936 | Recreation |
| Jaffrey Sewage Lagoon Dam | New Hampshire | Cheshire | 25 | Significant | Fair | 1984 | Other |
| Goodrich Falls Dam | New Hampshire | Carroll | 25 | Low | Not Rated | 1935 | Hydroelectric |
| Washburn Mill Dam | New Hampshire | Coos | 25 | Undetermined | Not Rated | — | Fish and Wildlife Pond |
| Shehan Pond Dam | New Hampshire | Coos | 25 | Low | Poor | 1960 | Fish and Wildlife Pond |
| Meredith Reservoir Dam | New Hampshire | Belknap | 25 | Low | Satisfactory | 1934 | Recreation |
| Verney Mill Hydro Dam | New Hampshire | Hillsborough | 25 | High | Not Rated | 1916 | Hydroelectric |
| Cross Power | New Hampshire | Coos | 25 | High | Satisfactory | 1903 | Hydroelectric |
| Deering Reservoir Dam | New Hampshire | Hillsborough | 25 | High | Satisfactory | 1940 | Recreation |
| Pheasant Ridge Cc Pond Dam | New Hampshire | Belknap | 25 | Significant | Fair | 1976 | Recreation |
| Souhegan Site 8 Dam | New Hampshire | Hillsborough | 25 | High | Satisfactory | 1977 | Flood Risk Reduction |
| Tyler Tree Farm Dam | New Hampshire | Grafton | 25 | Significant | Fair | 1969 | Fish and Wildlife Pond |
| Baker River Site 11 Dam | New Hampshire | Grafton | 24 | High | Poor | 1971 | Flood Risk Reduction |
| New Wilton Reservoir Dam | New Hampshire | Hillsborough | 24 | High | Poor | 1931 | Recreation |
| Pickering Ponds Dam | New Hampshire | Strafford | 24 | Low | Not Rated | 1980 | Other |
| Gorham | New Hampshire | Coos | 24 | Low | Satisfactory | 1904 | Hydroelectric |
| Apthorp | New Hampshire | Grafton | 24 | Significant | Satisfactory | 1936 | Hydroelectric |
| Sheep Davis Road Dam | New Hampshire | Merrimack | 24 | Low | Fair | 1990 | Flood Risk Reduction |
| Baker River Site 11a Dam | New Hampshire | Grafton | 24 | High | Satisfactory | 1971 | Flood Risk Reduction |
| Bow Lake Dam | New Hampshire | Strafford | 24 | High | Poor | 1832 | Recreation |
| Eastman Holding Pond Dam | New Hampshire | Sullivan | 23 | Low | Not Rated | — | Other |
| Penacook Upper Falls | New Hampshire | Merrimack | 23 | Low | Satisfactory | 1987 | Hydroelectric |
| Davison Wildlife Pond Dam | New Hampshire | Sullivan | 23 | Low | Satisfactory | 1968 | Fish and Wildlife Pond |
| Millen Lake Dam | New Hampshire | Sullivan | 23 | Significant | Satisfactory | 1970 | Recreation |
| Monadnock | New Hampshire | Hillsborough | 22 | Low | Satisfactory | 1923 | Hydroelectric |
| Merrymeeting Lake Dam | New Hampshire | Strafford | 22 | High | Poor | 1924 | Recreation |
| Crystal Lake Dam | New Hampshire | Grafton | 22 | Significant | Satisfactory | 1910 | Recreation |
| Woodward Pond Dam | New Hampshire | Cheshire | 22 | High | Satisfactory | 1836 | Water Supply |
| Webster | New Hampshire | Merrimack | 22 | Significant | Satisfactory | 1917 | Hydroelectric |
| Israel River Dam | New Hampshire | Coos | 22 | Low | Unsatisfactory | 1981 | 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.