New Hampshire Dams
664 dams tracked by the National Inventory of Dams
Total Dams
664
High Hazard
162
24.4%
Poor / Unsatisfactory
152
Average Age
100 yrs
Hazard Classification
High162 (24.4%)
Significant185 (27.9%)
Low300 (45.2%)
Condition Assessment
Satisfactory267 (40.2%)
Fair169 (25.5%)
Poor / Unsatisfactory152 (22.9%)
Not Rated76 (11.4%)
Federal
22
State
170
Local
195
Private
261
Tallest Dams
- Comerford 170 ft
- Moore 149 ft
- Otter Brook Dam119 ft
- Franklin Falls Dam116 ft
- Everett Dam115 ft
High Hazard Dams
- Comerford High
- Moore High
- Otter Brook DamHigh
- Franklin Falls DamHigh
- Everett DamHigh
Poor Condition Dams
All Dams in New Hampshire
Showing 26–50 of 147
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Crystal Lake Dam Belknap County | 16 | 1958 | High | Poor |
| Currier Pond Dam Strafford County | 10 | 1963 | Low | Poor |
| Dan Hole River Dam Carroll County | 29 | 1935 | Significant | Poor |
| Daniels Lake Dam Hillsborough County | 12 | 1961 | Low | Poor |
| Dells Pond Outlet Dam Grafton County | 20 | 1935 | High | Poor |
| Dickerman Pond Dam Belknap County | 20 | 1930 | Significant | Poor |
| Dorrs Pond Dam Hillsborough County | 9 | 1934 | High | Poor |
| Dube Pond Dam Merrimack County | 8 | 1966 | Significant | Poor |
| Dudley Pond Dam Hillsborough County | 13 | — | Low | Poor |
| Evas Marsh Dam Hillsborough County | 9 | 1962 | Low | Poor |
| Exeter Reservoir Dam Rockingham County | 15 | 1886 | High | Poor |
| Exeter River Dam Rockingham County | 15 | 1927 | Significant | Poor |
| Ferson Pond Dam Grafton County | 7 | 1998 | Low | Poor |
| Foote Pond Dam Belknap County | 16 | 1971 | Low | Poor |
| Forest Lake Dam Cheshire County | 8 | 1915 | Low | Poor |
| Gillan Pond Dam Belknap County | 10 | 1971 | Low | Poor |
| Goffstown Upper Reservoir Dam Hillsborough County | 31 | 1934 | High | Poor |
| Goose Pond Dam Grafton County | 31 | 1918 | High | Poor |
| Great East Lake Dam Carroll County | 15 | 1825 | High | Poor |
| Gregg Lake Dam Hillsborough County | 12 | 1908 | High | Poor |
| Grist Mill Pond Dam Grafton County | 16 | 1924 | High | Poor |
| Gulch Mountain Pond Dam Rockingham County | 15 | 1965 | Significant | Poor |
| Gumpas Pond Dam Hillsborough County | 10 | 1900 | High | Poor |
| Harantis Lake Dam Rockingham County | 14 | 1930 | Significant | Poor |
| Harris Brook Reservoir Dam Grafton County | 22 | 1903 | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.