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 176–200 of 267
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Gorham Coos County | 20 | 1958 | Low | Satisfactory |
| Gordon Hill Water Supply Dam Belknap County | 15 | 1934 | Significant | Satisfactory |
| Goose Pond Dam Cheshire County | 22 | 1868 | High | Satisfactory |
| Godfrey Dam Coos County | 18 | 1920 | Significant | Satisfactory |
| Glen Road Grafton County | 17 | 1988 | Significant | Satisfactory |
| Gilson Pond Dam Cheshire County | 11 | 1875 | Low | Satisfactory |
| Gilman Coos County | 38 | 1898 | Low | Satisfactory |
| Giles Pond Merrimack County | 18 | 1904 | Low | Satisfactory |
| Garvins Falls Merrimack County | 18 | 1901 | Low | Satisfactory |
| Freestyle Farm Pond Dam Hillsborough County | 12 | 1962 | Low | Satisfactory |
| Faraway Pond Dam Coos County | 20 | 1975 | Significant | Satisfactory |
| Exeter Sewage Lagoon Dam Rockingham County | 12 | 1989 | Significant | Satisfactory |
| Exeter Sewage Holding Pond Dam Rockingham County | 10 | 1989 | Significant | Satisfactory |
| Errol Coos County | 25 | 1887 | Low | Satisfactory |
| Eel Pond Dam Rockingham County | 15 | — | Low | Satisfactory |
| Echo Lake Dam Grafton County | 7 | 1990 | Low | Satisfactory |
| Eastman Lake Dam Sullivan County | 35 | 1972 | High | Satisfactory |
| Eastman Falls Merrimack County | 43 | 1937 | Significant | Satisfactory |
| East Inlet Dam Coos County | 13 | 1900 | Low | Satisfactory |
| Durham Reservoir Dam Strafford County | 17 | 1930 | High | Satisfactory |
| Dole Marsh Dam Rockingham County | 8 | 1977 | Low | Satisfactory |
| Dodge Pond Dam Grafton County | 13 | 1936 | Low | Satisfactory |
| Dodge Falls Grafton County | 18 | 1905 | Low | Satisfactory |
| Derry Waste Lagoon Dam Rockingham County | 21 | 1978 | Significant | Satisfactory |
| Deering Reservoir Dam Hillsborough County | 25 | 1940 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.