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 201–225 of 300
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Gilman Coos County | 38 | 1898 | Low | Satisfactory |
| Gillan Pond Dam Belknap County | 10 | 1971 | Low | Poor |
| Giles Pond Merrimack County | 18 | 1904 | Low | Satisfactory |
| Garvins Falls Merrimack County | 18 | 1901 | Low | Satisfactory |
| Fullam Pond Dam Cheshire County | 18 | — | Low | Not Rated |
| Freestyle Farm Pond Dam Hillsborough County | 12 | 1962 | Low | Satisfactory |
| Freeses Pond Dam Rockingham County | 13 | 1930 | Low | Fair |
| Fountain Pond Center Dam Merrimack County | 14 | 1800 | Low | Not Rated |
| Forest Lake Dam Cheshire County | 8 | 1915 | Low | Poor |
| Foote Pond Dam Belknap County | 16 | 1971 | Low | Poor |
| Flintlock Estates Fire Pond Dam Merrimack County | 8 | 1987 | Low | Fair |
| Flagpole Pond Dike Merrimack County | 15 | 1967 | Low | Fair |
| Flagpole Pond Dam Merrimack County | 21 | 1967 | Low | Fair |
| Fiske Mill Hydro Dam Cheshire County | 20 | 1922 | Low | Not Rated |
| First Conn Lake South Bay Dike Coos County | 14 | — | Low | Fair |
| Fifield Farm Pond Dam Merrimack County | 13 | 1966 | Low | Fair |
| Ferson Pond Dam Grafton County | 7 | 1998 | Low | Poor |
| Fenn Dam Grafton County | 25 | 1984 | Low | Unsatisfactory |
| Evas Marsh Dam Hillsborough County | 9 | 1962 | Low | Poor |
| Errol Coos County | 25 | 1887 | Low | Satisfactory |
| Emery Road Dam Merrimack County | 10 | 1910 | Low | Fair |
| Eel Pond Dam Rockingham County | 15 | — | Low | Satisfactory |
| Echo Lake Dam Grafton County | 7 | 1990 | Low | Satisfactory |
| Eastman Holding Pond Dam Sullivan County | 23 | — | Low | Not Rated |
| East Inlet Dam Coos County | 13 | 1900 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.