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 226–250 of 664
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Goffstown Upper Reservoir Dam Hillsborough County | 31 | 1934 | High | Poor |
| Goldfish Pond Dam Merrimack County | 16 | 1974 | Low | Fair |
| Goldman Dam Hillsborough County | 12 | 1930 | Low | Not Rated |
| Gonic Dam Strafford County | 16 | 1935 | Significant | Fair |
| Goodrich Falls Dam Carroll County | 25 | 1935 | Low | Not Rated |
| Goose Pond Dam Grafton County | 31 | 1918 | High | Poor |
| Goose Pond Dam Merrimack County | 12 | 1920 | Low | Not Rated |
| Goose Pond Dam Cheshire County | 22 | 1868 | High | Satisfactory |
| Goose Pond Dike Cheshire County | 8 | 1868 | Low | Fair |
| Gordon Hill Water Supply Dam Belknap County | 15 | 1934 | Significant | Satisfactory |
| Gorham Coos County | 20 | 1958 | Low | Satisfactory |
| Gorham Coos County | 24 | 1904 | Low | Satisfactory |
| Grafton Pond Dam Grafton County | 21 | 1918 | Low | Fair |
| Granite Lake Dam Cheshire County | 11 | 1814 | High | Satisfactory |
| Grassy Pond Dam Merrimack County | 9 | 1836 | Low | Fair |
| Great East Lake Dam Carroll County | 15 | 1825 | High | Poor |
| Gregg Falls Hillsborough County | 66 | 1917 | High | Satisfactory |
| Gregg Lake Dam Hillsborough County | 12 | 1908 | High | Poor |
| Grist Mill Pond Dam Grafton County | 16 | 1924 | High | Poor |
| Groveton Municipal Lagoons Dam Coos County | 20 | 2012 | Significant | Satisfactory |
| Groveton Paper Mill Lagoons Dam Coos County | 25 | 2010 | Significant | Fair |
| Gulch Mountain Pond Dam Rockingham County | 15 | 1965 | Significant | Poor |
| Gumpas Pond Dam Hillsborough County | 10 | 1900 | High | Poor |
| Gunnison Lake Site D2 Dam Sullivan County | 62 | 1983 | High | Fair |
| Hadley Falls Hillsborough County | 20 | 1922 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.