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 664
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| White Oak Pond Dam Grafton County | 8 | 1920 | Low | Fair |
| Whitefield Lagoon Dam Coos County | 32 | 1984 | Significant | Satisfactory |
| Weston Coos County | 20 | 1987 | Low | Satisfactory |
| Wendall Marsh Dam Sullivan County | 15 | — | Significant | Fair |
| Weeks Crossing Pond Dam Grafton County | 14 | — | Significant | Satisfactory |
| Webster Valve CO Dam Merrimack County | 15 | 1901 | Significant | Poor |
| Webster Lake Dam Merrimack County | 14 | 1873 | High | Satisfactory |
| Webster Merrimack County | 22 | 1917 | Significant | Satisfactory |
| Weare Reservoir Dam Hillsborough County | 34 | 1913 | High | Poor |
| Waumbek Dam Strafford County | 17 | 1880 | Low | Satisfactory |
| Watson Strafford County | 12 | 1900 | Low | Satisfactory |
| Waterville Valley Lagoons Dam Grafton County | 19 | 1972 | Significant | Satisfactory |
| Waterloom Falls Hillsborough County | 18 | 1980 | Low | Satisfactory |
| Wason Pond Dam Rockingham County | 18 | 1931 | Low | Satisfactory |
| Washburn Mill Dam Coos County | 25 | — | Undetermined | Not Rated |
| Washburn Corners Dam Sullivan County | 14 | 1950 | Low | Satisfactory |
| Warren Lake Dam Cheshire County | 13 | 1771 | High | Poor |
| Walpole Reservoir Dam Cheshire County | 20 | 1901 | High | Poor |
| Walker Pond Dam Merrimack County | 6 | 1900 | Undetermined | Not Rated |
| Wadleigh Falls Dam Strafford County | 13 | 1906 | Undetermined | Poor |
| Village Pond Dam Cheshire County | 12 | 1915 | Low | Satisfactory |
| Village Pond Dam Cheshire County | 15 | 1919 | Significant | Poor |
| Vilas Pool Dam Cheshire County | 31 | 1866 | Significant | Poor |
| Vernon Cheshire County | 58 | 1909 | Low | Satisfactory |
| Verney Mill Hydro Dam Hillsborough County | 25 | 1916 | High | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.