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 251–267 of 267
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Watson Strafford County | 12 | 1900 | Low | Satisfactory |
| Waumbek Dam Strafford County | 17 | 1880 | Low | Satisfactory |
| Webster Merrimack County | 22 | 1917 | Significant | Satisfactory |
| Webster Lake Dam Merrimack County | 14 | 1873 | High | Satisfactory |
| Weeks Crossing Pond Dam Grafton County | 14 | — | Significant | Satisfactory |
| Weston Coos County | 20 | 1987 | Low | Satisfactory |
| Whitefield Lagoon Dam Coos County | 32 | 1984 | Significant | Satisfactory |
| Whites Pond Dam and Dike Merrimack County | 15 | 1890 | High | Satisfactory |
| Wilder Grafton County | 59 | 1950 | High | Satisfactory |
| Wildlife Pond Dam Sullivan County | 12 | 1972 | Low | Satisfactory |
| Willow Pond Dam Sullivan County | 10 | 1982 | Low | Satisfactory |
| Woodbury Estate Pond Dam Hillsborough County | 16 | 1935 | Significant | Satisfactory |
| Woodsville Grafton County | 12 | 1827 | Significant | Satisfactory |
| Woodward Pond Dam Cheshire County | 22 | 1836 | High | Satisfactory |
| Ws Packaging Canal Dam Hillsborough County | 15 | 1876 | High | Satisfactory |
| Ymca Camp Takodah Sewage Lagoon Dam Cheshire County | 8 | 1940 | Significant | Satisfactory |
| York Merrimack County | 10 | 1967 | Low | Satisfactory |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.