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 267
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Shop Pond Dam Rockingham County | 13 | 1930 | Significant | Satisfactory |
| Silver Lake Dam Cheshire County | 12 | 1924 | Low | Satisfactory |
| Silver Lake Dam Hillsborough County | 8 | 1930 | Low | Satisfactory |
| Skatutakee Lake Dam Cheshire County | 13 | 1778 | Significant | Satisfactory |
| Somersworth Strafford County | 17 | 1929 | Significant | Satisfactory |
| Souhegan River Site 10a Dam Hillsborough County | 59 | 1966 | High | Satisfactory |
| Souhegan River Site 13 Dam Hillsborough County | 14 | 1964 | Low | Satisfactory |
| Souhegan River Site 28 Dam Hillsborough County | 29 | 1964 | High | Satisfactory |
| Souhegan Site 8 Cemetery Dike Hillsborough County | 16 | 1977 | Low | Satisfactory |
| Souhegan Site 8 Dam Hillsborough County | 25 | 1977 | High | Satisfactory |
| Souhegan Site 8 South Dike Hillsborough County | 9 | 1977 | Low | Satisfactory |
| South Berwick Strafford County | 18 | 1923 | Low | Satisfactory |
| South Mill Pond Dam Rockingham County | 14 | 1983 | Low | Satisfactory |
| South Milton Strafford County | 15 | 1893 | Low | Satisfactory |
| Spaulding Pond Dam Strafford County | 19 | 1899 | Low | Satisfactory |
| Spectacle Pond Dam Grafton County | 7 | 1915 | High | Satisfactory |
| Spofford Lake Dam Cheshire County | 11 | 1919 | Significant | Satisfactory |
| Sportsman Pond Dam Cheshire County | 15 | 1910 | Low | Satisfactory |
| Squam Lake Grafton County | 17 | 1856 | High | Satisfactory |
| Stark Pond Dam Merrimack County | 12 | 1760 | Low | Satisfactory |
| Star Lake Dam Sullivan County | 7 | 1920 | Low | Satisfactory |
| Steels Pond Hillsborough County | 14 | 1909 | Significant | Satisfactory |
| Stevens Mill Merrimack County | 22 | 1930 | Significant | Satisfactory |
| Stinson Lake Dam Grafton County | 8 | 1780 | Low | Satisfactory |
| Stone Pond Mill Dam Cheshire County | 7 | 1920 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.