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 576–600 of 664
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Campton Pond Hydro Dam Grafton County | 39 | 1890 | High | Fair |
| Campton Bog Pond Dam Grafton County | 10 | 1836 | Low | Fair |
| Camp Foss Sewage Lagoon Dam Strafford County | 10 | 1979 | Significant | Poor |
| Calef Lake Dam Rockingham County | 8 | — | Low | Satisfactory |
| Burton Pond Dam Hillsborough County | 14 | 1837 | Low | Fair |
| Burns Lake Dam Coos County | 13 | 1921 | Low | Fair |
| Brooklyn Coos County | 19 | 1919 | Significant | Unsatisfactory |
| Briar Pipe Merrimack County | 17 | 1936 | Low | Satisfactory |
| Bradley Lake Dam Merrimack County | 19 | 1952 | Significant | Satisfactory |
| Bow Lake Dam Strafford County | 24 | 1832 | High | Poor |
| Bowker Pond Dam Cheshire County | 14 | 1859 | Significant | Fair |
| Bowers Dam Hillsborough County | 25 | 1884 | High | Poor |
| Boundary Pond Dam Coos County | 10 | 1952 | Low | Satisfactory |
| Boston Lot Lake Dam Grafton County | 25 | 1936 | Significant | Satisfactory |
| Boston Felt Strafford County | 10 | 1983 | Low | Satisfactory |
| Bog Pond Dam Merrimack County | 17 | 1870 | Significant | Satisfactory |
| Bog Brook Pond Dam Sullivan County | 18 | 1957 | Low | Satisfactory |
| Bodwell Septage Facility Dam Rockingham County | 9 | 2010 | Significant | Satisfactory |
| Blaisdell Lake Dam Merrimack County | 9 | 1916 | Low | Poor |
| Blackwater Dam - Little Hill Dike Merrimack County | 38 | 1941 | High | Not Available |
| Blackwater Dam - Dodge Estate Dike Merrimack County | 18 | 1941 | High | Not Available |
| Blackwater Dam Merrimack County | 75 | 1941 | High | Not Available |
| Black Reservoir Dam Cheshire County | 10 | 1850 | Significant | Poor |
| Black Pond Dam Hillsborough County | 10 | 1926 | Low | Fair |
| Black Fox Pond Dam Hillsborough County | 12 | 1975 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.