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 126–150 of 162
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Deering Reservoir Dam Hillsborough County | 25 | 1940 | High | Satisfactory |
| Dead River Dam 1 Coos County | 47 | 1970 | High | Fair |
| Damon Upper Reservoir Dam Cheshire County | 14 | 1835 | High | Satisfactory |
| Crystal Lake Dam Belknap County | 16 | 1958 | High | Poor |
| Cross Power Coos County | 25 | 1903 | High | Satisfactory |
| Crescent Lake Dam Carroll County | 15 | 1854 | High | Satisfactory |
| Corcoran Pond Dam Grafton County | 17 | 1976 | High | Satisfactory |
| Copps Pond Dam Carroll County | 16 | 1940 | High | Satisfactory |
| Comerford Grafton County | 170 | 1930 | High | Satisfactory |
| Cold River Site 1 Dam Carroll County | 43 | 1969 | High | Satisfactory |
| China Mill Dam Merrimack County | 29 | 1860 | High | Fair |
| Childs Bog Dam Cheshire County | 17 | 1924 | High | Satisfactory |
| Cheshire Mills Lower Dam Cheshire County | 18 | 1848 | High | Poor |
| Chesham Pond Dam Cheshire County | 16 | 1921 | High | Satisfactory |
| Cascade Coos County | 57 | 1903 | High | Fair |
| Campton Pond Hydro Dam Grafton County | 39 | 1890 | High | Fair |
| Bow Lake Dam Strafford County | 24 | 1832 | High | Poor |
| Bowers Dam Hillsborough County | 25 | 1884 | High | 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 |
| Berry Pond Dam Merrimack County | 18 | 1884 | High | Satisfactory |
| Bellamy Reservoir Dam Strafford County | 35 | 1962 | High | Satisfactory |
| Beech River Mill Dam Carroll County | 14 | 1851 | High | Poor |
| Barnstead Parade Dam Belknap County | 16 | 1830 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.