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 |
|---|---|---|---|---|
| Davison Wildlife Pond Dam Sullivan County | 23 | 1968 | Low | Satisfactory |
| Dartmouth Skiway Sewage Lagoon Dam Grafton County | 4 | 1967 | Significant | Satisfactory |
| Damon Upper Reservoir Dam Cheshire County | 14 | 1835 | High | Satisfactory |
| Cummins Pond Dam Grafton County | 10 | 1880 | Low | Satisfactory |
| Crystal Lake Dam Grafton County | 22 | 1910 | Significant | Satisfactory |
| Crotched Mtn Storage Lagoon Dam Hillsborough County | 15 | 1989 | Significant | Satisfactory |
| Cross Power Coos County | 25 | 1903 | High | Satisfactory |
| Crescent Lake Dam Carroll County | 15 | 1854 | High | Satisfactory |
| Country Club Pond Dam Rockingham County | 25 | 1996 | Low | Satisfactory |
| Corcoran Pond Dam Grafton County | 17 | 1976 | High | Satisfactory |
| Copps Pond Dam Carroll County | 16 | 1940 | High | Satisfactory |
| Conway Treatment Lagoon Dam Carroll County | 7 | 1985 | Significant | Satisfactory |
| Comerford Grafton County | 170 | 1930 | High | Satisfactory |
| Cole Pond Dam Merrimack County | 10 | 1973 | Low | Satisfactory |
| Colebrook Sewage Lagoon Dam Coos County | 15 | 1975 | Significant | Satisfactory |
| Cold River Site 1 Dam Carroll County | 43 | 1969 | High | Satisfactory |
| Cold Brook Pond Dam Sullivan County | 19 | 1956 | Significant | Satisfactory |
| Cohas Avenue Dam Hillsborough County | 20 | 1874 | Low | Satisfactory |
| Cocheco Falls Strafford County | 9 | 1930 | Significant | Satisfactory |
| Cobble Mountain Dam Belknap County | 19 | 1986 | Low | Satisfactory |
| Childs Bog Dam Cheshire County | 17 | 1924 | High | Satisfactory |
| Cheshire Mills Cheshire County | 27 | 1886 | Significant | Satisfactory |
| Cheshire Cheshire County | 13 | 1939 | Low | Satisfactory |
| Chesham Pond Dam Cheshire County | 16 | 1921 | High | Satisfactory |
| Ches Cnty Ww Lagoon Dam Cheshire County | 20 | 1971 | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.