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 26–50 of 162
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Childs Bog Dam Cheshire County | 17 | 1924 | High | Satisfactory |
| China Mill Dam Merrimack County | 29 | 1860 | High | Fair |
| Cold River Site 1 Dam Carroll County | 43 | 1969 | High | Satisfactory |
| Comerford Grafton County | 170 | 1930 | High | Satisfactory |
| Copps Pond Dam Carroll County | 16 | 1940 | High | Satisfactory |
| Corcoran Pond Dam Grafton County | 17 | 1976 | High | Satisfactory |
| Crescent Lake Dam Carroll County | 15 | 1854 | High | Satisfactory |
| Cross Power Coos County | 25 | 1903 | High | Satisfactory |
| Crystal Lake Dam Belknap County | 16 | 1958 | High | Poor |
| Damon Upper Reservoir Dam Cheshire County | 14 | 1835 | High | Satisfactory |
| Dead River Dam 1 Coos County | 47 | 1970 | High | Fair |
| Deering Reservoir Dam Hillsborough County | 25 | 1940 | High | Satisfactory |
| Dells Pond Outlet Dam Grafton County | 20 | 1935 | High | Poor |
| Dole Reservoir Dam Sullivan County | 43 | 1913 | High | Fair |
| Dorrs Pond Dam Hillsborough County | 9 | 1934 | High | Poor |
| Durham Reservoir Dam Strafford County | 17 | 1930 | High | Satisfactory |
| Eastman Lake Dam Sullivan County | 35 | 1972 | High | Satisfactory |
| Edward MacDowell Dam Hillsborough County | 63 | 1950 | High | Not Available |
| Everett Dam Hillsborough County | 115 | 1961 | High | Not Available |
| Everett Dam - Dike P-1 Hillsborough County | 50 | 1961 | High | Not Available |
| Everett Dam - Dike P-2 Hillsborough County | 30 | 1961 | High | Not Available |
| Exeter Reservoir Dam Rockingham County | 15 | 1886 | High | Poor |
| Farmington Levee Strafford County | 15 | 1956 | High | Fair |
| First Connecticut Lake Dam Coos County | 56 | 1930 | High | Fair |
| Franklin Falls Dam Merrimack County | 116 | 1943 | High | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.