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 151–175 of 664
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Davison Wildlife Pond Dam Sullivan County | 23 | 1968 | Low | Satisfactory |
| Dead River Dam 1 Coos County | 47 | 1970 | High | Fair |
| Dead River Dike Coos County | 14 | 1970 | Low | Fair |
| Deep Hole Pond Dam Rockingham County | 15 | 1974 | Low | Fair |
| Deering Reservoir Dam Hillsborough County | 25 | 1940 | High | Satisfactory |
| Deer Meadow Pond Dam Merrimack County | 15 | 1938 | Low | Fair |
| Deer Pond Dam Rockingham County | 12 | 1963 | Low | Fair |
| Dells Pond Outlet Dam Grafton County | 20 | 1935 | High | Poor |
| Derry Waste Lagoon Dam Rockingham County | 21 | 1978 | Significant | Satisfactory |
| Dickerman Pond Dam Belknap County | 20 | 1930 | Significant | Poor |
| Dimond Pond Dam Rockingham County | 12 | 1880 | Undetermined | Not Rated |
| Dodge Falls Grafton County | 18 | 1905 | Low | Satisfactory |
| Dodge Pond Dam Grafton County | 13 | 1936 | Low | Satisfactory |
| Dole Marsh Dam Rockingham County | 8 | 1977 | Low | Satisfactory |
| Dole Reservoir Dam Sullivan County | 43 | 1913 | High | Fair |
| Dole Reservoir Dike Sullivan County | 11 | 1913 | Significant | Fair |
| Dorrs Pond Dam Hillsborough County | 9 | 1934 | High | Poor |
| Dorr Woolen Sewage Lagoon Dam Sullivan County | 20 | 1982 | Significant | Fair |
| Downing Pond Dam Strafford County | 15 | 1921 | Low | Fair |
| Dream Lake Dam Hillsborough County | 9 | 1966 | Undetermined | Not Rated |
| Drew Lake South Weir Hillsborough County | 12 | — | Low | Not Rated |
| Dube Pond Dam Merrimack County | 8 | 1966 | Significant | Poor |
| Dudley Pond Dam Hillsborough County | 13 | — | Low | Poor |
| Dunklee Pond Dam Hillsborough County | 9 | 1986 | Low | Fair |
| Durham Reservoir Dam Strafford County | 17 | 1930 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.