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 101–125 of 162
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Gunnison Lake Site D2 Dam Sullivan County | 62 | 1983 | High | Fair |
| Gumpas Pond Dam Hillsborough County | 10 | 1900 | High | Poor |
| Grist Mill Pond Dam Grafton County | 16 | 1924 | High | Poor |
| Gregg Lake Dam Hillsborough County | 12 | 1908 | High | Poor |
| Gregg Falls Hillsborough County | 66 | 1917 | High | Satisfactory |
| Great East Lake Dam Carroll County | 15 | 1825 | High | Poor |
| Granite Lake Dam Cheshire County | 11 | 1814 | High | Satisfactory |
| Goose Pond Dam Grafton County | 31 | 1918 | High | Poor |
| Goose Pond Dam Cheshire County | 22 | 1868 | High | Satisfactory |
| Goffstown Upper Reservoir Dam Hillsborough County | 31 | 1934 | High | Poor |
| Goffstown Lower Reservoir Dam Hillsborough County | 30 | 1906 | High | Fair |
| George Pond Dam Grafton County | 11 | 1911 | High | Fair |
| Franklin Falls Dam Merrimack County | 116 | 1943 | High | Not Available |
| First Connecticut Lake Dam Coos County | 56 | 1930 | High | Fair |
| Farmington Levee Strafford County | 15 | 1956 | High | Fair |
| Exeter Reservoir Dam Rockingham County | 15 | 1886 | High | Poor |
| Everett Dam - Dike P-2 Hillsborough County | 30 | 1961 | High | Not Available |
| Everett Dam - Dike P-1 Hillsborough County | 50 | 1961 | High | Not Available |
| Everett Dam Hillsborough County | 115 | 1961 | High | Not Available |
| Edward MacDowell Dam Hillsborough County | 63 | 1950 | High | Not Available |
| Eastman Lake Dam Sullivan County | 35 | 1972 | High | Satisfactory |
| Durham Reservoir Dam Strafford County | 17 | 1930 | High | Satisfactory |
| Dorrs Pond Dam Hillsborough County | 9 | 1934 | High | Poor |
| Dole Reservoir Dam Sullivan County | 43 | 1913 | High | Fair |
| Dells Pond Outlet Dam Grafton County | 20 | 1935 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.