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 147
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Pisgah Reservoir Dam Cheshire County | 33 | 1870 | High | Poor |
| Pittsfield Mill Dam Merrimack County | 21 | 1920 | High | Poor |
| Poole Reservoir Dam Cheshire County | 14 | 1926 | Significant | Poor |
| Pratt Pond Dam Hillsborough County | 7 | 1890 | Low | Poor |
| Purity Lake Dam Carroll County | 13 | 1750 | High | Poor |
| Putney Meadow Pond Dam Merrimack County | 8 | 1800 | Low | Poor |
| Red Hill Pond Dam Carroll County | 7 | 1870 | Low | Poor |
| Reservoir Pond Dam Grafton County | 11 | 1900 | Low | Poor |
| Richardson Brook Pond Dam Sullivan County | 12 | 1968 | Low | Poor |
| Richardson Pond Dam Strafford County | 8 | 1935 | Low | Poor |
| Rivermill Mascoma Hydro Dam Grafton County | 22 | 1920 | High | Poor |
| Rollins Pond Dam Belknap County | 17 | 1800 | Low | Poor |
| Runaway Pond East Dam Merrimack County | 15 | 1814 | Significant | Poor |
| Sargent Lake Dam Belknap County | 17 | 1870 | High | Poor |
| Sauls Pond Dam Rockingham County | 10 | 1988 | Low | Poor |
| Sawyer Lake Dam Belknap County | 19 | 1916 | High | Poor |
| Scott Pond Dam Cheshire County | 10 | 1918 | Significant | Poor |
| Scribner Road Dam Rockingham County | 12 | 1930 | Low | Poor |
| Seavey Pond Outlet Dam Rockingham County | 8 | — | Low | Poor |
| Shehan Pond Dam Coos County | 25 | 1960 | Low | Poor |
| Silica Pond Dam Cheshire County | 9 | 1930 | Significant | Poor |
| Socha Dam Rockingham County | 8 | 1930 | Low | Poor |
| Spoons Pond Dam Cheshire County | 20 | 1966 | Low | Poor |
| Stone Pond Dam Cheshire County | 16 | 1922 | Low | Poor |
| Stratford Bog Pond Dam Coos County | 16 | 1934 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.