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 76–100 of 147
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Melvin River Dam Carroll County | 17 | 1930 | Significant | Poor |
| Mendums Pond Dam Rockingham County | 31 | 1840 | High | Poor |
| Merrymeeting Lake Dam Strafford County | 22 | 1924 | High | Poor |
| Mill Pond Dam Cheshire County | 20 | 1880 | Low | Poor |
| Mill Pond Dam Strafford County | 10 | 1935 | Low | Poor |
| Millville Lake Dam Rockingham County | 20 | 1917 | High | Poor |
| Milton Leatherboard Dam Strafford County | 32 | 1904 | Significant | Poor |
| Milton Three Ponds Dam Strafford County | 19 | 1824 | High | Poor |
| Moose Falls Dam Coos County | 10 | 1950 | Significant | Poor |
| Morrill Mill Pond Dam Merrimack County | 11 | 1800 | Low | Poor |
| Newfound Lake Dam Grafton County | 12 | 1840 | High | Poor |
| New Wilton Reservoir Dam Hillsborough County | 24 | 1931 | High | Poor |
| Northwood Lake Dam Merrimack County | 13 | 1926 | High | Poor |
| Nubanusit Lake Dam Cheshire County | 16 | 1861 | Significant | Poor |
| Onway Lake Dam Rockingham County | 9 | 1915 | Low | Poor |
| Ossipee Lake Dam Headworks Dam Carroll County | 12 | 1919 | Low | Poor |
| Pawtuckaway Lake Dollof Dam Rockingham County | 28 | 1842 | High | Poor |
| Pawtuckaway Lake /Drowns Dam Rockingham County | 18 | 1842 | Significant | Poor |
| Pawtuckaway Lake/ Drowns Dike Rockingham County | 12 | 1842 | Low | Poor |
| Pawtuckaway Lake/Gove Dike Rockingham County | 9 | 1842 | Significant | Poor |
| Pearl Lake Dam Grafton County | 10 | 1930 | Low | Poor |
| Penacook Lake Dam Merrimack County | 9 | 1873 | High | Poor |
| Perry Pond Dam Coos County | 7 | 1947 | Undetermined | Poor |
| Pickpocket Dam Rockingham County | 15 | 1920 | High | Poor |
| Pierce Pond Dam Hillsborough County | 8 | 1700 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.