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 301–325 of 664
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Kendall Pond Dam Rockingham County | 12 | 1930 | Low | Fair |
| Kenneth Hill Pond Dam Strafford County | 12 | 1970 | Significant | Poor |
| Kilburn Pond Dam Cheshire County | 15 | 1935 | Low | Satisfactory |
| Kilton Pond Dam Grafton County | 12 | 1930 | Low | Fair |
| Kimball Lake Dam Merrimack County | 7 | 1930 | Low | Poor |
| Kimball Pond Dam Merrimack County | 8 | 1850 | Low | Satisfactory |
| Kingswood Lake Dam Carroll County | 10 | 1900 | Low | Not Rated |
| Knight Meadow Pond Dam Merrimack County | 9 | 1966 | Low | Fair |
| Knowles Pond Dam Merrimack County | 11 | 1935 | Low | Satisfactory |
| Lake Gloriette Dam Coos County | 33 | 1913 | High | Poor |
| Lake Gloriette Dike Coos County | 34 | 1913 | High | Poor |
| Lake Kanasatka Dam Carroll County | 17 | 1928 | Significant | Poor |
| Lakeport Belknap County | 10 | 1958 | Significant | Satisfactory |
| Lake Tarleton Dam Grafton County | 8 | 1800 | Low | Satisfactory |
| Lake Twotowns Dam Coos County | 25 | 1936 | Low | Satisfactory |
| Lake Waukewan Dam Belknap County | 15 | 1880 | High | Poor |
| Lake Wicwas Dam Belknap County | 7 | 1937 | Low | Poor |
| Larrys Pond Dam Cheshire County | 19 | 1970 | Low | Not Rated |
| Lcs Settling Ponds 4 and 5 Dam Grafton County | 15 | 1980 | Low | Not Rated |
| Lebanon Water Treatment Intake Dam Grafton County | 16 | 1934 | Significant | Satisfactory |
| Lime Pond Dam Coos County | 10 | 1934 | Low | Satisfactory |
| Lincoln Sewage Lagoon Dam Grafton County | 19 | 1975 | Significant | Satisfactory |
| Lisbon Wastewater Lagoons Dam Grafton County | 13 | — | Significant | Satisfactory |
| Little Bog Pond Dam Coos County | 18 | 1930 | Low | Not Rated |
| Little Cohas Brook Dam Rockingham County | 10 | 1953 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.