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 1–25 of 169
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Adams Pond Dam Belknap County | 10 | 1962 | Low | Fair |
| Amoskeag Hillsborough County | 29 | 1921 | High | Fair |
| Arlington Mill Res Evergreen Dike Rockingham County | 31 | 1922 | Significant | Fair |
| Ashland Sewage Lagoon Dam Grafton County | 15 | 1968 | Significant | Fair |
| Ayers Pond Dam Strafford County | 18 | 1810 | Significant | Fair |
| Ayers Pond Dam Hillsborough County | 16 | 1865 | Low | Fair |
| Baker River Site 2 Dam Grafton County | 68 | 1965 | High | Fair |
| Balsams Wastewater Lagoons Dam Coos County | 28 | 1965 | Significant | Fair |
| Baxter Lake Center Dike Strafford County | 10 | 1923 | Low | Fair |
| Baxter Lake East Dike Strafford County | 10 | 1923 | Low | Fair |
| Baxter Lake Main Dam Strafford County | 19 | 1923 | Significant | Fair |
| Bear Hill Pond Dam Merrimack County | 7 | 1885 | Low | Fair |
| Beaver Brook Assoc Wldlife Pond Dam Hillsborough County | 12 | 1968 | Low | Fair |
| Berry Brook Reservoir Dam Strafford County | 28 | 1930 | Low | Fair |
| Big Brook Bog Dam Coos County | 11 | 1946 | Significant | Fair |
| Big Dan Hole Pond Dam Carroll County | 13 | 1910 | Significant | Fair |
| Black Pond Dam Hillsborough County | 10 | 1926 | Low | Fair |
| Bowker Pond Dam Cheshire County | 14 | 1859 | Significant | Fair |
| Burns Lake Dam Coos County | 13 | 1921 | Low | Fair |
| Burton Pond Dam Hillsborough County | 14 | 1837 | Low | Fair |
| Campton Bog Pond Dam Grafton County | 10 | 1836 | Low | Fair |
| Campton Pond Hydro Dam Grafton County | 39 | 1890 | High | Fair |
| Campus Drive Dam Merrimack County | 26 | 2006 | Significant | Fair |
| Cascade Coos County | 57 | 1903 | High | Fair |
| Cascade Brook Dam Merrimack County | 11 | 1955 | Low | Fair |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.