Lower Lisbon
New Hampshire — Grafton County — Ammonoosuc River
Location
| State | New Hampshire |
| County | Grafton |
| River | Ammonoosuc River |
| Coordinates | 44.21430, -71.91100 |
Physical Characteristics
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 292 ft |
| NID Storage | 96 acre-ft |
| Max Storage | 96 acre-ft |
| Surface Area | 64 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Satisfactory |
| EAP Status | Not Required |
| Last Inspection | May 22, 2018 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1986 |
| Primary Purpose | Hydroelectric |
| Dam Type | Concrete |
| Owner Type | Private |
| Owner | White Mountain Hydroelectric Corporation |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.