Amoskeag
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | New Hampshire |
| County | Hillsborough |
| Nearest City | Manchester |
| River/Stream | Merrimack River |
| Coordinates | 43.00220, -71.47230 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 1,075 ft |
| Year Completed | 1921 (105 years old) |
Storage & Hydraulics
| NID Storage | 4,320 acre-ft |
| Max Storage | 4,320 acre-ft |
| Normal Storage | 4,320 acre-ft |
| Surface Area | 478 acres |
| Drainage Area | 2,854 sq mi |
| Max Discharge | 87,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 08/06/2025 |
| Emergency Action Plan | Yes |