Ayers Island
Significant HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | Bristol |
| River/Stream | Pemigewasset River |
| Coordinates | 43.59779, -71.71751 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 80 ft |
| Dam Height | 80 ft |
| Dam Length | 699 ft |
| Year Completed | 1924 (102 years old) |
Storage & Hydraulics
| NID Storage | 10,000 acre-ft |
| Max Storage | 10,000 acre-ft |
| Normal Storage | 10,000 acre-ft |
| Surface Area | 800 acres |
| Drainage Area | 746 sq mi |
| Max Discharge | 92,100 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/26/2022 |
| Emergency Action Plan | Yes |