Northfield Mt. - Main Dam
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Massachusetts |
| County | Franklin |
| Nearest City | Farley |
| River/Stream | Connecticut River |
| Coordinates | 42.61020, -72.43880 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 145 ft |
| Dam Height | 145 ft |
| Dam Length | 5,500 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 21,500 acre-ft |
| Max Storage | 21,500 acre-ft |
| Normal Storage | 17,050 acre-ft |
| Surface Area | 278 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | FirstLight Power Services LLC |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/04/2022 |
| Emergency Action Plan | Yes |