North Twin
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Maine |
| County | Penobscot |
| Nearest City | Millinocket |
| River/Stream | West Branch Penobscot River |
| Coordinates | 45.63486, -68.78094 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 1,051 ft |
| Year Completed | 1934 (92 years old) |
Storage & Hydraulics
| NID Storage | 346,000 acre-ft |
| Max Storage | 346,000 acre-ft |
| Normal Storage | 346,000 acre-ft |
| Surface Area | 17,790 acres |
| Drainage Area | 1,877 sq mi |
| Max Discharge | 72,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/10/2022 |
| Emergency Action Plan | Yes |