East Millinocket
East Millinocket is a concrete dam located in Penobscot County, Maine, built in 1907. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About East Millinocket
The primary purpose of East Millinocket is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Great Lakes Hydro American, Llc (private). It impounds the West Branch Penobscot River near East Millinocket.
The dam stands 26 feet tall and stretches 717 feet across, creates a reservoir covering 128 acres, has a maximum storage capacity of 1,950 acre-feet, and collects water from a drainage area of 2,111 square miles. Completed in 1907, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/09/2022.
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Location
| State | Maine |
| County | Penobscot |
| Nearest City | East Millinocket |
| River/Stream | West Branch Penobscot River |
| Coordinates | 45.62103, -68.57582 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 717 ft |
| Year Completed | 1907 (119 years old) |
Storage & Hydraulics
| NID Storage | 1,950 acre-ft |
| Max Storage | 1,950 acre-ft |
| Normal Storage | 1,950 acre-ft |
| Surface Area | 128 acres |
| Drainage Area | 2,111 sq mi |
| Max Discharge | 75,500 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Great Lakes Hydro American, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/09/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ME00200 |
| Federal ID | ME00200 |
| More Info | State Dam Safety Program |