Penobscot Lake

Penobscot Lake is a concrete dam located in Somerset County, Maine, built in 1916. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Penobscot Lake

The primary purpose of Penobscot Lake is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. It impounds the Penobscot Brook.

The dam stands 14 feet tall and stretches 565 feet across, creates a reservoir covering 1,075 acres, has a maximum storage capacity of 8,081 acre-feet, and collects water from a drainage area of 16 square miles. Completed in 1916, 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 07/12/2018.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateMaine
CountySomerset
River/StreamPenobscot Brook
Coordinates45.91090, -70.22110

Physical Characteristics

Dam TypeConcrete
NID Height14 ft
Dam Height14 ft
Dam Length565 ft
Year Completed1916 (110 years old)

Storage & Hydraulics

NID Storage8,081 acre-ft
Max Storage8,081 acre-ft
Normal Storage8,081 acre-ft
Surface Area1,075 acres
Drainage Area16 sq mi
Spillway TypeNone

Ownership & Safety

PurposeHydroelectric
Owner TypeNot Listed
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection07/12/2018
Emergency Action PlanNot Required

Identifiers

NID IDME00216
Federal IDME00216
More InfoState Dam Safety Program

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