North Twin

Penobscot County, Maine (near Millinocket)

River/Stream: West Branch Penobscot River

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Earth
Height
35 ft
Dam Length
1,051 ft
Reservoir Storage
346,000 acre-ft
Year Completed
1934
Primary Purpose
Hydroelectric
Owner Type
Not Listed
Max Discharge
72,000 cfs

Condition Assessment

SatisfactoryLast inspected: 2022-08-10

Hazard Classification: High — This describes the potential consequences of dam failure, not the likelihood of failure.

Condition Assessment: Satisfactory — This describes the current physical condition of the dam based on the most recent inspection.

Location

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Quick Stats

NID ID
ME00203
State
Maine (ME)
Coordinates
45.63486, -68.78094
Age
92 years

Nearby Dams

External Resources

Data sourced from the National Inventory of Dams (NID). Information may not reflect the most current status of this dam. Hazard classification reflects potential consequences of failure, not the likelihood of failure or the current condition.