Messalonskee Lake
Key Takeaway
Messalonskee Lake is classified as high hazard in Maine. It was completed in 1992 and is 34 years old. Its primary use is hydroelectric. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 14 ft (taller than 45.1% in ME) |
| Dam Length | 162 ft |
| Dam Type | Concrete |
| Max Storage | 110.0K acre-ft |
| Normal Storage | 110.0K acre-ft |
| Surface Area | 3,600 acres |
| Drainage Area | 177 sq mi |
| Max Discharge | 2,400 cfs |
| Year Completed | 1992 (34 years old) |
| NID ID | ME00106 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Messalonskee Stream Hydro, LLC
Private
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Low Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Messalonskee Lake?
Messalonskee Lake is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Messalonskee Lake?
Messalonskee Lake is owned by Messalonskee Stream Hydro, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Messalonskee Lake built?
Messalonskee Lake was completed in 1992, making it 34 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Messalonskee Lake?
Messalonskee Lake serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Messalonskee Lake?
Messalonskee Lake has a dam height of 14 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Messalonskee Lake last inspected?
Messalonskee Lake was last inspected on August 30, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.