Great Moose Lake
Key Takeaway
Great Moose Lake is classified as significant hazard in Maine. It was completed in 1924 and is 102 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 16 ft (taller than 59.6% in ME) |
| Dam Length | 350 ft |
| Dam Type | Concrete |
| Max Storage | 26.9K acre-ft |
| Normal Storage | 23.5K acre-ft |
| Surface Area | 3,584 acres |
| Drainage Area | 228 sq mi |
| Year Completed | 1924 (102 years old) |
| Year Modified | 1991 |
| NID ID | ME00112 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Hartland
Local Government
Nearby Dams
Indian Pond
Somerset, ME
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Low Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Great Moose Lake?
Great Moose Lake is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Great Moose Lake?
Great Moose Lake is owned by Hartland (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Great Moose Lake built?
Great Moose Lake was completed in 1924, making it 102 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 Great Moose Lake?
Great Moose Lake serves the following purposes: Flood Risk Reduction, Fire Protection, Stock, Or Small Fish Pond, Fish And Wildlife Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Great Moose Lake?
Great Moose Lake has a dam height of 16 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 Great Moose Lake last inspected?
Great Moose Lake was last inspected on December 10, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.