Upper
Key Takeaway
Upper is classified as low hazard in Maine. It was completed in 1900 and is 126 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 10 ft (taller than 18.4% in ME) |
| Dam Length | 160 ft |
| Dam Type | Concrete |
| Max Storage | 1.6K acre-ft |
| Normal Storage | 736 acre-ft |
| Surface Area | 233 acres |
| Drainage Area | 30 sq mi |
| Year Completed | 1900 (126 years old) |
| NID ID | ME00332 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Corinna
Local Government
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Low Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Upper?
Upper is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Upper?
Upper is owned by Corinna (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper built?
Upper was completed in 1900, making it 126 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 Upper?
Upper serves the following purposes: Hydroelectric, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper?
Upper has a dam height of 10 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 Upper last inspected?
Upper was last inspected on August 21, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.