Wyman
Key Takeaway
Wyman is classified as high hazard in Maine. It was completed in 1930 and is 96 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 | 155 ft (taller than 99.7% in ME) |
| Dam Length | 3,054 ft |
| Dam Type | Earth |
| Max Storage | 208.9K acre-ft |
| Normal Storage | 208.9K acre-ft |
| Surface Area | 3,240 acres |
| Drainage Area | 2,619 sq mi |
| Max Discharge | 59,630 cfs |
| Year Completed | 1930 (96 years old) |
| NID ID | ME00089 |
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
Brookfield Renewable Power LLC NYRO
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Wyman?
Wyman 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 Wyman?
Wyman is owned by Brookfield Renewable Power LLC NYRO (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Wyman built?
Wyman was completed in 1930, making it 96 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 Wyman?
Wyman 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 Wyman?
Wyman has a dam height of 155 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 Wyman last inspected?
Wyman was last inspected on September 28, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.