Hiram
Key Takeaway
Hiram is classified as low hazard in Maine. It was completed in 1917 and is 109 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 30 ft (taller than 88.4% in ME) |
| Dam Length | 432 ft |
| Dam Type | Concrete |
| Max Storage | 1.0K acre-ft |
| Normal Storage | 1.0K acre-ft |
| Surface Area | 255 acres |
| Drainage Area | 832 sq mi |
| Max Discharge | 16,475 cfs |
| Year Completed | 1917 (109 years old) |
| NID ID | ME00037 |
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
Brookfield Renewable Power LLC NYRO
Private
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Low Hazard 9 ftFrequently Asked Questions
What is the hazard classification of Hiram?
Hiram 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 Hiram?
Hiram is owned by Brookfield Renewable Power LLC NYRO (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hiram built?
Hiram was completed in 1917, making it 109 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 Hiram?
Hiram serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hiram?
Hiram has a dam height of 30 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 Hiram last inspected?
Hiram was last inspected on May 16, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.