Colby Mills
Key Takeaway
Colby Mills is classified as low hazard in Maine. It was completed in 1825 and is 201 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 16 ft (taller than 59.6% in ME) |
| Dam Length | 160 ft |
| Dam Type | Concrete |
| Max Storage | 1.9K acre-ft |
| Normal Storage | 1.2K acre-ft |
| Surface Area | 193 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1825 (201 years old) |
| NID ID | ME00261 |
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
Betty Wilson
Private
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Low Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Colby Mills?
Colby Mills 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 Colby Mills?
Colby Mills is owned by Betty Wilson (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Colby Mills built?
Colby Mills was completed in 1825, making it 201 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 Colby Mills?
Colby Mills serves the following purposes: Hydroelectric, Other, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Colby Mills?
Colby Mills 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 Colby Mills last inspected?
Colby Mills was last inspected on March 13, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.