Impoundment No.1
Key Takeaway
Impoundment No.1 is classified as high hazard in Michigan. Its primary use is tailings. 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 | 30 ft (taller than 89.2% in MI) |
| Dam Length | 7,400 ft |
| Dam Type | Earth |
| Max Storage | 3.7K acre-ft |
| NID ID | MI83470 |
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
MICHIGAN LIMESTONE OP. LTD
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Impoundment No.1?
Impoundment No.1 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 Impoundment No.1?
Impoundment No.1 is owned by MICHIGAN LIMESTONE OP. LTD (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of Impoundment No.1?
Impoundment No.1 serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Impoundment No.1?
Impoundment No.1 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 Impoundment No.1 last inspected?
Impoundment No.1 was last inspected on March 15, 2010. Inspection dates indicate when a formal review occurred, not the results of that inspection.