Jonesville Millpond Dam
Key Takeaway
Jonesville Millpond Dam is classified as low hazard in Michigan. It was completed in 1872 and is 154 years old. Its primary use is recreation.
Physical Details
| Dam Height | 9 ft (taller than 14.1% in MI) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 170 acre-ft |
| Normal Storage | 90 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 63 sq mi |
| Max Discharge | 650 cfs |
| Year Completed | 1872 (154 years old) |
| NID ID | MI00712 |
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
Jack Mosley
Private
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Low Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Jonesville Millpond Dam?
Jonesville Millpond Dam 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 Jonesville Millpond Dam?
Jonesville Millpond Dam is owned by Jack Mosley (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Jonesville Millpond Dam built?
Jonesville Millpond Dam was completed in 1872, making it 154 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 Jonesville Millpond Dam?
Jonesville Millpond Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Jonesville Millpond Dam?
Jonesville Millpond Dam has a dam height of 9 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 Jonesville Millpond Dam last inspected?
Jonesville Millpond Dam was last inspected on September 22, 1994. Inspection dates indicate when a formal review occurred, not the results of that inspection.