Hillsdale Millpond Dam
Key Takeaway
Hillsdale Millpond Dam is classified as significant hazard in Michigan. It was completed in 1837 and is 189 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 14 ft (taller than 44.8% in MI) |
| Dam Length | 307 ft |
| Dam Type | Earth |
| Max Storage | 100 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 9 sq mi |
| Max Discharge | 730 cfs |
| Year Completed | 1837 (189 years old) |
| NID ID | MI00089 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
City of Hillsdale
Local Government
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Low Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Hillsdale Millpond Dam?
Hillsdale Millpond Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Hillsdale Millpond Dam?
Hillsdale Millpond Dam is owned by City of Hillsdale (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hillsdale Millpond Dam built?
Hillsdale Millpond Dam was completed in 1837, making it 189 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 Hillsdale Millpond Dam?
Hillsdale 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 Hillsdale Millpond Dam?
Hillsdale Millpond Dam has a dam height of 14 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 Hillsdale Millpond Dam last inspected?
Hillsdale Millpond Dam was last inspected on October 19, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.