Lower Mill Dam
Key Takeaway
Lower Mill Dam is classified as significant hazard in Michigan. It was completed in 1840 and is 186 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 17 ft (taller than 61.1% in MI) |
| Dam Length | 320 ft |
| Dam Type | Earth |
| Max Storage | 225 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 69 sq mi |
| Max Discharge | 3,800 cfs |
| Year Completed | 1840 (186 years old) |
| NID ID | MI00032 |
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 Dowagiac
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Lower Mill Dam?
Lower Mill 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 Lower Mill Dam?
Lower Mill Dam is owned by City of Dowagiac (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lower Mill Dam built?
Lower Mill Dam was completed in 1840, making it 186 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 Lower Mill Dam?
Lower Mill 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 Lower Mill Dam?
Lower Mill Dam has a dam height of 17 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 Lower Mill Dam last inspected?
Lower Mill Dam was last inspected on October 28, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.