Trowbridge Dam
Key Takeaway
Trowbridge Dam is classified as high hazard in Michigan. It was completed in 1899 and is 127 years old. Its primary use is recreation. 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 | 25 ft (taller than 83.2% in MI) |
| Dam Length | 440 ft |
| Dam Type | Gravity |
| Max Storage | 660 acre-ft |
| Normal Storage | 590 acre-ft |
| Surface Area | 59 acres |
| Drainage Area | 1,522 sq mi |
| Max Discharge | 3,900 cfs |
| Year Completed | 1899 (127 years old) |
| NID ID | MI00604 |
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
MDNR Wildlife
State Government
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Low Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Trowbridge Dam?
Trowbridge Dam 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 Trowbridge Dam?
Trowbridge Dam is owned by MDNR Wildlife (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Trowbridge Dam built?
Trowbridge Dam was completed in 1899, making it 127 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 Trowbridge Dam?
Trowbridge 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 Trowbridge Dam?
Trowbridge Dam has a dam height of 25 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 Trowbridge Dam last inspected?
Trowbridge Dam was last inspected on August 18, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.