Union Street Dam
Key Takeaway
Union Street Dam is classified as high hazard in Michigan. It was completed in 1867 and is 159 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 | 21 ft (taller than 74.1% in MI) |
| Dam Length | 250 ft |
| Dam Type | Earth |
| Max Storage | 11.2K acre-ft |
| Normal Storage | 9.0K acre-ft |
| Surface Area | 350 acres |
| Drainage Area | 276 sq mi |
| Year Completed | 1867 (159 years old) |
| NID ID | MI00511 |
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
City of Traverse City
Local Government
Nearby Dams
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Low Hazard 25 ftWysong Dam
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High Hazard 46 ftFrequently Asked Questions
What is the hazard classification of Union Street Dam?
Union Street 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 Union Street Dam?
Union Street Dam is owned by City of Traverse City (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Union Street Dam built?
Union Street Dam was completed in 1867, making it 159 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 Union Street Dam?
Union Street 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 Union Street Dam?
Union Street Dam has a dam height of 21 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 Union Street Dam last inspected?
Union Street Dam was last inspected on February 4, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.