Holloway Dam
Key Takeaway
Holloway Dam is classified as high hazard in Michigan. It was completed in 1954 and is 72 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 | 38 ft (taller than 94% in MI) |
| Dam Length | 3,350 ft |
| Dam Type | Gravity |
| Max Storage | 29.9K acre-ft |
| Normal Storage | 15.4K acre-ft |
| Surface Area | 1,400 acres |
| Drainage Area | 526 sq mi |
| Max Discharge | 36,200 cfs |
| Year Completed | 1954 (72 years old) |
| NID ID | MI00064 |
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 Flint
Local Government
Nearby Dams
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Significant Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Holloway Dam?
Holloway 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 Holloway Dam?
Holloway Dam is owned by City of Flint (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Holloway Dam built?
Holloway Dam was completed in 1954, making it 72 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 Holloway Dam?
Holloway 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 Holloway Dam?
Holloway Dam has a dam height of 38 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 Holloway Dam last inspected?
Holloway Dam was last inspected on August 14, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.