Little Black River Structure D
Key Takeaway
Little Black River Structure D is classified as high hazard in Michigan. It was completed in 1964 and is 62 years old. Its primary use is flood risk reduction. 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 | 480 ft |
| Dam Type | Earth |
| Max Storage | 313 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 4 sq mi |
| Year Completed | 1964 (62 years old) |
| NID ID | MI00066 |
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 Cheboygan
Local Government
Nearby Dams
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Low Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Little Black River Structure D?
Little Black River Structure D 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 Little Black River Structure D?
Little Black River Structure D is owned by City of Cheboygan (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Little Black River Structure D built?
Little Black River Structure D was completed in 1964, making it 62 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 Little Black River Structure D?
Little Black River Structure D serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Little Black River Structure D?
Little Black River Structure D 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 Little Black River Structure D last inspected?
Little Black River Structure D was last inspected on August 15, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.