Keyes Branch Mine Dam
Key Takeaway
Keyes Branch Mine Dam is classified as high hazard in Missouri. It was completed in 1979 and is 47 years old. Its primary use is tailings. 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 | 77 ft (taller than 98.9% in MO) |
| Dam Length | 1,700 ft |
| Dam Type | Other |
| Max Storage | 1.2K acre-ft |
| Normal Storage | 1.2K acre-ft |
| Surface Area | 61 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,323 cfs |
| Year Completed | 1979 (47 years old) |
| Year Modified | 1986 |
| NID ID | MO30386 |
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
Private
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High Hazard 72 ftFrequently Asked Questions
What is the hazard classification of Keyes Branch Mine Dam?
Keyes Branch Mine 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 Keyes Branch Mine Dam?
Keyes Branch Mine Dam is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Keyes Branch Mine Dam built?
Keyes Branch Mine Dam was completed in 1979, making it 47 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 Keyes Branch Mine Dam?
Keyes Branch Mine Dam serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Keyes Branch Mine Dam?
Keyes Branch Mine Dam has a dam height of 77 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 Keyes Branch Mine Dam last inspected?
Keyes Branch Mine Dam was last inspected on February 7, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.