Coronet No. 4
Key Takeaway
Coronet No. 4 is classified as significant hazard in Florida. It was completed in 1930 and is 96 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 9 ft (taller than 10.3% in FL) |
| Dam Length | 8,000 ft |
| Dam Type | Earth |
| Max Storage | 1.1K acre-ft |
| Normal Storage | 900 acre-ft |
| Surface Area | 131 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 20 cfs |
| Year Completed | 1930 (96 years old) |
| Year Modified | 1950 |
| NID ID | FL12002 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
THE MOSAIC COMPANY
Private
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Significant Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Coronet No. 4?
Coronet No. 4 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Coronet No. 4?
Coronet No. 4 is owned by THE MOSAIC COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Coronet No. 4 built?
Coronet No. 4 was completed in 1930, making it 96 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 Coronet No. 4?
Coronet No. 4 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 Coronet No. 4?
Coronet No. 4 has a dam height of 9 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 Coronet No. 4 last inspected?
Coronet No. 4 was last inspected on July 24, 2003. Inspection dates indicate when a formal review occurred, not the results of that inspection.