Noralyn N-9
Key Takeaway
Noralyn N-9 is classified as low hazard in Florida. It was completed in 1961 and is 65 years old. Its primary use is debris control.
Physical Details
| Dam Height | 40 ft (taller than 79.9% in FL) |
| Dam Length | 23,860 ft |
| Dam Type | Earth |
| Max Storage | 25.1K acre-ft |
| Normal Storage | 25.1K acre-ft |
| Surface Area | 1,214 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 20 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | FL00193 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
THE MOSAIC COMPANY
Private
Nearby Dams
Noralyn N-10
Polk, FL
Low Hazard 40 ftNoralyn N-13
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Significant Hazard 25 ftNoralyn N-6
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Significant Hazard 25 ftNoralyn N-8
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Significant Hazard 24 ftNoralyn N-4
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Significant Hazard 36 ftNoralyn N-13
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Low Hazard 40 ftNoralyn N-11b
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Significant Hazard 14 ftNoralyn N-11a
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Significant Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Noralyn N-9?
Noralyn N-9 is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Noralyn N-9?
Noralyn N-9 is owned by THE MOSAIC COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Noralyn N-9 built?
Noralyn N-9 was completed in 1961, making it 65 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 Noralyn N-9?
Noralyn N-9 serves the following purposes: Debris Control. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Noralyn N-9?
Noralyn N-9 has a dam height of 40 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.