Bayou Dupont No 9
Key Takeaway
Bayou Dupont No 9 is classified as significant hazard in Louisiana. It was completed in 1959 and is 67 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 22 ft (taller than 69.8% in LA) |
| Dam Length | 1,440 ft |
| Dam Type | Earth |
| Max Storage | 658 acre-ft |
| Normal Storage | 215 acre-ft |
| Surface Area | 36 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 6,400 cfs |
| Year Completed | 1959 (67 years old) |
| NID ID | LA00062 |
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
Henry Sowell
Private
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Significant Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Bayou Dupont No 9?
Bayou Dupont No 9 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 Bayou Dupont No 9?
Bayou Dupont No 9 is owned by Henry Sowell (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Bayou Dupont No 9 built?
Bayou Dupont No 9 was completed in 1959, making it 67 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 Bayou Dupont No 9?
Bayou Dupont No 9 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 Bayou Dupont No 9?
Bayou Dupont No 9 has a dam height of 22 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 Bayou Dupont No 9 last inspected?
Bayou Dupont No 9 was last inspected on August 15, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.