Cypress Bayou No 1
Key Takeaway
Cypress Bayou No 1 is classified as high hazard in Louisiana. It was completed in 1959 and is 67 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 | 41 ft (taller than 97.3% in LA) |
| Dam Length | 2,740 ft |
| Dam Type | Earth |
| Max Storage | 2.4K acre-ft |
| Normal Storage | 815 acre-ft |
| Surface Area | 120 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 4,500 cfs |
| Year Completed | 1959 (67 years old) |
| NID ID | LA00345 |
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
Town of Plain Dealing
Local Government
Nearby Dams
Cypress Bayou No 2
Bossier, LA
High Hazard 34 ftCypress Bayou No 3
Bossier, LA
High Hazard 28 ftHuddleston Pond
Bossier, LA
Low Hazard 15 ftRay Lake
Bossier, LA
Low Hazard 16 ftOllie Holm Lake
Bossier, LA
Low Hazard 24 ftMckinney Pond
Caddo, LA
Low Hazard 12 ftHosston Lake
Caddo, LA
Low Hazard 13 ftFuller Dam
Caddo, LA
Low Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Cypress Bayou No 1?
Cypress Bayou No 1 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 Cypress Bayou No 1?
Cypress Bayou No 1 is owned by Town of Plain Dealing (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cypress Bayou No 1 built?
Cypress Bayou No 1 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 Cypress Bayou No 1?
Cypress Bayou No 1 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 Cypress Bayou No 1?
Cypress Bayou No 1 has a dam height of 41 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 Cypress Bayou No 1 last inspected?
Cypress Bayou No 1 was last inspected on July 31, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.