Cypress Bayou No 3
Cypress Bayou No 3 is an earth dam located in Bossier Parish, Louisiana, built in 1959. It carries a High hazard potential classification and has a fair condition assessment.
About Cypress Bayou No 3
The primary purpose of Cypress Bayou No 3 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Town Of Plain Dealing (local government). It impounds the Tr-little Cyp. Bayou near Plain Dealing.
The dam stands 32 feet tall and stretches 1,815 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 405 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1959, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 08/09/2024.
At 32 feet, this dam is taller than 76% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Louisiana dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Louisiana |
| County | Bossier |
| Nearest City | Plain Dealing |
| River/Stream | Tr-little Cyp. Bayou |
| Coordinates | 32.91570, -93.69974 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 28 ft |
| Dam Length | 1,815 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 405 acre-ft |
| Max Storage | 405 acre-ft |
| Normal Storage | 90 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 3,200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Town of Plain Dealing |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 08/09/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | LA00040 |
| Federal ID | LA00040 |
| More Info | State Dam Safety Program |