Bayou Dupont No 4
Bayou Dupont No 4 is an earth dam located in Sabine Parish, Louisiana, built in 1961. It carries a Significant hazard potential classification and has a poor condition assessment.
About Bayou Dupont No 4
The primary purpose of Bayou Dupont No 4 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 J. Edwards;p.windham;s.rains (private). It impounds the Tr-bayou Dupont near Robeline.
The dam stands 27 feet tall and stretches 1,120 feet across, creates a reservoir covering 39 acres, has a maximum storage capacity of 647 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1961, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 08/15/2023.
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Location
| State | Louisiana |
| County | Sabine |
| Nearest City | Robeline |
| River/Stream | Tr-bayou Dupont |
| Coordinates | 31.69200, -93.40890 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 23 ft |
| Dam Length | 1,120 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 647 acre-ft |
| Max Storage | 647 acre-ft |
| Normal Storage | 249 acre-ft |
| Surface Area | 39 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,060 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | J. Edwards;P.Windham;S.Rains |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 08/15/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | LA00033 |
| Federal ID | LA00033 |
| More Info | State Dam Safety Program |