Bayou Dupont No 2 is an earth dam located in Sabine Parish, Louisiana, built in 1959. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 37 ft37 ft tall and 2,845 ft long, taller than 83% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Bayou Dupont No 2
The primary purpose of Bayou Dupont No 2 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 Richard Brian Tannehill (private). It impounds the Tr-bayou Dupont near Robeline.
The dam stands 37 feet tall and stretches 2,845 feet across, creates a reservoir covering 46 acres, has a maximum storage capacity of 3,165 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1959, 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 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 08/08/2023.
At 37 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Louisiana |
| County | Sabine |
| Nearest City | Robeline |
| River/Stream | Tr-bayou Dupont |
| Coordinates | 31.69800, -93.42940 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 32 ft |
| Dam Length | 2,845 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 3,165 acre-ft |
| Max Storage | 3,165 acre-ft |
| Normal Storage | 135 acre-ft |
| Surface Area | 46 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 4,440 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Richard Brian Tannehill |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 08/08/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | LA00034 |
| Federal ID | LA00034 |
| More Info | State Dam Safety Program |