Bayou Dupont No 2 Reservoir Report
Nearby: Bayou Dupont No 4 Bayou Dupont No 7
Last Updated: December 9, 2025
Bayou Dupont No 2, also known as Patterson Pond, is a privately owned earth dam located in Sabine, Louisiana.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1959 by the USDA NRCS, this structure serves multiple purposes including flood risk reduction, fish and wildlife habitat, and recreation. With a dam height of 32 feet and a storage capacity of 3,165 acre-feet, the dam covers a surface area of 46 acres and drains a watershed of 5.29 square miles.
Managed by the Louisiana Department of Transportation and Development, Bayou Dupont No 2 has a significant hazard potential and is rated in fair condition as of the last inspection in July 2020. The dam features an uncontrolled spillway with a width of 10 feet and has undergone structural modifications in 2009. While the risk assessment remains at a moderate level, the structure has not been assigned a Dam Safety Action Classification (DSAC) date, suggesting ongoing monitoring and management measures are in place to ensure the safety and integrity of the dam.
For water resource and climate enthusiasts, Bayou Dupont No 2 presents an intriguing case study of a multi-purpose dam designed for flood risk reduction and environmental enhancement. The collaboration between private ownership, federal agencies, and state regulators highlights the importance of effective dam management for both safety and environmental sustainability. As efforts continue to maintain and improve the dam's condition, it serves as a reminder of the vital role that such structures play in balancing water resource management and ecological conservation in Louisiana.
Years Modified |
2009 - Structural |
Year Completed |
1959 |
Dam Length |
2845 |
Dam Height |
32 |
River Or Stream |
TR-BAYOU DUPONT |
Primary Dam Type |
Earth |
Surface Area |
46 |
Hydraulic Height |
32 |
Drainage Area |
5.29 |
Nid Storage |
3165 |
Structural Height |
37 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bayou Pierre Near Lake End
|
187cfs |
Bayou San Patricio Near Benson
|
0cfs |
Bayou Toro Near Toro
|
41cfs |
Bayou Grand Cane Near Stanley
|
5cfs |
Sabine Rv At Toledo Bd Res Nr Burkeville
|
132cfs |
Sabine Rv Nr Burkeville
|
204cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Bayou Dupont No 2