Bayou Dupont No 22 Reservoir Report
Nearby: Lacy Lake Dam Rawls Dam
Last Updated: December 7, 2025
Bayou Dupont No 22, also known as Welch, is a privately owned dam located in Natchitoches, Louisiana, along the Little River.
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Summary
Built in 1959 by the USDA NRCS, this earth dam stands at a height of 30 feet and has a length of 885 feet, with a primary purpose of flood risk reduction. The dam has a storage capacity of 591 acre-feet and serves various purposes including fish and wildlife pond creation, flood risk reduction, and recreational activities.
Managed by the Louisiana Department of Transportation and Development, Bayou Dupont No 22 has a significant hazard potential and is categorized as having a fair condition assessment. The dam's spillway type is uncontrolled with a width of 12 feet, and it has a moderate risk level according to the latest assessment. Regular inspections are conducted every three years, with the last one taking place in July 2020. Despite its age, the dam continues to play a crucial role in managing water resources in the area and protecting against potential flooding events.
Year Completed |
1959 |
Dam Length |
885 |
Dam Height |
30 |
River Or Stream |
LITTLE RIVER |
Primary Dam Type |
Earth |
Surface Area |
34 |
Hydraulic Height |
30 |
Drainage Area |
0.84 |
Nid Storage |
591 |
Structural Height |
36 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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 22