Little River Closure Dam Reservoir Report
Last Updated: December 21, 2025
The Little River Closure Dam, located in Jonesville, Louisiana, was constructed in 1972 primarily for navigation on the Black River and recreation at Catahoula Lake.
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Summary
With a height of 55 feet and a length of 700 feet, the dam serves as a vital structure for regulating water flow and managing the risk of flooding in the area. While the dam's purpose does not directly involve flood risk management, its potential failure could impact Catahoula Lake and the Black River, necessitating close monitoring and risk assessment.
US Army Corps of Engineers (USACE) has classified the risk of failure associated with the Little River Closure Dam as very low. Despite its strong construction, the dam is periodically assessed for any potential concerns that could lead to failure during rare events. USACE has implemented risk management measures such as replacing deteriorated joint filler and developing an Emergency Action Plan to address any vulnerabilities and ensure timely response in case of an emergency. Close coordination with various agencies and regular inspections contribute to the overall safety and reliability of the dam.
In the event of a breach or failure of the Little River Closure Dam, flood waters would be contained within the banks of the Little River and managed through the Catahoula Lake Control Structure. While the dam's failure would mainly result in the destruction of the structure itself, minimal impacts on life and navigation benefits are anticipated. USACE's proactive approach to risk management and emergency preparedness underscores their commitment to safeguarding the surrounding communities and water resources.
Year Completed |
1972 |
Dam Length |
700 |
River Or Stream |
LITTLE RIVER |
Primary Dam Type |
Earth |
Surface Area |
7120 |
Hydraulic Height |
55 |
Drainage Area |
2921 |
Nid Storage |
149300 |
Structural Height |
55 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
55 |
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.
Little River Closure Dam