Alligator Lake Reservoir Report
Nearby: Robert Jarrell Dam 5l Ranch Pond
Last Updated: December 20, 2025
Alligator Lake, located in Leesville, Louisiana, is a federally-owned water resource managed by the US Army.
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Summary
Built in 1955 with a primary purpose of recreation, this earth dam spans 1000 feet in length and stands at a height of 34 feet. The lake has a storage capacity of 140 acre-feet and covers a surface area of 14 acres, drawing water from Liberty Creek.
Maintained by the US Army, Alligator Lake boasts a spillway type of 'Uncontrolled' with a spillway width of 90 feet. The dam has a low hazard potential and a moderate risk assessment level, with inspection frequency set at 4 times annually. While the condition assessment is not available, the emergency action plan (EAP) was last revised in 2008, ensuring preparedness for any potential risks associated with the dam.
Water and climate enthusiasts visiting Alligator Lake can enjoy its recreational amenities while appreciating the careful management and regulation by the US Army to ensure the safety and sustainability of this valuable water resource in Vernon, Louisiana. With its rich history and picturesque landscape, Alligator Lake stands as a testament to the importance of responsible water resource management in the face of changing environmental conditions.
Year Completed |
1955 |
Dam Length |
1000 |
Dam Height |
34 |
River Or Stream |
Liberty Creek |
Primary Dam Type |
Earth |
Surface Area |
14 |
Hydraulic Height |
29 |
Drainage Area |
1 |
Nid Storage |
140 |
Structural Height |
32 |
Outlet Gates |
Valve |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bayou Anacoco Near Rosepine
|
124cfs |
Sabine Rv Nr Burkeville
|
302cfs |
Bundick Ck Nr De Ridder
|
70cfs |
Bayou Toro Near Toro
|
35cfs |
Sabine Rv At Toledo Bd Res Nr Burkeville
|
164cfs |
Calcasieu River Nr Glenmora
|
108cfs |
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.
Alligator Lake