J Allison Lake Dam Reservoir Report
Last Updated: December 6, 2025
J Allison Lake Dam in Mississippi is a privately owned structure primarily used for recreation.
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Summary
The dam is classified as an earth dam with a buttress core type, standing at a height of 8 feet. It has a storage capacity of 72 acre-feet and a spillway type that is uncontrolled. The dam is regulated by the Mississippi Department of Environmental Quality and has been deemed to have a low hazard potential with a moderate risk assessment.
Located in Neshoba County, Mississippi, this dam plays a crucial role in providing recreational opportunities for the local community. Despite not being rated for its condition, the dam has undergone inspections and is subject to state regulatory oversight, including permitting and enforcement. The surrounding area benefits from the presence of J Allison Lake Dam, which contributes to the overall water resource management within the region.
Enthusiasts of water resources and climate will find J Allison Lake Dam to be a fascinating example of human-made infrastructure impacting the local landscape. With its low hazard potential and moderate risk assessment, this dam serves as both a recreational asset and a regulated structure managed by the state. Its design and purpose showcase the intersection of human activity with natural resources, highlighting the importance of responsible water management in the face of climate challenges.
Dam Height |
8 |
Nid Storage |
72 |
Hazard Potential |
Low |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pearl River At Burnside
|
1070cfs |
Pearl River At Edinburg
|
202cfs |
Chunky River Nr Chunky
|
301cfs |
Tuscolameta Creek At Walnut Grove
|
401cfs |
South Canal Tuscolameta Creek Nr Walnut Grove
|
8cfs |
Sowashee Creek At Meridian
|
16cfs |
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.
J Allison Lake Dam