J A Steen Lake Dam Reservoir Report
Last Updated: December 6, 2025
J A Steen Lake Dam in Mississippi is a privately owned structure primarily used for recreation.
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Summary
The dam, classified as an earth dam with a buttress core type, stands at a height of 8 feet and has a storage capacity of 90 acre-feet. The dam is regulated by the Mississippi Department of Environmental Quality and is subject to state inspection and enforcement, ensuring its safe operation.
With a low hazard potential and a moderate risk assessment rating, J A Steen Lake Dam poses minimal risk to the surrounding area. While the dam has not been rated for its condition, it meets state guidelines for emergency action plans (EAP) and has not been updated in recent years. The presence of uncontrolled spillways and a lack of outlet gates indicate a simplistic design focused on recreational use rather than flood control or water management.
Located in Copiah, Mississippi, J A Steen Lake Dam offers opportunities for outdoor activities in a scenic setting. Water resource and climate enthusiasts interested in the intersection of human infrastructure and environmental conservation may find this dam an intriguing case study of a privately owned recreational structure in a regulated environment.
Dam Height |
8 |
Nid Storage |
90 |
Hazard Potential |
Low |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pearl River Nr Rockport
|
1230cfs |
Strong River At D`Lo
|
286cfs |
Pearl River At Jackson
|
1180cfs |
Lynch Creek At Jackson
|
1100cfs |
Pearl River Nr Monticello
|
1640cfs |
Hanging Moss Creek Nr Jackson
|
356cfs |
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 A Steen Lake Dam