John Berry Lake Dam Reservoir Report
Nearby: Grover Brown Lake Dam Krouss Lake Dam
Last Updated: December 5, 2025
John Berry Lake Dam in Mississippi is a privately-owned structure regulated by the Mississippi Department of Environmental Quality.
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Summary
This earth dam, with a height of 12 feet and a storage capacity of 70 acre-feet, was primarily built for recreational purposes. Although the dam has a low hazard potential and is currently rated as not assessed, it is subject to state inspections, enforcement, and permitting to ensure its safety and compliance with regulations.
Located in Jefferson County, Mississippi, the John Berry Lake Dam is managed by its private owners with oversight from state regulatory agencies. Despite its moderate risk assessment level, the dam has no associated structures or outlet gates. The spillway type is uncontrolled, and the dam is not operated by the US Army Corps of Engineers. Water resource and climate enthusiasts may find this dam an interesting case study in private dam ownership and regulation, as well as the balance between recreational use and safety considerations in dam construction and management.
Dam Height |
12 |
Nid Storage |
70 |
Hazard Potential |
Low |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bayou Pierre Nr Willows
|
444cfs |
Homochitto River At Eddiceton
|
168cfs |
Homochitto River At Rosetta
|
2130cfs |
Buffalo River Nr Woodville
|
257cfs |
Mississippi River At Vicksburg
|
329000cfs |
Big Black River Nr Bovina
|
677cfs |
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.
John Berry Lake Dam