James Duncan Lake Dam Reservoir Report
Nearby: Ms04468 Lake Dam J G House Lake Dam
Last Updated: December 6, 2025
James Duncan Lake Dam in Madison, Mississippi is a privately owned structure managed by the Mississippi Department of Environmental Quality.
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Summary
The dam, primarily designed for recreational purposes, stands at a height of 10 feet and has a storage capacity of 100 acre-feet. Its low hazard potential and moderate risk assessment make it a relatively safe structure within the Vicksburg District.
Although the dam's condition is currently not rated, it is subject to state regulation, permitting, inspection, and enforcement to ensure its safety and compliance with environmental standards. Despite being an earth dam with a buttress core type, the dam's uncontrolled spillway and lack of associated structures or outlet gates suggest a simpler design. With its location in a designated risk zone and no emergency action plan in place, there is a need for continued monitoring and risk management to safeguard the surrounding area and water resources.
Dam Height |
10 |
Nid Storage |
100 |
Hazard Potential |
Low |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yockanookany River Nr Ofahoma
|
96cfs |
Pearl River Nr Lena
|
532cfs |
Big Black River Nr Bentonia
|
502cfs |
Harland Creek Nr Howard
|
3340cfs |
Pearl River Nr Carthage
|
277cfs |
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.
James Duncan Lake Dam