Mason Dam Reservoir Report
Last Updated: December 5, 2025
Mason Dam, located in George, Mississippi, is a privately owned structure regulated by the Mississippi Department of Environmental Quality.
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Summary
This earth dam, standing at 12 feet high and spanning 345 feet in length, was primarily built for recreational purposes along the UNT of Lyms Creek. With a storage capacity of 50 acre-feet and a surface area of 5.7 acres, the dam serves as a low-hazard structure with a moderate risk assessment rating.
Despite its modest size, Mason Dam provides a valuable recreational outlet for water resource and climate enthusiasts in the area. The uncontrolled spillway design and lack of outlet gates contribute to its simple yet effective functionality. While the dam's condition assessment remains unrated and certain administrative details are pending, the structure continues to offer a safe and enjoyable environment for outdoor activities. As a vital part of the local landscape, Mason Dam stands as a testament to the importance of water resource management and environmental stewardship in Mississippi.
Dam Length |
345 |
Dam Height |
12 |
River Or Stream |
UNT OF LYMS CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.7 |
Drainage Area |
0.2 |
Nid Storage |
50 |
Hazard Potential |
Low |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Mason Dam
The Jackson County Route 614 Bridge
To Ends Approximately 2 River Miles From The Southern Terminus Of The Study Area
Begins Approximately 1 River Mile Upstream From The U.S. Highway 98 Bridge To The Jackson County Route 614 Bridge