Jeff Johnson Lake Dam Reservoir Report
Nearby: Cartwright Pond Dam Ed Honeycutt Dam
Last Updated: December 6, 2025
Jeff Johnson Lake Dam, located in Prentiss, Mississippi, is a privately owned structure managed by the Mississippi Department of Environmental Quality.
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Summary
This earth-type dam, with a height of 18 feet and a structural height of 20 feet, serves primarily for recreation purposes, offering a serene lake setting for water and climate enthusiasts to enjoy. With a normal storage capacity of 28.5 acre-feet and a maximum discharge of 334.4 cubic feet per second, the dam provides essential water resource management for the local area.
The dam's low hazard potential and moderate risk assessment make it a relatively safe structure, although its condition has not been officially rated. Despite not having been inspected recently, the dam is regulated and permitted by the state, ensuring that it meets safety standards. While the dam may not be high-risk, it plays a crucial role in the surrounding ecosystem, with a drainage area of 0.1 square miles and a surface area of 6 acres, supporting local wildlife and vegetation.
Overall, Jeff Johnson Lake Dam stands as a vital resource in Mississippi, offering both recreational opportunities and important water management functions. Its presence not only enhances the natural landscape but also contributes to the overall resilience of the region in the face of changing climatic conditions. For those interested in water resources and climate adaptation, this dam serves as a focal point for understanding the intersection of human infrastructure and environmental sustainability.
Dam Length |
340 |
Dam Height |
18 |
River Or Stream |
UNNAMED |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
13.9 |
Drainage Area |
0.1 |
Nid Storage |
59.6 |
Structural Height |
20 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Twentymile Creek Nr Guntown
|
23cfs |
Red Bud Creek Nr Moores Mill
|
12cfs |
Hatchie River Near Walnut
|
153cfs |
Bear Creek At Bishop
|
4330cfs |
Cummings Creek Nr Fulton
|
43cfs |
Tombigbee River Nr Fulton
|
180cfs |
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.
Jeff Johnson Lake Dam