Three Prong Dam Reservoir Report
Last Updated: December 12, 2025
Three Prong Dam, located in Rankin, Mississippi, along Three Prong Creek, is a privately-owned earth dam completed in 2005 primarily for recreation purposes.
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Summary
With a height of 17 feet and a length of 750 feet, the dam boasts a normal storage capacity of 135 acre-feet and a maximum storage capacity of 350 acre-feet. Despite its low hazard potential and moderate risk assessment, the dam is regulated by the Mississippi Department of Environmental Quality and undergoes regular inspections, enforcement, and permitting to ensure its safety and compliance with state regulations.
Managed by Nolan P. Williamson PE-14059, the dam features an uncontrolled spillway and a structural height of 17 feet, with a hydraulic height of 7 feet. The surrounding area covers 27 acres with a drainage area of 1.82 square miles, providing ample space for recreational activities and wildlife habitat. Although the dam has not been rated for condition assessment, its risk management measures and emergency preparedness are critical aspects in maintaining its integrity and safeguarding the community from potential hazards.
Despite its private ownership, Three Prong Dam plays a significant role in providing recreational opportunities and regulating water flow along Three Prong Creek. With its strategic location and design, the dam serves as a vital structure in the Vicksburg District, offering a balance between human enjoyment and environmental conservation. As water resource and climate enthusiasts, understanding the importance of dams like Three Prong in water management and ecosystem preservation is essential for sustainable development and resilience in the face of changing climatic conditions.
Year Completed |
2005 |
Dam Length |
750 |
Dam Height |
12 |
River Or Stream |
THREE PRONG CREEK |
Primary Dam Type |
Earth |
Surface Area |
27 |
Hydraulic Height |
7 |
Drainage Area |
1.82 |
Nid Storage |
350 |
Structural Height |
17 |
Hazard Potential |
Low |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Hanging Moss Creek Nr Jackson
|
356cfs |
Pearl River At Jackson
|
351cfs |
Lynch Creek At Jackson
|
1100cfs |
Pearl River Nr Lena
|
408cfs |
Yockanookany River Nr Ofahoma
|
67cfs |
Big Black River Nr Bentonia
|
379cfs |
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.
Three Prong Dam
Ross Barnett Reservoir Nr Jackson
Fannin Landing Circle Rankin County