Mckey Number One Dam Reservoir Report
Last Updated: December 5, 2025
Mckey Number One Dam, located in Wilkinson, Mississippi, is a private-owned structure designed by Marshall F.
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Summary
McLaughlin and completed in 2004. This earth dam, with a structural height of 37 feet and a hydraulic height of 26.63 feet, primarily serves the purpose of recreation, offering a surface area of 4.93 acres and a normal storage capacity of 35 acre-feet. Situated on the UNT of Buffalo River, the dam has a low hazard potential and was last inspected in June 2004, with a satisfactory condition assessment.
Managed by the Mississippi Department of Environmental Quality, the dam is state-regulated, permitted, inspected, and enforced. Its maximum storage capacity is 71 acre-feet, serving the local community and contributing to the drainage area of 0.13 square miles. Despite its moderate risk assessment rating, the dam meets regulatory guidelines and has not undergone significant modifications since its completion. With a spillway type of uncontrolled, the dam's maximum discharge is 26.8 cubic feet per second, ensuring efficient water management and safety measures for surrounding areas.
For water resource and climate enthusiasts, Mckey Number One Dam presents a unique case study of a privately owned recreational dam in Mississippi. With its sustainable design, satisfactory condition, and low hazard potential, the dam serves as a valuable asset for water storage, drainage, and recreational activities in the region. As climate change continues to impact water resources, it is essential to monitor and maintain infrastructure like Mckey Number One Dam to ensure its long-term resilience and effectiveness in water management.
Year Completed |
2004 |
Dam Length |
358 |
Dam Height |
29 |
River Or Stream |
UNT OF BUFFALO RIVER |
Primary Dam Type |
Earth |
Surface Area |
4.93 |
Hydraulic Height |
26.63 |
Drainage Area |
0.13 |
Nid Storage |
71 |
Structural Height |
37 |
Hazard Potential |
Low |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Buffalo River Nr Woodville
|
257cfs |
Homochitto River At Rosetta
|
2130cfs |
Amite River Near Darlington
|
267cfs |
Comite River Near Olive Branch
|
65cfs |
Tickfaw River At Liverpool
|
44cfs |
Homochitto River At Eddiceton
|
168cfs |
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.
Mckey Number One Dam