Upper Yockanookany Ws Str No 3 Dam Reservoir Report
Last Updated: December 5, 2025
The Upper Yockanookany WS Str No 3 Dam, located in Ackerman, Mississippi, was completed in 1975 by the USDA NRCS with a primary purpose of flood risk reduction along the Yockanookany River.
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Summary
This earth dam stands at a height of 18 feet and has a storage capacity of 89 acre-feet. The dam is regulated by the Mississippi Department of Environmental Quality and undergoes regular inspections to ensure its fair condition and high hazard potential are managed effectively.
Despite its fair condition assessment, the dam poses a moderate risk and is categorized as having a high hazard potential. The dam's spillway is uncontrolled, and it is surrounded by a surface area of 6.5 acres within a drainage area of 0.15 square miles. With its location in Choctaw County, Mississippi, the Upper Yockanookany WS Str No 3 Dam serves as a critical infrastructure for flood protection in the region. Enthusiasts of water resources and climate will find this dam's design and regulatory oversight fascinating in the context of managing flood risks and ensuring public safety.
Year Completed |
1975 |
Dam Height |
18 |
River Or Stream |
YOCKANOOKANY RIVER |
Primary Dam Type |
Earth |
Surface Area |
6.5 |
Drainage Area |
0.15 |
Nid Storage |
89 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yockanookany River Nr Kosciusko
|
45cfs |
Pearl River At Burnside
|
1070cfs |
Catalpa Creek At Mayhew
|
2940cfs |
Big Black River At West
|
223cfs |
Pearl River At Edinburg
|
182cfs |
Noxubee River At Macon
|
146cfs |
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.
Upper Yockanookany Ws Str No 3 Dam