Potacocawa Watershed Structure Y-31a-02 Dam Reservoir Report
Last Updated: December 5, 2025
Potacocawa Watershed Structure Y-31a-02 Dam, also known as Kosko Dam #1, is a local government-owned structure located in Carroll, Mississippi.
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Summary
Designed by USDA NRCS and completed in 1962, this earth dam stands at a height of 32 feet and has a storage capacity of 781 acre-feet. Its primary purpose is flood risk reduction, making it a crucial asset in the management of water resources in the area.
Managed by the Mississippi Department of Environmental Quality, this dam is state-regulated and undergoes regular inspections to ensure compliance with safety standards. With a low hazard potential and a moderate risk assessment score, the structure is considered to be in good condition and poses minimal danger to the surrounding community. Despite being uncontrolled, the spillway and outlet gates are designed to handle potential overflow effectively, further reducing the risk of flooding in the area.
Located on Kirby Branch within the Vicksburg District, Potacocawa Watershed Structure Y-31a-02 Dam plays a vital role in protecting the local environment and community from the impacts of extreme weather events. With its strategic design and efficient management, this dam serves as a valuable asset in the sustainable management of water resources and climate adaptation efforts in the region.
Year Completed |
1962 |
Dam Height |
32 |
River Or Stream |
KIRBY BRANCH |
Primary Dam Type |
Earth |
Surface Area |
38 |
Drainage Area |
2.14 |
Nid Storage |
781 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Tallahatchie River At Money
|
6080cfs |
Yalobusha River At Grenada
|
3080cfs |
Batupan Bogue At Grenada
|
134cfs |
Abiaca Creek At Cruger
|
44cfs |
Big Sunflower River At Sunflower
|
1370cfs |
Big Black River At West
|
223cfs |
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.
Potacocawa Watershed Structure Y-31a-02 Dam