Potacocawa Watershed Structure Y-31a-06 Dam Reservoir Report
Last Updated: December 5, 2025
Potacocawa Watershed Structure Y-31a-06 Dam, also known as Clark Dam #1, is a local government-owned earth dam located in Carroll, Mississippi.
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Summary
Built in 1965 by USDA NRCS, this dam primarily serves the purpose of flood risk reduction for the Greasy Creek. Standing at a height of 30 feet, the dam has a hydraulic height of 23 feet and a storage capacity of 1106 acre-feet, with a normal storage of 200 acre-feet.
The Potacocawa Watershed Structure Y-31a-06 Dam has a surface area of 38 acres and drains an area of 4.82 square miles. It features an uncontrolled spillway and outlet gates, with a hazard potential rated as high and a condition assessment marked as unsatisfactory as of the latest inspection in August 2020. Despite its moderate risk level, the dam poses a potential threat and requires regular monitoring and maintenance to ensure the safety of surrounding communities and the environment.
Managed by the Mississippi Department of Environmental Quality, this dam is subject to state regulation, permitting, inspection, and enforcement. With a risk assessment of moderate and a high hazard potential, the Potacocawa Watershed Structure Y-31a-06 Dam serves as a critical infrastructure for flood control in the area, highlighting the importance of effective risk management measures and emergency preparedness to safeguard against potential disasters.
Year Completed |
1965 |
Dam Height |
27 |
River Or Stream |
GREASY CREEK |
Primary Dam Type |
Earth |
Surface Area |
38 |
Hydraulic Height |
23 |
Drainage Area |
4.82 |
Nid Storage |
1106 |
Structural Height |
30 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yalobusha River At Grenada
|
3080cfs |
Batupan Bogue At Grenada
|
134cfs |
Tallahatchie River At Money
|
6080cfs |
Abiaca Creek At Cruger
|
44cfs |
Big Black River At West
|
223cfs |
Big Sunflower River At Sunflower
|
1370cfs |
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-06 Dam