Potacocawa Watershed Structure Y-31a-26 Dam Reservoir Report
Last Updated: December 5, 2025
The Potacocawa Watershed Structure Y-31a-26 Dam, also known as Hobgood Dam #4, is a local government-owned structure in Mississippi designed by USDA NRCS.
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Summary
Located in Carroll County, the dam serves the primary purpose of flood risk reduction along the TR-Potacocowa Creek. Constructed in 1971, the earth buttress dam stands at a height of 30 feet with a storage capacity of 277 acre-feet, covering a surface area of 13.1 acres within a drainage area of 0.48 square miles.
Managed by the Mississippi Department of Environmental Quality, the dam is regulated, permitted, inspected, and enforced by the state agency to ensure safety and compliance with regulations. The dam's hazard potential is rated as low, with a moderate risk assessment score of 3. Although the condition assessment is not rated, the dam has not been modified in recent years and lacks an Emergency Action Plan (EAP) that meets guidelines. Despite these challenges, the Potacocawa Dam remains a vital infrastructure for flood control in the region.
With its strategic location in Avalon and close oversight by state regulatory agencies, the Potacocawa Watershed Structure Y-31a-26 Dam plays a crucial role in mitigating flood risks along the TR-Potacocowa Creek. As water resource and climate enthusiasts, understanding the dam's design, purpose, and operational details provides valuable insights into how such structures contribute to water management and environmental stewardship in Mississippi.
Year Completed |
1971 |
Dam Height |
30 |
River Or Stream |
TR- POTACOCOWA CREEK |
Primary Dam Type |
Earth |
Surface Area |
13.1 |
Drainage Area |
0.48 |
Nid Storage |
277 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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-26 Dam