Potacocawa Watershed Structure Y-31a-15 Dam Reservoir Report
Last Updated: December 5, 2025
Potacocawa Watershed Structure Y-31a-15 Dam, also known as Blair Dam, is a vital piece of infrastructure located in Carroll County, Mississippi.
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Summary
Managed by the local government, this earth dam was designed by USDA NRCS and serves primarily for flood risk reduction along the TR- Potacocowa Creek. Completed in 1967, the dam stands at a height of 28 feet and has a storage capacity of 320 acre-feet.
With a low hazard potential and a moderate risk assessment, the Potacocawa Watershed Structure Y-31a-15 Dam plays a crucial role in managing water resources in the area. It is regulated by the Mississippi Department of Environmental Quality and undergoes regular inspections, enforcement, and permitting to ensure its safety and effectiveness in flood control. The dam's spillway type is uncontrolled, and it features an uncontrolled outlet gate.
Overall, the Potacocawa Watershed Structure Y-31a-15 Dam is an important infrastructure asset in the region, providing essential flood risk reduction benefits and serving as a key component in the management of water resources along the TR- Potacocowa Creek. Its design, construction, and maintenance reflect a commitment to safeguarding the community and the surrounding environment from potential water-related hazards.
Year Completed |
1967 |
Dam Height |
28 |
River Or Stream |
TR- POTACOCOWA CREEK |
Primary Dam Type |
Earth |
Surface Area |
10.5 |
Drainage Area |
0.85 |
Nid Storage |
320 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Batupan Bogue At Grenada
|
134cfs |
Yalobusha River At Grenada
|
3080cfs |
Tallahatchie River At Money
|
6080cfs |
Abiaca Creek At Cruger
|
44cfs |
Big Black River At West
|
223cfs |
Otoucalofa Creek Canal Nr Water Valley
|
25cfs |
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-15 Dam