Potacocawa Watershed Structure Y-31a-04 Dam Reservoir Report
Last Updated: December 5, 2025
The Potacocawa Watershed Structure Y-31a-04 Dam, also known as Hammonds Dam, is a vital flood risk reduction infrastructure located in Carroll, Mississippi.
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Summary
Constructed in 1962 by the USDA NRCS, this earth dam spans 605 feet in length and stands at a height of 27 feet, with a storage capacity of 497 acre-feet. Situated on the Potacocawa Creek, the dam plays a crucial role in protecting the surrounding area from potential flooding events.
Despite its importance in flood risk management, the dam is currently assessed to be in poor condition with a high hazard potential. The last inspection in August 2020 revealed a need for improvement in maintenance and safety measures. With a moderate risk assessment rating of 3, there is an urgent need for proactive risk management measures to ensure the dam's structural integrity and the safety of the community it serves. As a focal point for water resource and climate enthusiasts, the Potacocawa Watershed Structure Y-31a-04 Dam serves as a reminder of the ongoing challenges and responsibilities associated with managing our water infrastructure in the face of changing environmental conditions.
Year Completed |
1962 |
Dam Length |
605 |
Dam Height |
27 |
River Or Stream |
POTACOCAWA CREEK |
Primary Dam Type |
Earth |
Surface Area |
20 |
Drainage Area |
1.3 |
Nid Storage |
497 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
27 |
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-04 Dam