Persimmon Creek Structure Y-21-30 Dam Reservoir Report
Last Updated: December 6, 2025
Persimmon Creek Structure Y-21-30 Dam, also known as Blount Dam, serves as a vital piece of infrastructure in Calhoun, Mississippi, designed by USDA NRCS to primarily address flood risk reduction along the TR- Brushy Creek.
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Summary
Completed in 1957, this earth dam stands at a height of 21 feet and has a storage capacity of 387 acre-feet. Despite its low hazard potential, the dam is regulated by the Mississippi Department of Environmental Quality and undergoes regular inspections to ensure its structural integrity.
Situated in the Vicksburg District, Persimmon Creek Structure Y-21-30 Dam plays a crucial role in managing water resources in the region, especially during periods of heavy rainfall or potential flooding events. With a spillway type categorized as 'Uncontrolled' and uncontrolled outlet gates, the dam has been classified with a moderate risk level of 3. As a locally-owned structure, it highlights the collaborative efforts between the local government and state regulatory agencies in safeguarding the surrounding communities from potential water-related hazards.
Despite its age, Persimmon Creek Structure Y-21-30 Dam continues to provide essential flood risk reduction services to the residents of Ellard and beyond. As climate change impacts water resources and extreme weather events become more frequent, the maintenance and monitoring of such dams are crucial to ensure their continued effectiveness in protecting lives and property. With its strategic location and design elements, this dam stands as a testament to the importance of sustainable water resource management and climate resilience in the face of evolving environmental challenges.
Year Completed |
1957 |
Dam Height |
21 |
River Or Stream |
TR- BRUSHY CREEK |
Primary Dam Type |
Earth |
Drainage Area |
0.8 |
Nid Storage |
387 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Skuna River At Bruce
|
30cfs |
Yocona River Nr Oxford
|
96cfs |
Otoucalofa Creek Canal Nr Water Valley
|
25cfs |
Little Tallahatchie River At Etta
|
156cfs |
Batupan Bogue At Grenada
|
134cfs |
Yalobusha River At Grenada
|
3080cfs |
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.
Persimmon Creek Structure Y-21-30 Dam