Mcgrady Dam Reservoir Report
Last Updated: December 5, 2025
Mcgrady Dam, nestled in Colleton, South Carolina, stands as a critical water resource structure on Black Creek.
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Summary
This private dam, with a buttress core type and a height of 10 feet, boasts a storage capacity of 758 acre-feet, providing essential water storage for the region. With its high hazard potential and unsatisfactory condition assessment, Mcgrady Dam is closely regulated by the South Carolina Department of Health and Environmental Control, ensuring its safety and functionality.
Despite its crucial role in water management, Mcgrady Dam faces challenges, evident in its high hazard rating and unsatisfactory condition assessment. Regular inspections and enforcement are in place to address these concerns, emphasizing the importance of maintaining the dam's integrity for the safety of surrounding communities and the environment. The dam's location on Black Creek highlights its significance in mitigating flood risks and ensuring a stable water supply for the region.
As climate change impacts water resources and infrastructure, the management and upkeep of dams like Mcgrady Dam become increasingly vital. With a moderate risk assessment and a history of modifications to enhance safety, Mcgrady Dam remains a key player in water resource management in South Carolina. As enthusiasts of water resources and climate resilience, understanding the role and condition of structures like Mcgrady Dam is essential for ensuring sustainable water management practices in the face of evolving environmental challenges.
Dam Height |
10 |
River Or Stream |
BLACK CREEK |
Surface Area |
64 |
Nid Storage |
758 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Salkehatchie River Near Miley
|
242cfs |
Coosawhatchie River Near Hampton
|
68cfs |
Edisto River Nr Givhans
|
1100cfs |
Savannah River Near Clyo
|
6820cfs |
South Fork Edisto River Near Bamberg
|
785cfs |
South Fork Edisto River Near Cope
|
736cfs |
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.
Mcgrady Dam