Gravel Hill Road Dam Reservoir Report
Last Updated: December 5, 2025
Gravel Hill Road Dam in Allendale, South Carolina, is a state-regulated structure with a significant hazard potential and a fair condition assessment.
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Summary
Standing at a height of 12 feet and with a storage capacity of 313 acre-feet, this dam plays a crucial role in water resource management in the area. While the specific purposes and types of this dam are not listed, its importance in controlling water flow and storage cannot be understated.
Owned by an entity not listed, Gravel Hill Road Dam is subject to regular state inspections, permitting, and enforcement to ensure its safety and functionality. The last inspection in February 2020 revealed a fair condition, indicating that maintenance and monitoring efforts are ongoing. With a designated emergency action plan (EAP) frequency of 3, this dam is prepared for potential risks and emergencies, although specific details regarding the EAP's status and adherence to guidelines are not provided in the data.
Located at a latitude of 32.9687 and longitude of -81.3929, Gravel Hill Road Dam serves as a vital infrastructure in the South Carolina region, providing storage for water resources and managing potential risks associated with its significant hazard potential. The dam's role in water resource management and its condition assessment underscore the importance of continued monitoring and maintenance to ensure the safety and reliability of this critical structure.
Dam Height |
12 |
Nid Storage |
313 |
Hazard Potential |
Significant |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Savannah R At Burtons Ferry Br Nr Millhaven
|
7320cfs |
Brier Creek At Millhaven
|
458cfs |
Coosawhatchie River Near Hampton
|
68cfs |
Salkehatchie River Near Miley
|
242cfs |
Beaverdam Creek Near Sardis
|
7cfs |
Savannah River Near Clyo
|
6820cfs |
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.
Gravel Hill Road Dam