Gibraltar Mine Silt Pond Dam Reservoir Report
Last Updated: December 13, 2025
The Gibraltar Mine Silt Pond Dam is a private earth dam located in Wilkinson, Georgia, with a height of 35 feet and a length of 745 feet.
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Summary
The dam has a storage capacity of 180 acre-feet and serves primarily for sediment control purposes. Despite being unregulated by the state, the dam is inspected regularly, with the last inspection conducted in January 2018, and has been categorized as having a low hazard potential and moderate risk.
With an uncontrolled spillway and outlet gates, the dam is designed with a buttress core type and sits within the Savannah District of the US Army Corps of Engineers. While the dam's condition assessment is currently listed as "Not Rated," the risk management measures and emergency action plans for the structure remain unspecified. As an essential component of the Gibraltar Mine operations, this dam plays a crucial role in managing water resources and paucity in the area, presenting opportunities for sustainability and climate adaptation in the region.
Dam Length |
745 |
Dam Height |
35 |
Primary Dam Type |
Earth |
Surface Area |
15 |
Nid Storage |
180 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Oconee River At Avant Mine
|
606cfs |
Buffalo Creek At Ga 272
|
49cfs |
Oconee River Near Oconee
|
864cfs |
Oconee River At Milledgeville
|
514cfs |
Oconee River At Dublin
|
1030cfs |
Williamson Swamp Creek At Davisboro
|
52cfs |
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.
Gibraltar Mine Silt Pond Dam