Mercer Pond Dam Reservoir Report
Last Updated: December 6, 2025
Mercer Pond Dam, located in Tattnall, Georgia, is a privately owned Earth dam with a height of 10.5 feet and a storage capacity of 129 acre-feet.
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Summary
The dam, completed in an unspecified year, serves a primary purpose that is not specified, and its hazard potential is rated as low. Despite its low hazard potential, the risk assessment for Mercer Pond Dam is moderate, with a DSAC (Dam Safety Action Classification) not assigned. The dam is not regulated by the state but is subject to inspections every five years, with the last inspection conducted in June 2010.
Situated in the Savannah District, Mercer Pond Dam's spillway type is uncontrolled, with uncontrolled outlet gates. The dam holds a normal storage capacity of 84 acre-feet and covers a surface area of 21 acres, servicing a drainage area of 410 square miles. Although the dam is not currently rated for its condition, it is in operational status. With its moderate risk assessment, water resource and climate enthusiasts may find Mercer Pond Dam an intriguing subject for further study and monitoring to ensure its ongoing safety and functionality within the region's water infrastructure.
Dam Length |
685 |
Dam Height |
10.5 |
Primary Dam Type |
Earth |
Surface Area |
21 |
Drainage Area |
410 |
Nid Storage |
129 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Canoochee River Near Claxton
|
16cfs |
Ohoopee River Near Reidsville
|
105cfs |
Altamaha River Near Baxley
|
3480cfs |
Ogeechee River At Rocky Ford Rd
|
557cfs |
Oconee River Near Mount Vernon
|
2230cfs |
Black Creek Near Blitchton
|
9cfs |
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.
Mercer Pond Dam