Johnson Brothers Pond Dam Reservoir Report
Last Updated: December 5, 2025
Johnson Brothers Pond Dam, located in Alma, Georgia, was completed in 1954 and serves multiple purposes including fire protection and as a stock or small fish pond.
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Summary
This private dam, with a height of 12.5 feet and a length of 600 feet, has a storage capacity of 117 acre-feet and covers a surface area of 15 acres. The dam is classified as an earth dam with a buttress core type and an uncontrolled spillway.
Although the dam is not regulated by the state, it does undergo regular inspections, with the last one conducted in July 2016. With a low hazard potential and a moderate risk assessment, Johnson Brothers Pond Dam poses a manageable risk to the surrounding area. The dam's risk management measures and emergency action plan status are currently not rated, highlighting areas that may require further attention to enhance safety and resilience in the face of potential climate-related challenges. Water resource and climate enthusiasts can appreciate the unique blend of functions that this dam serves and the ongoing efforts to ensure its safety and effectiveness.
Year Completed |
1954 |
Dam Length |
600 |
Dam Height |
12.5 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
15 |
Drainage Area |
600 |
Nid Storage |
117 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Satilla River Near Offerman
|
2cfs |
Satilla River Near Waycross
|
45cfs |
Altamaha River Near Baxley
|
3480cfs |
Ocmulgee River At Lumber City
|
2080cfs |
Altamaha River At Doctortown
|
3110cfs |
Ohoopee River Near Reidsville
|
105cfs |
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.
Johnson Brothers Pond Dam