Macedonia Dam Reservoir Report

Last Updated: December 5, 2025

Macedonia Dam, located in Union, South Carolina, is a Federal-owned structure managed by the Forest Service.


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Summary

Built in 1992, this Earth-type dam primarily serves as a Fish and Wildlife Pond, with additional purposes for recreation. Standing at a height of 22 feet and with a maximum storage capacity of 99 acre-feet, the dam plays a crucial role in managing water resources in the region.

With a low hazard potential and a moderate risk assessment rating, Macedonia Dam is a key asset for the community. While not currently rated for its condition, the dam has regular inspections by the Forest Service to ensure its safety and functionality. The dam's uncontrolled spillway type and moderate discharge capacity of 419 cubic feet per second further highlight its importance in managing water flow and mitigating potential risks in the area.

For water resource and climate enthusiasts, Macedonia Dam offers a fascinating insight into the intersection of infrastructure, environmental conservation, and recreational opportunities. As a Federal-owned structure, it stands as a testament to the ongoing efforts to balance the needs of wildlife, recreation, and water management in the region. With its strategic location on a tributary of Johns Creek, Macedonia Dam plays a vital role in maintaining the ecological balance and enhancing the quality of life for both humans and wildlife in Union, South Carolina.

Year Completed

1992

Dam Length

609

Dam Height

22

River Or Stream

TRIBUTORY OF JOHNS CREEK

Primary Dam Type

Earth

Hydraulic Height

19

Nid Storage

99

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

22
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.