Blacks Creek Reservoir Reservoir Report

Last Updated: December 5, 2025

Blacks Creek Reservoir, located in Rabun County, Georgia, is a vital water supply resource managed by the local government.


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Summary

Constructed in 1987, this earth dam stands at 27 feet tall and has a maximum storage capacity of 24 acre-feet. With a primary purpose of water supply, the reservoir serves as a crucial source of water for the surrounding community in Mt. City.

Despite its low hazard potential, the dam at Blacks Creek Reservoir is subject to regular state inspections to ensure its structural integrity and safety. With an uncontrolled spillway and outlet gates, the reservoir is designed to manage water levels efficiently. The risk assessment for Blacks Creek Reservoir indicates a moderate risk level (3), prompting the need for ongoing risk management measures to safeguard the surrounding area from potential flooding or other emergencies.

Overall, Blacks Creek Reservoir plays a key role in water resource management in Georgia, providing essential water supply for the local community. As an earth dam with a controlled spillway, it exemplifies the balance between water storage and safety measures. Regular state inspections and a moderate risk assessment underscore the importance of maintaining and monitoring this crucial water infrastructure for the benefit of all stakeholders involved.

Year Completed

1987

Dam Length

300

Dam Height

27

River Or Stream

BLACK CREEK

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

24

Nid Storage

24

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

27
       
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.