Sallacoa Creek Watershed Structure No. 99 Reservoir Report

Last Updated: December 5, 2025

Located in the picturesque Sallacoa Creek Watershed in Fairmount, Georgia, Structure No.


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Summary

99 stands as a testament to effective flood risk reduction efforts. Built in 1968 by the Natural Resources Conservation Service, this earth dam boasts a height of 59.5 feet and a hydraulic height of 51.3 feet, providing crucial protection to the surrounding area from potential flooding events. With a drainage area of 1018 acres and a storage capacity of 450 acre-feet, this structure plays a vital role in managing water flow and safeguarding the local community.

Despite its age, Structure No. 99 remains in good condition, with a low hazard potential and a moderate risk assessment rating. With uncontrolled spillways and outlet gates, this dam is designed to efficiently release excess water and prevent overflow, ensuring the safety of nearby residents and infrastructure. Regular inspections, the last of which was conducted in February 2018, help to maintain the structure's integrity and readiness for any potential emergency situations.

As part of the larger water management system in the area, Sallacoa Creek Watershed Structure No. 99 exemplifies the importance of strategic infrastructure in mitigating flood risks and protecting communities. With its solid design, ample storage capacity, and effective risk management measures, this structure serves as a crucial component in the preservation of the local environment and the safety of those who call Gordon County home.

Year Completed

1968

Dam Length

591

Dam Height

59.5

River Or Stream

Becky Branch

Primary Dam Type

Earth

Surface Area

4.5

Hydraulic Height

51.3

Drainage Area

1018

Nid Storage

450

Structural Height

51.3

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

60
       
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.