Rock Hill Lake Dam Reservoir Report

Last Updated: December 5, 2025

Rock Hill Lake Dam, located in Jonesboro, Georgia, serves as a private recreational resource along the Rum Creek.


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Summary

Standing at a height of 15 feet with a hydraulic height of 13.9 feet, this earth dam primarily caters to recreational activities. With a storage capacity of 75.1 acre-feet and a surface area of 7.5 acres, the dam offers a serene environment for water resource and climate enthusiasts to enjoy.

Despite being unregulated by the state and having a low hazard potential, Rock Hill Lake Dam poses a moderate risk, according to a risk assessment rating of 3. With an uncontrolled spillway and outlet gates, the dam has not been recently inspected or assessed for its condition. However, its overall risk management measures and emergency action plans remain undisclosed.

Although the dam's historical background and construction details are unknown, it continues to stand as a private entity for recreational purposes. Situated in a scenic environment in Clayton County, Rock Hill Lake Dam offers a unique destination for visitors seeking to explore water resource management and climate conservation efforts in the region.

Dam Length

400

Dam Height

15

River Or Stream

RUM CREEK

Primary Dam Type

Earth

Surface Area

7.5

Hydraulic Height

13.9

Drainage Area

368

Nid Storage

75.1

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

15
       
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.