Gray Lake Dam Reservoir Report

Last Updated: December 6, 2025

Gray Lake Dam, located in Macon, Mississippi, stands as a vital structure along the TR- Rocky Bottom Creek, serving primarily for recreational purposes since its completion in 1965.


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Summary

Managed by a private entity, this Earth dam with a buttress core has a modest height of 12 feet and a storage capacity of 80 acre-feet. Despite its uncontrolled spillway and outlet gates, the dam's hazard potential is rated as low, with a moderate risk assessment.

The USDA NRCS, acting as the dam's designer, ensures compliance with state regulations set by the Mississippi Department of Environmental Quality. Although the dam's condition assessment is currently not rated, it undergoes regular state inspections, indicating a commitment to safety and maintenance. The dam's risk management measures and emergency preparedness status are not explicitly outlined, suggesting potential areas for improvement in ensuring the long-term resilience of this critical water resource infrastructure.

For water resource and climate enthusiasts, Gray Lake Dam presents an intriguing case study of a privately-owned recreational dam in Mississippi, showcasing the collaborative efforts between federal agencies like the NRCS and state regulatory bodies to promote safety and environmental stewardship. With a moderate risk level and low hazard potential, the dam's role in water management and recreational activities underscores the importance of proactive risk assessment and emergency preparedness in safeguarding against potential threats and ensuring the sustainable use of this vital water resource for future generations.

Year Completed

1965

Dam Height

12

River Or Stream

TR- ROCKY BOTTOM CREEK

Primary Dam Type

Earth

Nid Storage

80

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Soil

Nid Height

12
       
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.