Mccarty Holman Dam Reservoir Report

Last Updated: December 11, 2025

Mccarty Holman Dam, located in Rankin, Mississippi, was completed in 1986 and serves as a vital resource for recreation in the area.


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Summary

Owned privately, the dam stands at a height of 36 feet and has a storage capacity of 960 acre-feet. The dam, primarily made of earth with a stone core, spans 745 feet and regulates the flow of Thompson Creek. With a low hazard potential and a moderate risk assessment, the dam provides essential water management for the surrounding area.

Managed by the Mississippi Department of Environmental Quality, Mccarty Holman Dam is state-regulated, inspected, and enforced to ensure its structural integrity and safety. The dam operates with uncontrolled spillways and outlet gates, allowing for controlled discharge in times of high water levels. While the dam's condition assessment is currently not rated, its risk management measures help mitigate potential risks and ensure the safety of the surrounding community.

With its picturesque surroundings and important role in water resource management, Mccarty Holman Dam is a key feature in the Vicksburg District. Its purpose for recreation and water regulation make it a valuable asset in Mississippi's infrastructure, highlighting the intersection of environmental conservation and public enjoyment.

Year Completed

1986

Dam Length

745

Dam Height

36

River Or Stream

UNT OF THOMPSON CREEK

Primary Dam Type

Earth

Surface Area

54

Hydraulic Height

31

Drainage Area

0.44

Nid Storage

960

Structural Height

36

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Soil

Nid Height

36
       
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.