Lackey Dam Reservoir Report

Last Updated: December 7, 2025

Lackey Dam, located in Rankin, Mississippi, is a privately-owned structure primarily used for recreation.


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Summary

Completed in 1992, this earth dam stands at a height of 18 feet and has a hydraulic height of 15 feet. It spans 400 feet in length and has a storage capacity of 77 acre-feet, with a normal storage level of 51 acre-feet. The dam sits on the UNT of Pelahatchie, within the jurisdiction of the Mississippi Department of Environmental Quality.

With a low hazard potential and a moderate risk assessment rating, Lackey Dam has not been structurally assessed or rated. However, it is subject to state regulation, permitting, inspection, and enforcement, ensuring its safety and compliance with environmental standards. The dam features an uncontrolled spillway type and has a maximum discharge capacity of 132 cubic feet per second, serving as an essential part of the water resource management system in the area.

For water resource and climate enthusiasts, Lackey Dam offers a fascinating look into the engineering and management of a recreational earth dam in Mississippi. Its location by the UNT of Pelahatchie and its relationship with the Mississippi Department of Environmental Quality highlight the importance of sustainable water infrastructure in the region. Despite its low hazard potential, continuous monitoring and maintenance ensure the safety and integrity of Lackey Dam for both recreational use and environmental protection.

Year Completed

1992

Dam Length

400

Dam Height

18

River Or Stream

UNT OF PELAHATCHIE

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

15

Drainage Area

0.09

Nid Storage

77

Hazard Potential

Low

Nid Height

18
       
Seasonal Comparison

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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.