Lineage Lake Dam Reservoir Report

Last Updated: December 8, 2025

Lineage Lake Dam, located in Flowood, Mississippi, is a privately owned structure that serves primarily for recreational purposes.


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Summary

Constructed in 2004 by Benchmark Engineering, this earth dam stands at a height of 12 feet with a hydraulic height of 9.5 feet and a structural height of 18 feet. It has a storage capacity of 106 acre-feet, providing a surface area of 12.5 acres and a normal storage capacity of 52.8 acre-feet.

The dam's hazard potential is classified as high, but its condition assessment remains satisfactory as of the last inspection in December 2020. While it does not have outlet gates, Lineage Lake Dam has an uncontrolled spillway type and a maximum discharge of 2524 cubic feet per second. Despite its moderate risk level, the dam's risk management measures and emergency action plan status are not clearly specified in the data, highlighting potential areas for further evaluation and improvement to ensure the safety and resilience of this vital water resource in Rankin County, Mississippi.

Overall, Lineage Lake Dam presents an intriguing case study for water resource and climate enthusiasts, showcasing the intersection of private ownership, recreational use, and regulatory oversight in the management of a critical infrastructure. With its unique design features, storage capacity, and risk profile, this dam serves as a focal point for understanding the complexities of balancing human recreation with environmental protection and safety considerations in the context of water resource management and climate resilience efforts.

Year Completed

2004

Dam Length

800

Dam Height

12

River Or Stream

UNT OF HOG CREEK

Primary Dam Type

Earth

Surface Area

12.5

Hydraulic Height

9.5

Drainage Area

0.28

Nid Storage

106

Structural Height

18

Outlet Gates

None

Hazard Potential

High

Foundations

Soil

Nid Height

18
       
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.