Edmondson Lake Dam Reservoir Report

Last Updated: December 6, 2025

Edmondson Lake Dam, located in Calhoun, Mississippi, is a privately owned structure with a primary purpose of recreation.


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Summary

Completed in 2007, this earth dam stands at a height of 36 feet and boasts a storage capacity of 523 acre-feet. The dam's design includes a stone core and soil foundation, with a spillway type classified as 'Uncontrolled'.

Managed by the Mississippi Department of Environmental Quality, Edmondson Lake Dam has a low hazard potential and a moderate risk assessment rating. The dam overlooks the beautiful UNT of Topashaw Creek and offers a serene recreational space for visitors to enjoy. Despite its moderate risk level, the dam is not currently rated for condition assessment, highlighting the need for ongoing monitoring and maintenance to ensure its structural integrity remains intact.

For water resource and climate enthusiasts, Edmondson Lake Dam serves as a reminder of the importance of responsible dam management and maintenance practices. With its scenic location and recreational opportunities, this dam represents a balancing act between human enjoyment and environmental preservation in the ever-changing landscape of Mississippi's water resources.

Year Completed

2007

Dam Length

800

Dam Height

36

River Or Stream

UNT OF TOPASHAW CREEK

Primary Dam Type

Earth

Surface Area

31.2

Hydraulic Height

33

Drainage Area

0.34

Nid Storage

523

Structural Height

38

Hazard Potential

Low

Foundations

Soil

Nid Height

38
       
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.