Deushane Slurry Impoundment 3 Dam Reservoir Report

Last Updated: December 19, 2025

The Deushane Slurry Impoundment 3 Dam, also known as External Plug Ep-3, is a private-owned structure located in London Mills, Illinois.


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Summary

Managed by the Midland Coal Company, this dam serves as a Fish and Wildlife Pond, with a primary purpose of supporting aquatic habitats. Standing at a height of 46 feet, it has a storage capacity of 60 acre-feet and is regulated by the Illinois Department of Natural Resources (IDNR). Despite its low hazard potential, the dam is subject to state permitting, inspection, and enforcement to ensure its safety and functionality.

Situated near the TRIB LITTLERS CREEK, the Deushane Slurry Impoundment 3 Dam plays a crucial role in supporting local wildlife and maintaining ecological balance in the area. Although the dam's condition assessment is currently not available, it undergoes regular inspections every 5 years to monitor its structural integrity. With a moderate risk rating of 3, the dam is equipped with emergency management measures to mitigate potential hazards and ensure the safety of surrounding communities in case of any unforeseen events.

As a vital component of the regional water resource management system, the Deushane Slurry Impoundment 3 Dam stands as a testament to the importance of responsible infrastructure development in safeguarding natural ecosystems and addressing climate challenges. Its role in supporting fish and wildlife habitats underscores the interconnected relationship between water resources, environmental conservation, and sustainable development practices.

Dam Height

46

River Or Stream

TRIB LITTLERS CREEK

Primary Dam Type

Earth

Nid Storage

60

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

46
       
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.