Waterloo Sportsman Club Lake 1 Dam Reservoir Report

Last Updated: December 23, 2025

Located in Monroe, Illinois, the Waterloo Sportsman Club Lake 1 Dam stands as a testament to the importance of water resources for recreational purposes.


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Summary

Built in 1948, this earth dam with a buttress core type serves as a vital structure for the Waterloo Sportsman Club Lake, offering a storage capacity of 214 acre-feet and a primary purpose of recreation. The dam is state-regulated by the Illinois Department of Natural Resources, ensuring regular inspections and enforcement to maintain its integrity.

With a dam height of 29 feet and a length of 300 feet, the Waterloo Sportsman Club Lake 1 Dam poses a significant hazard potential due to its uncontrolled spillway type. Despite its moderate risk assessment, the dam lacks a current condition assessment, emergency action plan, or inundation maps, raising concerns about its readiness for potential emergencies. As water resource and climate enthusiasts, it is crucial to advocate for the implementation of risk management measures and the development of comprehensive emergency preparedness protocols to safeguard this important infrastructure.

As we continue to monitor the condition of the Waterloo Sportsman Club Lake 1 Dam, it is important to recognize the role of private ownership in the maintenance and operation of such critical water structures. With regular inspections and a focus on improving risk assessment and emergency planning, we can ensure the safety and sustainability of this dam for generations to come, allowing for the continued enjoyment of recreational activities in the surrounding area.

Year Completed

1948

Dam Length

300

Dam Height

29

River Or Stream

TRIB HORSE CREEK

Primary Dam Type

Earth

Nid Storage

214

Outlet Gates

Uncontrolled

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

29
       
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.