Gillespie Country Club Lake Dam Reservoir Report

Last Updated: January 12, 2026

Gillespie Country Club Lake Dam, located in Macoupin County, Illinois, is a private earth dam completed in 1921 with a primary purpose of recreation.


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Summary

Standing at a height of 20 feet and a length of 213 feet, this dam impounds the Gillespie Country Club Lake, offering a serene setting for water resource and climate enthusiasts to enjoy various recreational activities. The dam is regulated by the Illinois Department of Natural Resources and has a low hazard potential, with a moderate risk assessment score.

Despite its age, Gillespie Country Club Lake Dam is well-maintained and inspected every five years, with the last inspection conducted in September 2014. The dam features an uncontrolled spillway and outlet gates, with a maximum storage capacity of 55 acre-feet and a normal storage level of 38 acre-feet. The dam poses no imminent threat, as indicated by its low hazard potential, making it a safe and enjoyable destination for outdoor enthusiasts seeking a peaceful retreat in the heart of Illinois. With its picturesque location along Trib Honey Creek and proximity to the city of Hardin, this dam serves as a vital recreational asset for the local community and visitors alike.

Year Completed

1921

Dam Length

213

Dam Height

20

River Or Stream

TRIB HONEY CREEK

Primary Dam Type

Earth

Nid Storage

55

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

20
       
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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.