Young-Gibson Lake Dam Reservoir Report

Last Updated: December 18, 2025

Young-Gibson Lake Dam, also known as Old Tom Creek Structure 28, is a privately owned earth dam located in Henderson County, Illinois.


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Summary

Built in 1955 by the USDA NRCS, this dam serves primarily for recreational purposes, with a height of 32 feet and a length of 473 feet. It has a normal storage capacity of 56 acre-feet and a maximum storage of 129 acre-feet.

Managed by the Illinois Department of Natural Resources, the dam is state regulated, permitted, inspected, and enforced to ensure its safety and compliance. With an uncontrolled spillway and outlet gates, it has a low hazard potential and a moderate risk assessment ranking. While the condition assessment is not available, the dam has an inspection frequency of 5 years to monitor its structural integrity and functionality.

Situated along the Trib Old Tom Creek, Young-Gibson Lake Dam provides a picturesque setting for outdoor enthusiasts and climate advocates to enjoy water-based activities. With its strategic location and design, this dam plays a crucial role in water resource management and environmental conservation efforts in the region.

Year Completed

1955

Dam Length

473

Dam Height

32

River Or Stream

TRIB OLD TOM CREEK

Primary Dam Type

Earth

Nid Storage

129

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

32
       
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.