International Center South Dam Reservoir Report

Last Updated: December 5, 2025

The International Center South Dam in Grundy, Illinois, is a concrete structure designed by Christopher B.


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Summary

Burke Engineering to effectively reduce flood risks along the TRIB AUX SABLE CREEK. Completed in 2004, this dam stands at a height of 7 feet and has a length of 78.83 feet, providing a storage capacity of 34.38 acre-feet. With a spillway width of 79 feet and a maximum discharge of 444 cubic feet per second, it serves as a crucial asset in managing water flow and protecting surrounding areas from potential flooding.

Managed by a private entity, the International Center South Dam is regulated by the Illinois Department of Natural Resources (IDNR) and undergoes regular inspections to ensure its structural integrity and functionality. With a significant hazard potential and a moderate risk assessment, the dam plays a vital role in mitigating flood risks and safeguarding the local community against potential water-related disasters. While the condition assessment is currently not available, the dam's emergency action plan and risk management measures are essential components in ensuring its effective operation and response in times of crisis.

As a key feature in the flood risk reduction efforts in the region, the International Center South Dam remains a crucial infrastructure asset for water resource and climate enthusiasts. Its strategic location, design features, and regulatory oversight highlight its importance in safeguarding communities and enhancing water management practices in Grundy County, Illinois. With a focus on risk assessment and emergency preparedness, this dam serves as a critical component in ensuring the resilience of the local area against water-related hazards and climate challenges.

Year Completed

2004

Dam Length

78.83

Dam Height

7

River Or Stream

TRIB AUX SABLE CREEK

Primary Dam Type

Concrete

Surface Area

6.82

Drainage Area

2.21

Nid Storage

34.38

Outlet Gates

None

Hazard Potential

Significant

Foundations

Soil

Nid Height

7
       
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.