Reservoir 54 Dam Reservoir Report

Last Updated: December 5, 2025

Reservoir 54 Dam, also known as Woodward Avenue Dam, is a local government-owned structure located in Woodridge, Illinois, along Lily Cache Creek.


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Summary

Constructed in 2002 by CBBEL, this earth dam stands at a height of 9 feet and spans 900 feet in length. With a primary purpose of flood risk reduction, Reservoir 54 Dam has a storage capacity of 100 acre-feet and a low hazard potential. The dam is state-regulated by the Illinois Department of Natural Resources, ensuring that it undergoes regular inspections and meets all necessary safety standards.

Despite its relatively small size, Reservoir 54 Dam plays a crucial role in managing flood risks in the DuPage County area. The dam's uncontrolled spillway and buttress core type contribute to its effective flood control capabilities, helping to protect local communities from potential inundation during periods of heavy rainfall. While the dam's normal storage capacity is currently listed as 0 acre-feet, its maximum storage capacity of 100 acre-feet provides a vital buffer against potential flood events. With a risk assessment rating of moderate, Reservoir 54 Dam remains a key component of the region's water resource management infrastructure.

In the event of an emergency, the dam's emergency action plan (EAP) status and preparedness are not currently available, highlighting the need for ongoing risk management and preparedness measures. With a history of regular inspections and a low hazard potential, Reservoir 54 Dam serves as a testament to the importance of proactive dam safety measures in mitigating the potential impacts of extreme weather events on local communities. As climate change continues to pose new challenges for water resource management, structures like Reservoir 54 Dam will play an increasingly vital role in safeguarding against the impacts of flooding and ensuring the resilience of our water infrastructure.

Year Completed

2002

Dam Length

900

Dam Height

9

River Or Stream

LILY CACHE CREEK

Primary Dam Type

Earth

Nid Storage

100

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

9
       
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.