Churchill Club Dam Basin B Dam Reservoir Report

Last Updated: December 5, 2025

Churchill Club Dam Basin B Dam, also known as Douglas Road Dam, is a private dam located in Kendall County, Illinois, specifically in the city of Oswego.


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Summary

Completed in 2003, this concrete multi-arch dam stands at a height of 10 feet and has a length of 65 feet. Its primary purpose is flood risk reduction, serving as a crucial structure along the tributary of Waubansee Creek.

With a storage capacity of 275 acre-feet, this dam plays a vital role in managing water resources in the area, covering a surface area of 18.6 acres and draining a watershed of 2.76 square miles. Despite being classified as having a low hazard potential, the dam is regulated and inspected by the Illinois Department of Natural Resources to ensure its safety and functionality. The spillway of the dam is uncontrolled, with a width of 60 feet, allowing for the safe release of excess water during periods of high flow.

Overall, Churchill Club Dam Basin B Dam serves as a significant infrastructure for flood risk mitigation in the region, contributing to the overall water resource management efforts. Its design and construction by Henderson and Bodwell, LLP, reflect a commitment to enhancing the resilience of the community against potential water-related challenges. As climate change continues to impact our environment, dams like Churchill Club play a critical role in safeguarding communities and ecosystems from the threats of flooding and water scarcity.

Year Completed

2003

Dam Length

65

Dam Height

10

River Or Stream

TRIB WAUBANSEE CREEK

Primary Dam Type

Concrete

Surface Area

18.6

Drainage Area

2.76

Nid Storage

275

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

10
       
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.