Harrison Park West Detention Dam Reservoir Report

Last Updated: December 5, 2025

Harrison Park West Detention Dam, located in Rockford, Illinois, is a private-owned structure designed for flood risk reduction along the Trib Kishwaukee River.


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Summary

With a height of 15 feet and a length of 900 feet, this earth dam serves as a crucial water resource management system in Winnebago County. The dam's primary purpose is flood risk reduction, and it is regulated by the Illinois Department of Natural Resources (IDNR) to ensure proper maintenance and inspection.

Despite its significant hazard potential, the condition assessment of Harrison Park West Detention Dam is currently not available. The dam's last inspection took place in July 2018, with an inspection frequency of every 3 years. While the risk assessment is moderate, with a rating of 3, there is no detailed risk management plan in place. It is crucial for water resource and climate enthusiasts to monitor the condition and management of this structure to ensure the safety of its surrounding areas in case of emergencies.

As a vital infrastructure in managing water resources and mitigating flood risks, Harrison Park West Detention Dam plays a crucial role in the overall water management system in Winnebago County. With its location along the Trib Kishwaukee River and the continuous monitoring and inspection by the IDNR, this earth dam serves as a key component in protecting the community from potential water-related disasters. It is essential for stakeholders and enthusiasts to stay informed about the dam's condition and any updates regarding its risk management measures to ensure the safety and resilience of the area in the face of changing climate patterns.

Dam Length

900

Dam Height

15

River Or Stream

TRIB KISHWAUKEE RIVER

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

15
       
Seasonal Comparison

Weather Forecast

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.