Pebble Creek Dam Reservoir Report

Last Updated: December 5, 2025

Pebble Creek Dam, also known as Loves Park Pebble Creek Reservoir, is a vital flood risk reduction structure located in Winnebago County, Illinois.


°F

°F

mph

Wind

%

Humidity

Summary

Owned by the local government and regulated by the Illinois Department of Natural Resources, this earth dam stands at a height of 21 feet and stretches 900 feet in length. Completed in 1984, it holds a maximum storage capacity of 242 acre-feet of water from the Pebble Park Stream, with a high hazard potential due to its critical role in flood control.

With a spillway width of 147 feet and uncontrolled outlet gates, Pebble Creek Dam is designed to handle a maximum discharge of 6,167 cubic feet per second. Despite its high hazard potential, the condition assessment of the dam is currently reported as "Not Available," highlighting the need for regular inspections and maintenance to ensure its structural integrity. The emergency action plan for the dam was last revised in May 2016, emphasizing the importance of preparedness and risk management measures for this crucial infrastructure in the region. For water resource and climate enthusiasts, Pebble Creek Dam serves as a significant example of the importance of proper dam management and maintenance in mitigating flood risks and protecting communities from potential disasters.

Year Completed

1984

Dam Length

900

Dam Height

21

River Or Stream

PEBBLE PARK

Primary Dam Type

Earth

Nid Storage

242

Outlet Gates

Uncontrolled

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

21
       
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.