Deep Lake Dam Reservoir Report

Last Updated: December 5, 2025

Deep Lake Dam, also known as Wildlife Prairie Pk Deep Lake Dam 1, is a privately owned structure located in Peoria, Illinois.


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Summary

Managed by the Illinois Department of Natural Resources (IDNR), this dam serves as a fish and wildlife pond, providing vital support for local ecosystems. Standing at 47 feet tall and with a storage capacity of 348 acre-feet, the dam plays a crucial role in regulating water flow and supporting recreational activities in the area.

Constructed with an earth core and stone foundation, Deep Lake Dam spans 320 feet and covers a surface area of 15.33 acres. With a low hazard potential and a moderate risk assessment rating, the dam has been inspected regularly, with the last assessment conducted in April 2019. The dam's spillway, with a width of 11 feet, ensures safe water discharge in times of high flow, while its position on TRIB KICKAPOO CREEK contributes to the overall drainage area of 0.7 square miles.

This dam, designed by MCCLURE ENGINEERING, stands as a testament to the careful balance between human infrastructure and environmental stewardship. With its primary purpose of supporting fish and wildlife, Deep Lake Dam serves as a valuable resource for the community, offering both recreational opportunities and essential habitat preservation. As climate change continues to impact water resources, structures like Deep Lake Dam play a vital role in ensuring the sustainability and resilience of our ecosystems.

Dam Length

320

Dam Height

47

River Or Stream

TRIB KICKAPOO CREEK

Surface Area

15.33

Drainage Area

0.7

Nid Storage

348

Outlet Gates

Needle - 0

Hazard Potential

Low

Foundations

Soil

Nid Height

47
       
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.