Smith Lake Dam Reservoir Report

Last Updated: December 5, 2025

Smith Lake Dam, located in Peoria, Illinois, is a private dam constructed in 1969 with a primary purpose of recreation.


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Summary

The dam stands at a height of 47 feet and has a length of 625 feet, providing a storage capacity of 138 acre-feet. Situated on the Tributary of the Illinois River, the dam is regulated by the Illinois Department of Natural Resources and undergoes regular inspections to ensure its safety and functionality.

With a significant hazard potential and a moderate risk assessment rating, Smith Lake Dam is equipped with uncontrolled spillways and outlet gates. Despite its condition assessment not being available, the dam's emergency action plan status and risk management measures remain undisclosed. Representing a key recreational resource in the area, the dam offers opportunities for boating, fishing, and other water-based activities for enthusiasts and visitors to enjoy.

Managed by a private owner and associated engineers, Smith Lake Dam serves as a vital structure for water resource management and climate enthusiasts in the region. Its presence on the tributary of the Illinois River contributes to the overall ecosystem health and provides a scenic backdrop for outdoor recreation. As the dam continues to play a crucial role in the local community, efforts to ensure its safety and structural integrity remain a top priority for all stakeholders involved.

Year Completed

1969

Dam Length

625

Dam Height

47

River Or Stream

TRIB ILLINOIS RIVER

Primary Dam Type

Earth

Nid Storage

138

Outlet Gates

Uncontrolled

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

47
       
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.