Dayton Estates Dam Reservoir Report

Last Updated: December 23, 2025

Dayton Estates Dam, located in Dayton, Illinois, was completed in 1965 and serves as a key recreational site for water resource and climate enthusiasts.


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Summary

With a primary purpose of recreation, this earth-type dam stands at a height of 15 feet and stretches 240 feet in length, providing a storage capacity of 21 acre-feet. The dam is situated on the TRIB FOX RIVER, within the LaSalle County jurisdiction, and is regulated by the Illinois Department of Natural Resources (IDNR).

Despite its high hazard potential, Dayton Estates Dam lacks a condition assessment and emergency action plan, presenting some challenges in risk management and preparedness. The dam features an uncontrolled spillway and outlet gates, with a spillway width of 23 feet. It is subject to regular inspections and falls under the regulatory oversight of the state, with a moderate risk assessment rating. The dam's location within the Chicago District of the US Army Corps of Engineers adds an additional layer of federal involvement in its operations and maintenance.

Overall, Dayton Estates Dam stands as a vital recreational asset in the region, offering opportunities for outdoor activities and water-based adventures. Its presence on the TRIB FOX RIVER contributes to the local ecosystem and provides a source of enjoyment for residents and visitors alike. As efforts continue to enhance the dam's safety and risk management measures, it remains a significant landmark for water resource and climate enthusiasts to explore and appreciate.

Year Completed

1965

Dam Length

240

Dam Height

15

River Or Stream

TRIB FOX RIVER

Primary Dam Type

Earth

Nid Storage

21

Outlet Gates

Uncontrolled

Hazard Potential

High

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.