Roy Demanes Pond Dam Reservoir Report

Last Updated: December 5, 2025

Roy Demanes Pond Dam, also known as Demanes Pond, is a private dam located in Pottstown, Illinois, along the TR-Kickapoo Creek.


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Summary

Built in 1975 by the USDA NRCS, this earth dam stands at 44 feet high and stretches 255 feet in length, providing a vital fish and wildlife pond area for the local community. With a storage capacity of 70 acre-feet, the dam serves multiple purposes including recreation and conservation.

Managed by the Illinois Department of Natural Resources, Roy Demanes Pond Dam boasts a low hazard potential and a moderate risk assessment rating of 3. Despite its uncontrolled spillway and outlet gates, the dam remains in good condition with regular state inspections and enforcement measures in place. The dam's location in Peoria County makes it a key feature for water resource and climate enthusiasts interested in the conservation efforts and recreational opportunities provided by this structure along the Kickapoo Creek.

While associated structures are limited, the dam's presence enhances the surrounding environment with a surface area of 5 acres and a drainage area of 0.11 square miles. With its unique design featuring stone core types and soil foundations, Roy Demanes Pond Dam stands as a testament to the collaboration between federal agencies, private owners, and state regulators in managing water resources for both wildlife and human enjoyment in the heart of Illinois.

Year Completed

1975

Dam Length

255

Dam Height

44

River Or Stream

TR- KICKAPOO CREEK

Primary Dam Type

Earth

Surface Area

5

Drainage Area

0.11

Nid Storage

70

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Soil

Nid Height

44
       
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.