Widner Lake Dam Reservoir Report
Nearby: Newell Dam Lake Iroquois
Last Updated: January 12, 2026
Widner Lake Dam in Iroquois, Illinois, stands as a testament to the importance of water resource management in the region.
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Summary
Built in 1965, this private dam serves primarily for recreational purposes, offering a serene escape for visitors seeking solace in nature. With a height of 19 feet and a length of 230 feet, the dam creates a reservoir with a storage capacity of 149 acre-feet, providing a picturesque setting for outdoor activities.
Managed by the Illinois Department of Natural Resources, Widner Lake Dam is subject to state regulations and inspections to ensure its continued safety and functionality. Despite its low hazard potential, the dam poses a moderate risk that necessitates ongoing risk assessment and management measures. With its earth core and buttress design, the dam serves as a vital component of the local ecosystem, regulating the flow of the Trib Spring Creek and contributing to the overall water management efforts in the area.
Located in the quiet town of Loda-Offstream, Widner Lake Dam not only enhances the local landscape but also underscores the importance of sustainable water management practices in mitigating the impacts of climate change. As climate enthusiasts and water resource advocates come together to appreciate the beauty and functionality of this structure, they are reminded of the interconnectedness between water resources, climate, and human activities.
Year Completed |
1965 |
Dam Length |
230 |
Dam Height |
19 |
River Or Stream |
TRIB SPRING CREEK |
Primary Dam Type |
Earth |
Nid Storage |
149 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
19 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Widner Lake Dam