Coens Pond Dam Reservoir Report
Nearby: Vernor Lake Dam East Fork Lake Dam
Last Updated: December 6, 2025
Coens Pond Dam, located in Bennington, Illinois, is a privately owned structure primarily used for recreation.
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Summary
Built in 1974, this earth dam stands at a height of 18 feet and spans a length of 420 feet, with a storage capacity of 55 acre-feet. The dam overlooks the Trib Fox River and is regulated by the Illinois Department of Natural Resources, ensuring that the dam is inspected, permitted, and enforced to meet safety standards.
Despite its low hazard potential, Coens Pond Dam poses a moderate risk level, indicating the need for ongoing risk assessment and management measures. The dam features an uncontrolled spillway with a width of 64 feet and outlet gates also left uncontrolled. While the condition assessment of the dam is not available, the inspection frequency is set at 5 years, suggesting regular monitoring to prevent any potential issues.
Water resource and climate enthusiasts will find Coens Pond Dam an intriguing site to study, given its unique design features and recreational purpose. The dam's location along the Fox River tributary in Richland County, Illinois, offers a valuable opportunity to observe the intersection of human infrastructure with natural water systems. As efforts continue to ensure the safety and functionality of Coens Pond Dam, researchers and enthusiasts alike can monitor its risk profile and management strategies to better understand the complex dynamics of water resource management in the region.
Year Completed |
1974 |
Dam Length |
420 |
Dam Height |
18 |
River Or Stream |
TRIB FOX RIVER |
Primary Dam Type |
Earth |
Nid Storage |
55 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
18 |
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.
Coens Pond Dam