Coffeen Station Ash Pond 1 Dam Reservoir Report
Last Updated: December 5, 2025
Coffeen Station Ash Pond 1 Dam, located in Montgomery County, Illinois, is a rockfill dam primarily used for purposes other than flood control or water supply.
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Summary
The dam, with a significant hazard potential, is owned by a public utility and regulated by the Illinois Department of Natural Resources. It stands on the TRIB EAST FORK SHOAL CR stream and is under the jurisdiction of the state, with regular inspections and enforcement to ensure its safety and compliance with regulations.
Despite limited available data on its structural specifications and storage capacity, the Coffeen Station Ash Pond 1 Dam poses a moderate risk, as assessed by authorities. The emergency action plan for the dam was last updated in 2017, and while there have been no recent condition assessments available, the dam is subject to regular inspections to monitor its safety. The risk management measures for the dam are not explicitly listed, indicating a need for further information on its maintenance and emergency response protocols.
In the realm of water resource and climate enthusiasts, the Coffeen Station Ash Pond 1 Dam serves as an interesting case study for understanding the management and regulation of dams in Illinois. With its unique purpose and hazard potential, this dam highlights the importance of proactive risk assessment and monitoring to ensure the safety of surrounding communities and the environment. Further research and data collection on this dam could provide valuable insights into the intersection of infrastructure, water resources, and climate resilience in the region.
River Or Stream |
TRIB EAST FORK SHOAL CR |
Primary Dam Type |
Rockfill |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
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.
Coffeen Station Ash Pond 1 Dam