Coffeen Gmf Recycle Pond Dam Reservoir Report
Last Updated: December 5, 2025
Located in Coffeen, Illinois, the Coffeen Gmf Recycle Pond Dam, also known as Ameren Coffeen Gmf Recycle Pond Dam, serves the primary purpose of debris control along the McDavid Branch East Fork Shoal river.
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Summary
This earth dam, with a height of 16 feet and a length of 3600 feet, plays a crucial role in managing water resources in Montgomery County. The dam has a storage capacity of 342 acre-feet and a surface area of 0.03 square miles, providing essential flood protection and water storage for the surrounding area.
Managed by a public utility, the Coffeen Gmf Recycle Pond Dam is regulated and inspected by the Illinois Department of Natural Resources. With a low hazard potential and a very high risk assessment rating, the dam is designed to withstand potential emergencies and protect the local community from flooding risks. While the condition assessment is not currently available, the dam's controlled spillway, with a width of 26 feet, ensures efficient water discharge during heavy rainfall events. Overall, this dam serves as a critical infrastructure for water resource management and climate resilience in the region.
As water resource and climate enthusiasts, the Coffeen Gmf Recycle Pond Dam presents an intriguing case study in earth dam construction and management. With its stone core and soil foundation, the dam showcases engineering excellence in debris control and flood protection. The involvement of the St. Louis District in its oversight highlights the collaborative efforts between federal and state agencies in ensuring the safety and functionality of this essential water infrastructure. As we continue to face challenges from climate change and extreme weather events, the Coffeen Gmf Recycle Pond Dam stands as a testament to the importance of sustainable water management practices for a more resilient future.
Dam Length |
3600 |
Dam Height |
16 |
River Or Stream |
MCDAVID BRANCH EAST FORK SHOAL |
Primary Dam Type |
Earth |
Surface Area |
0.03 |
Drainage Area |
0.08 |
Nid Storage |
342 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
16 |
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 Gmf Recycle Pond Dam