Illinois Department Of Conservation Pond Dam Reservoir Report
Last Updated: December 5, 2025
Located in Carlyle, Illinois, the Illinois Department of Conservation Pond Dam, also known as Ilnoname 2040, stands as a private recreational structure that has been in place since its completion in 1929.
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Summary
This earth-type dam, with a height of 17 feet and a length of 369 feet, serves the primary purpose of recreation, offering a storage capacity of 91 acre-feet with a normal storage level of 50 acre-feet. Situated on the TRIB CASSAR CREEK, this dam is regulated, permitted, inspected, and enforced by the Illinois Department of Natural Resources (IDNR), ensuring its safety and compliance with state guidelines.
With a low hazard potential and a moderate risk assessment level, the Illinois Department of Conservation Pond Dam presents a secure and stable structure for recreational use. Although its condition assessment is currently listed as not available, regular inspections are conducted every five years to monitor its performance and safety. Despite being uncontrolled, the spillway and outlet gates provide sufficient water management capabilities, ensuring the dam's reliability in managing water levels and minimizing potential risks.
As a part of the Louisville District under the US Army Corps of Engineers, this dam contributes to the local water resource management efforts, showcasing a dedication to recreational activities while prioritizing safety and regulatory compliance. Water resource and climate enthusiasts can appreciate the significance of this dam in both providing recreational opportunities and maintaining environmental sustainability in Fayette County, Illinois.
Year Completed |
1929 |
Dam Length |
369 |
Dam Height |
17 |
River Or Stream |
TRIB CASSAR CREEK |
Primary Dam Type |
Earth |
Nid Storage |
91 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
17 |
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.
Illinois Department Of Conservation Pond Dam