Mcleansboro Lake Dam Reservoir Report
Last Updated: January 12, 2026
Mcleansboro Lake Dam, located in Hamilton County, Illinois, is a vital water resource providing both recreation and water supply purposes.
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Summary
Constructed in 1937 by CRRAWFORD, MURPHY & TILLY, this earth dam stands at a height of 36 feet and spans 2955 feet in length. The dam has a storage capacity of 1253 acre-feet, with a normal storage level of 604 acre-feet, covering a surface area of 62 acres.
Managed by the local government, the Mcleansboro Lake Dam is regulated by the Illinois Department of Natural Resources (IDNR) and undergoes regular inspections to ensure its structural integrity. With a high hazard potential, the dam presents a moderate risk level which necessitates risk management measures to be in place. The spillway, with a width of 320 feet, is uncontrolled, while the outlet gates also remain uncontrolled.
The Mcleansboro Lake Dam plays a crucial role in the Bear Creek watershed, providing essential water resources for the region. With its scenic location and recreational opportunities, the dam serves as a popular destination for outdoor enthusiasts and climate advocates alike, highlighting the interconnectedness of water resources and climate resilience.
Year Completed |
1937 |
Dam Length |
2955 |
Dam Height |
36 |
River Or Stream |
BEAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
62 |
Drainage Area |
1.3 |
Nid Storage |
1253 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
36 |
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.
Mcleansboro Lake Dam