Biebell Lake Dam Reservoir Report
Last Updated: December 25, 2025
Biebell Lake Dam, located in St.
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Summary
Clair, Illinois, stands as a testament to both engineering prowess and environmental stewardship. Constructed in 1968 by designer Armin Reinhardt, this earthen dam serves primarily for recreational purposes, offering visitors a tranquil retreat amidst the natural beauty of Biebell Lake. With a height of 9 feet and a length of 275 feet, the dam provides a maximum storage capacity of 108 acre-feet, making it a vital resource for water management in the area.
Managed by a private entity, Biebell Lake Dam is regulated by the Illinois Department of Natural Resources (IDNR), ensuring compliance with state permitting, inspection, and enforcement protocols. The dam boasts a low hazard potential and moderate risk assessment rating, underscoring its structural integrity and commitment to public safety. While its spillway operates on an uncontrolled basis, the dam's overall risk management measures remain robust and effective, reflecting a proactive approach to mitigating potential hazards.
As a key feature within the tributary system of Silver Creek, Biebell Lake Dam not only enhances the recreational value of the region but also contributes to the broader ecosystem's health and sustainability. With its remarkable design and functional efficiency, this dam serves as a vital link between water resource management and climate resilience, embodying a harmonious balance between human activity and natural conservation efforts.
Year Completed |
1968 |
Dam Length |
275 |
Dam Height |
9 |
River Or Stream |
TRIB SILVER CREEK |
Primary Dam Type |
Earth |
Nid Storage |
108 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
9 |
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.
Biebell Lake Dam