St. Clair County Retention Pond 1 Dam Reservoir Report
Last Updated: February 6, 2026
Located in Belleville, Illinois, the St.
Summary
Clair County Retention Pond 1 Dam, also known as C. K. & L. of I. Lake, serves as a private recreational facility along Wolf Branch Creek. Built in 1999, this earth dam stands at a height of 31 feet and spans 500 feet in length, with a storage capacity of 191 acre-feet. While the primary purpose of this dam is for recreation, it also helps regulate water flow and mitigate flooding in the area.
Managed by the Illinois Department of Natural Resources (IDNR), the dam is subject to state regulations, inspections, and enforcement to ensure its safety and functionality. With a hazard potential rated as high and a moderate risk assessment, the St. Clair County Retention Pond 1 Dam plays a crucial role in water resource management and climate resilience in the region. However, the condition assessment of the dam is currently marked as "Not Available," highlighting the importance of ongoing monitoring and maintenance efforts to safeguard its integrity.
As a significant feature in the St. Louis District, the dam's uncontrolled spillway and outlet gates present operational challenges that require careful management. With Congressman Mike Bost representing the area, coordination between local, state, and federal agencies is essential to address any potential risks and ensure the continued effectiveness of the St. Clair County Retention Pond 1 Dam in safeguarding the community and environment against water-related hazards.
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Wind
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Humidity
15-Day Weather Outlook
Year Completed |
1999 |
Dam Length |
500 |
Dam Height |
31 |
River Or Stream |
WOLF BRANCH CREEK |
Primary Dam Type |
Earth |
Nid Storage |
191 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
31 |
Seasonal Comparison
5-Day Hourly Forecast Detail
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.
St. Clair County Retention Pond 1 Dam