Silver Bay Llc Lake Dam Reservoir Report
Last Updated: December 25, 2025
Silver Bay LLC Lake Dam, also known as Dam 3a Impoundment, is a privately owned structure located in Freeburg, Illinois.
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Summary
Built in 1991 by the Peabody Coal Co., this Earth type dam stands at a height of 67 feet and has a length of 2500 feet. It serves as a vital component for the management of water resources in the area, with a storage capacity of 2385 acre-feet and a maximum discharge rate of 825 cubic feet per second.
The dam is regulated and inspected by the Illinois Department of Natural Resources, ensuring that it meets safety standards and operational requirements. With a low hazard potential and a moderate risk assessment rating, the dam plays a crucial role in protecting the surrounding community from potential flooding events. Despite its age, the dam continues to fulfill its primary purpose effectively, demonstrating the importance of proper maintenance and oversight in water resource management.
As a key feature along the tributary of Silver Creek, Silver Bay LLC Lake Dam not only provides essential water storage capabilities but also contributes to the overall ecological balance of the region. With its uncontrolled spillway and outlet gates, the dam represents a harmonious blend of human engineering and environmental stewardship, showcasing the intersection of water resource management and climate resilience in today's rapidly changing world.
Year Completed |
1991 |
Dam Length |
2500 |
Dam Height |
67 |
River Or Stream |
TRIB SILVER CREEK |
Primary Dam Type |
Earth |
Nid Storage |
2385 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
67 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Silver Creek Near Freeburg
|
28cfs |
Kaskaskia River At New Athens
|
549cfs |
Richland Creek Near Hecker
|
13cfs |
Kaskaskia River Near Venedy Station
|
434cfs |
Silver Creek Near Troy
|
5cfs |
Mississippi River At St. Louis
|
80100cfs |
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.
Silver Bay Llc Lake Dam