Kaskaskia Island Wildlife Area Lake Dam Reservoir Report
Last Updated: December 25, 2025
Located in St.
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Summary
Clair County, Illinois, the Kaskaskia Island Wildlife Area Lake Dam, also known as Goose Lake Dam, is a local government-owned structure with a primary purpose of recreation. Constructed in 1990 by the Peabody Coal Company, this earth dam stands at a height of 24 feet and stretches 1050 feet in length. It has a storage capacity of 5600 acre-feet, with a normal storage capacity of 1800 acre-feet.
The dam, situated on the Tributary of Kaskaskia River, is regulated by the Illinois Department of Natural Resources (IDNR) and undergoes regular state inspections. Despite being classified as having a low hazard potential, the dam's risk assessment is moderate (3), highlighting the importance of ongoing risk management measures. With an uncontrolled spillway type and outlet gates, the dam's last inspection was conducted in March 2013, with an inspection frequency of 5 years.
Enthusiasts of water resources and climate will find the Kaskaskia Island Wildlife Area Lake Dam a fascinating example of a locally-owned recreational structure in Illinois. This dam not only provides recreational opportunities but also plays a crucial role in water storage and management in the area. With its unique design features and regulatory oversight, the dam serves as a reminder of the importance of effective risk assessment and management in maintaining the safety and functionality of such essential infrastructure.
Year Completed |
1990 |
Dam Length |
1050 |
Dam Height |
24 |
River Or Stream |
TRIB KASKASKIA RIVER |
Primary Dam Type |
Earth |
Nid Storage |
5600 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
24 |
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.
Kaskaskia Island Wildlife Area Lake Dam