Wildwood Lake Estates Dam Reservoir Report
Last Updated: December 21, 2025
Wildwood Lake Estates Dam, located in Heckler, Illinois, is a private dam built in 1982 by THOUVENOT, WADE & MOERCHEN, INC.
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Summary
The dam serves primarily for irrigation purposes, but also offers recreational opportunities. Standing at 35 feet tall and 785 feet long, the earth dam holds a storage capacity of 1279 acre-feet of water from the TRIB WEST FORK RICHLAND CREEK.
The dam is regulated by the Illinois Department of Natural Resources (IDNR) and undergoes regular inspections, with a significant hazard potential identified. While the condition assessment is not available, the dam has an Emergency Action Plan (EAP) in place, last revised in 2011. Despite moderate risk assessment, the dam meets regulatory guidelines and has not been modified since its completion.
Wildwood Lake Estates Dam plays a crucial role in water resource management in St. Clair County, Illinois, highlighting the intersection of private ownership, regulatory oversight, and the need for effective risk management in ensuring the safety and sustainability of water resources in the region.
Year Completed |
1982 |
Dam Length |
785 |
Dam Height |
35 |
River Or Stream |
TRIB WEST FORK RICHLAND CREEK |
Primary Dam Type |
Earth |
Nid Storage |
1279 |
Outlet Gates |
None |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
35 |
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.
Wildwood Lake Estates Dam