Shoal Creek Structure 5 Dam Reservoir Report
Last Updated: December 6, 2025
Shoal Creek Structure 5 Dam, located in Montgomery County, Illinois, is a vital piece of infrastructure designed by the USDA NRCS to manage flood risks along the Middle Fork Shoal Creek.
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Summary
Completed in 1973, this earth dam stands at a height of 30 feet and stretches 480 feet in length, with a storage capacity of 1,010 acre-feet. The dam's primary purpose is flood risk reduction, serving as a crucial barrier to protect surrounding areas from potential inundation.
Managed by local government authorities and regulated by the Illinois Department of Natural Resources, Shoal Creek Structure 5 Dam has a high hazard potential due to its location and function. Despite its age, the dam's condition assessment is not available, emphasizing the need for regular inspections and maintenance. With a moderate risk rating, efforts are likely in place to mitigate potential hazards and ensure the dam's continued effectiveness in safeguarding the community.
As part of the St. Louis District, the Shoal Creek Structure 5 Dam plays a significant role in water resource management within the region. Its uncontrolled spillway, wide spillway width, and high storage capacity make it a critical piece of infrastructure in the event of heavy rainfall or rising water levels. Ensuring the dam's structural integrity and operational readiness is essential in safeguarding the surrounding areas and preserving the natural environment for generations to come.
Year Completed |
1973 |
Dam Length |
480 |
Dam Height |
30 |
River Or Stream |
TRIB MIDDLE FORK SHOAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
26 |
Drainage Area |
2.1 |
Nid Storage |
1010 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
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.
Shoal Creek Structure 5 Dam