Mill Creek Strcture 2 Dam Reservoir Report
Last Updated: December 19, 2025
Mill Creek Structure 2 Dam, also known as Mill Creek Impoundment 2, is a private dam located in Hutsonville, Illinois.
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Summary
Built in 1973 by the USDA NRCS, this earth dam stands at a height of 38 feet and spans 645 feet in length. Its primary purpose is flood risk reduction, with a storage capacity of 945 acre-feet and a normal storage level of 355 acre-feet.
Managed by the Illinois Department of Natural Resources, the dam features an uncontrolled spillway with a width of 154 feet. Despite its low hazard potential, the dam is considered to have moderate risk, with an inspection frequency of 5 years. While the condition assessment is not available, the dam's emergency action plan status and risk management measures are also unspecified. Although the dam has not undergone modifications in recent years, its overall risk level is rated at moderate.
Located on the tributary of Mill Creek and under the jurisdiction of the Louisville District of the US Army Corps of Engineers, Mill Creek Structure 2 Dam plays a crucial role in mitigating flood risks in the area. With its sturdy construction and efficient flood control mechanisms, the dam stands as a vital resource for water management and climate resilience in Clark County, Illinois.
Year Completed |
1973 |
Dam Length |
645 |
Dam Height |
38 |
River Or Stream |
TRIB MILL CREEK |
Primary Dam Type |
Earth |
Nid Storage |
945 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
38 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wabash River At Terre Haute
|
1770cfs |
North Fork Embarras River Near Oblong
|
5cfs |
Wabash River At Riverton Ind
|
1870cfs |
Big Raccoon Creek At Coxville
|
138cfs |
Embarras River At Ste. Marie
|
34cfs |
Busseron Creek Near Carlisle
|
452cfs |
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.
Mill Creek Strcture 2 Dam