Heartland Oaks 1 Dam Reservoir Report
Last Updated: December 21, 2025
Heartland Oaks 1 Dam, located in Smithton, Illinois, is a privately owned earth dam with a primary purpose of recreation.
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Summary
Standing at a height of 29 feet and spanning 700 feet in length, the dam has a storage capacity of 400 acre-feet and covers a surface area of 23 acres. Situated on the Trib Richland Creek, the dam's low hazard potential and moderate risk assessment make it a vital structure for water resource and climate enthusiasts to monitor.
Managed by the Illinois Department of Natural Resources (IDNR), Heartland Oaks 1 Dam is equipped with an uncontrolled spillway and has no outlet gates. The dam was last inspected in May 2017 and is subject to regular inspections every 5 years. Despite a lack of available condition assessment data, the dam's low hazard potential and moderate risk assessment indicate a need for ongoing monitoring and risk management measures to ensure its safety and functionality for recreational activities and water resource conservation in the St. Clair County area. Enthusiasts can appreciate the unique design and purpose of this vital structure in the local water management system.
Dam Length |
700 |
Dam Height |
29 |
River Or Stream |
TRIB RICHLAND CREEK |
Primary Dam Type |
Earth |
Surface Area |
23 |
Drainage Area |
0.05 |
Nid Storage |
400 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
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.
Heartland Oaks 1 Dam