Hardiman Pond Dam Reservoir Report
Nearby: England Reservoir Dam Ramsey Lake Dam
Last Updated: December 5, 2025
Hardiman Pond Dam, located in Vandalia, Illinois, was completed in 1977 by the USDA NRCS and serves multiple purposes, including fish and wildlife conservation, recreation, and other activities.
°F
°F
mph
Wind
%
Humidity
Summary
This private earth dam stands at 25 feet high and spans 330 feet, with a storage capacity of 34 acre-feet and a surface area of 3 acres. The dam is situated on Tr- Mitchell Creek and is under the jurisdiction of the Louisville District of the USACE.
Although the dam has a low hazard potential, its risk assessment is moderate, indicating the need for careful monitoring and management. The dam features an uncontrolled spillway with a width of 22 feet and an outlet gate system. While the condition assessment is not available, the dam is designated as non-USACE and has not been inspected recently, with no emergency action plan in place. Overall, Hardiman Pond Dam presents an opportunity for water resource and climate enthusiasts to explore the intersection of dam infrastructure, environmental conservation, and recreational use in the heart of Fayette County, Illinois.
Year Completed |
1977 |
Dam Length |
330 |
Dam Height |
25 |
River Or Stream |
Tr- Mitchell Creek |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
0.07 |
Nid Storage |
34 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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.
Hardiman Pond Dam