St. Elmo Old City Reservoir Dam Reservoir Report
Last Updated: December 5, 2025
The St.
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Summary
Elmo Old City Reservoir Dam, located in Fayette, Illinois, is a historic structure completed in 1903 with a primary purpose of recreation. This earth dam stands at a height of 23 feet and spans 715 feet, containing a storage capacity of 314 acre-feet. It serves a dual purpose of providing water supply and recreational opportunities, attracting water resource and climate enthusiasts alike to its scenic surroundings.
Managed by the local government and regulated by the Illinois Department of Natural Resources, the dam's significant hazard potential necessitates regular inspections, with a last recorded assessment in November 2016. Situated on the Bricky Branch stream, the dam's uncontrolled spillway and outlet gates contribute to its moderate risk assessment, highlighting the importance of ongoing risk management measures to ensure the safety and integrity of the structure.
With its rich history and functional significance, the St. Elmo Old City Reservoir Dam remains a focal point for water enthusiasts and climate advocates, offering a glimpse into the intersection of water resource management and recreational enjoyment in the heart of Illinois. Its distinctive design and strategic location make it a valuable asset for the community and a key player in the region's water supply and conservation efforts.
Year Completed |
1903 |
Dam Length |
715 |
Dam Height |
23 |
River Or Stream |
BRICKYARD BRANCH |
Primary Dam Type |
Earth |
Surface Area |
25 |
Drainage Area |
3.8 |
Nid Storage |
314 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
23 |
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.
St. Elmo Old City Reservoir Dam