Tedrick Lake Dam Reservoir Report
Nearby: Martin Family Dam L & N Reservoir
Last Updated: December 6, 2025
Tedrick Lake Dam, located in Jefferson County, Illinois, was completed in 1999 and serves primarily for recreational purposes.
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Summary
The dam stands at a height of 29 feet and spans a length of 400 feet, with a storage capacity of 320 acre-feet. Situated on the TRIB DODDS CREEK tributary, the dam is regulated by the Illinois Department of Natural Resources and undergoes regular inspections to ensure its structural integrity.
With a low hazard potential and a moderate risk assessment rating of 3, Tedrick Lake Dam is considered to pose a manageable level of risk. The dam features an uncontrolled spillway with a width of 162 feet and has a maximum discharge capacity of 640 cubic feet per second. The surrounding area encompasses 23 acres of surface water and a drainage area of 1.03 square miles, providing ample recreational opportunities for visitors.
Owned privately and designed by ROUNDTABLE, Tedrick Lake Dam is a key feature within the Louisville District of the US Army Corps of Engineers. Despite its low hazard potential, the dam's risk management measures and emergency preparedness protocols are not readily available. As water resource and climate enthusiasts, it is crucial to stay informed about the condition and management of such vital structures to ensure the safety and sustainability of our water resources.
Year Completed |
1999 |
Dam Length |
400 |
Dam Height |
29 |
River Or Stream |
TRIB DODDS CREEK |
Primary Dam Type |
Earth |
Surface Area |
23 |
Drainage Area |
1.03 |
Nid Storage |
320 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
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.
Tedrick Lake Dam