Augusta Lake Dam Reservoir Report
Nearby: Hiland Lake Dam Musick Pond Dam
Last Updated: January 12, 2026
Augusta Lake Dam, located in Birmingham, Illinois, was completed in 1945 and is primarily used for recreation purposes and water supply.
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Summary
The dam, designed by M. Caslin & Co., is classified as an earth dam with a height of 34 feet and a length of 565 feet. It has a low hazard potential and moderate risk assessment, with a drainage area of 2.4 square miles and a maximum discharge of 2313 cubic feet per second.
The dam, situated on the Trib Flour Creek, is owned privately and regulated by the Illinois Department of Natural Resources. It features an uncontrolled spillway with a width of 106 feet and outlet gates that are also uncontrolled. The dam has a storage capacity of 513 acre-feet and is inspected every 5 years, with the last inspection conducted in May 2015. Despite a lack of available information on the current condition assessment, the dam poses minimal risk and provides valuable recreational opportunities for water resource and climate enthusiasts in the area.
Overall, Augusta Lake Dam serves as a vital water resource structure in Hancock County, Illinois, contributing to the region's water supply needs while offering recreational benefits to the local community. With its historical significance and functional design, the dam stands as a testament to engineering excellence and responsible water management practices. For those interested in water resource management and climate resilience, Augusta Lake Dam is a fascinating site to explore and study for its environmental impact and role in sustaining the surrounding ecosystem.
Year Completed |
1945 |
Dam Length |
565 |
Dam Height |
34 |
River Or Stream |
TRIB FLOUR CREEK |
Primary Dam Type |
Earth |
Drainage Area |
2.4 |
Nid Storage |
513 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
34 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
La Moine River At Colmar
|
67cfs |
La Moine River At Ripley
|
48cfs |
Bear Creek Near Marcelline
|
5cfs |
Spoon River At Seville
|
186cfs |
Wyaconda River Above Canton
|
13cfs |
Des Moines River At St. Francisville
|
1620cfs |
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.
Augusta Lake Dam