Harrison Lake Dam Reservoir Report
Last Updated: December 10, 2025
Harrison Lake Dam, located in Browns, Illinois, is a private earth dam with a primary purpose of recreation.
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Summary
Constructed in 1956 by the USDA NRCS, this dam stands at a height of 17 feet and has a length of 650 feet. It holds a storage capacity of 74 acre-feet, with a normal storage level of 39 acre-feet. The dam is regulated by the Illinois Department of Natural Resources and is inspected on a regular basis to ensure its safety and compliance with state regulations.
With a low hazard potential and a moderate risk assessment rating, Harrison Lake Dam is considered to be a relatively safe structure. It features an uncontrolled spillway with a width of 41 feet and outlet gates that are also uncontrolled. The dam is situated on the TRIB CROOKED CREEK and serves as a popular recreational spot for locals and visitors alike. Although the condition assessment of the dam is currently listed as "Not Available," regular inspections and maintenance ensure that it remains in good working order for the enjoyment and safety of all who visit the area.
Overall, Harrison Lake Dam is a well-maintained and regulated structure that provides both recreational opportunities and essential water resource management in the area. With its beautiful location in Edwards County, Illinois, this dam is a testament to the importance of responsible water infrastructure development and maintenance in the face of changing climate conditions. As a key feature in the Louisville District, Harrison Lake Dam continues to play a vital role in supporting the surrounding ecosystem and community while also offering a picturesque backdrop for outdoor enthusiasts to enjoy.
Year Completed |
1956 |
Dam Length |
650 |
Dam Height |
17 |
River Or Stream |
TRIB CROOKED CREEK |
Primary Dam Type |
Earth |
Nid Storage |
74 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bonpas Creek At Browns
|
0cfs |
Little Wabash River Below Clay City
|
33cfs |
Wabash River At Mt. Carmel
|
7310cfs |
Embarras River At Lawrenceville
|
64cfs |
Patoka River Near Princeton
|
853cfs |
Embarras River At Ste. Marie
|
30cfs |
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.
Harrison Lake Dam