Sherwood Lake Subdivision Dam Reservoir Report
Nearby: Brian Lake Dam The Grove Dam
Last Updated: December 21, 2025
Sherwood Lake Subdivision Dam, located in Downs, Illinois, is a private dam built in 2002 by LEWIS, YOCKEY & BROWN, INC.
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Summary
The dam serves primarily for recreation purposes and stands at a height of 21.4 feet with a length of 500 feet. It has a storage capacity of 96.7 acre-feet and covers a surface area of 12.6 acres, drawing water from TRIB KICKAPOO CREEK. The dam is regulated by the Illinois Department of Natural Resources and undergoes regular inspections to ensure its safety and functionality.
Despite being classified as having a low hazard potential, the dam is rated as having a moderate risk level, emphasizing the importance of ongoing risk management measures. The dam features an uncontrolled spillway and outlet gates, allowing for controlled water release during periods of excess flow. While the dam has not been modified in recent years and its condition assessment is not available, it is crucial for stakeholders to stay vigilant and prepared for any potential emergencies. Overall, Sherwood Lake Subdivision Dam serves as a vital recreational resource in McLean County, Illinois, while requiring careful monitoring and maintenance to ensure safety and functionality for water resource and climate enthusiasts.
Year Completed |
2002 |
Dam Length |
500 |
Dam Height |
21.4 |
River Or Stream |
TRIB KICKAPOO CREEK |
Primary Dam Type |
Earth |
Surface Area |
12.6 |
Drainage Area |
0.49 |
Nid Storage |
96.7 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
21 |
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.
Sherwood Lake Subdivision Dam