Woodlake Estates Dam Reservoir Report
Last Updated: December 20, 2025
Woodlake Estates Dam, located in Springfield, Illinois, is a privately owned structure designed by Hoelscher Engineering for flood risk reduction along the Trib Spring Creek.
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Summary
With a dam height of 25.5 feet and a storage capacity of 138 acre-feet, the dam serves as a critical infrastructure to manage water flow and reduce the risk of flooding in the area. The dam also provides recreational opportunities for the community, enhancing its value beyond flood control.
The dam's spillway type is uncontrolled, with a width of 56 feet, allowing for the safe release of excess water during heavy rainfall events. Despite its high hazard potential, the dam is regularly inspected and maintained by the Illinois Department of Natural Resources to ensure the safety of nearby residents and properties. While the condition assessment is currently not available, the dam's risk assessment is moderate, indicating the need for ongoing risk management measures to mitigate potential issues.
In conclusion, Woodlake Estates Dam plays a crucial role in protecting the surrounding area from flooding while offering recreational benefits to the community. With its strategic design and regulatory oversight, the dam serves as a vital piece of infrastructure in managing water resources and climate challenges in Sangamon County, Illinois.
Dam Length |
375 |
Dam Height |
25.5 |
River Or Stream |
TRIB SPRING CREEK |
Primary Dam Type |
Earth |
Surface Area |
8.1 |
Drainage Area |
0.32 |
Nid Storage |
138 |
Outlet Gates |
Needle - 0 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Spring Creek At Springfield
|
7cfs |
South Fork Sangamon River Nr Rochester
|
11cfs |
Sangamon River At Riverton
|
125cfs |
Sangamon River At Petersburg
|
209cfs |
Lake Fork Near Cornland
|
17cfs |
Salt Creek Near Greenview
|
204cfs |
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.
Woodlake Estates Dam