Izaak Walton Lake Dam Reservoir Report
Nearby: Lake Santa Fe Dam White Oak Lake Dam
Last Updated: January 12, 2026
Izaak Walton Lake Dam, located in Woodford, Illinois, is a private dam with a primary purpose of recreation.
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Summary
Completed in 1971, this Earth dam stands at a height of 33 feet and has a length of 505 feet, providing a storage capacity of 170 acre-feet. The dam is situated on the TRIB PARTRIDGE CREEK and is regulated by the Illinois Department of Natural Resources (IDNR), with state permitting, inspection, and enforcement in place.
Despite its low hazard potential, the dam at Izaak Walton Lake is subject to moderate risk (level 3), though specific risk management measures are not provided in the available data. The dam features uncontrolled spillways and outlet gates, with a five-year inspection frequency. The dam's location in Spring Bay, Illinois, offers enthusiasts of water resources and climate a fascinating site to explore and appreciate the intersection of man-made structures with natural ecosystems.
For water resource and climate enthusiasts, Izaak Walton Lake Dam presents a unique opportunity to study the impact of dams on local hydrology and recreational opportunities in the region. With its association with the TRIB PARTRIDGE CREEK and its construction in 1971, the dam serves as a point of interest for those interested in the management and regulation of water resources in Illinois. The dam's moderate risk level and low hazard potential also offer a compelling case study for understanding the complexities of dam safety and risk assessment in the context of changing climate conditions.
Year Completed |
1971 |
Dam Length |
505 |
Dam Height |
33 |
River Or Stream |
TRIB PARTRIDGE CREEK |
Primary Dam Type |
Earth |
Nid Storage |
170 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Farm Creek At Farmdale
|
6cfs |
Fondulac Creek Near East Peoria
|
2cfs |
Mackinaw River Near Congerville
|
140cfs |
Illinois River At Henry
|
15900cfs |
Illinois River At Kingston Mines
|
17000cfs |
Mackinaw River Near Green Valley
|
272cfs |
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.
Izaak Walton Lake Dam