Hadley Creek 2 Lake Dam Reservoir Report
Last Updated: December 19, 2025
Hadley Creek 2 Lake Dam, located in Adams County, Illinois, is a privately owned structure built in 1959 by the USDA NRCS.
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Summary
This earth dam stands at a height of 33 feet and serves the primary purpose of flood risk reduction along the North Fork Hadley Creek. With a storage capacity of 914 acre-feet, the dam plays a crucial role in mitigating potential flooding in the area.
Managed by the Illinois Department of Natural Resources, this dam is also designated for recreational use, highlighting its dual importance in both flood control and leisure activities. The dam features an uncontrolled spillway with a width of 97 feet, ensuring efficient water discharge during high flow events. Despite being categorized as having a low hazard potential, the dam undergoes regular inspections every 5 years to maintain its structural integrity and safety standards.
Overall, Hadley Creek 2 Lake Dam demonstrates a balanced approach to water resource management, incorporating flood risk reduction measures with recreational opportunities. Its strategic location and design make it a vital asset for the community, safeguarding against potential flood hazards while also offering a space for recreational activities along the North Fork Hadley Creek. As climate change continues to impact water resources, structures like Hadley Creek 2 Lake Dam play a crucial role in adapting to and mitigating the effects of a changing climate.
Year Completed |
1959 |
Dam Length |
591 |
Dam Height |
33 |
River Or Stream |
NORTH FORK HADLEY CREEK |
Primary Dam Type |
Earth |
Nid Storage |
914 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bay Creek At Pittsfield
|
43cfs |
Illinois River At Valley City
|
2970cfs |
Bear Creek At Hannibal
|
2cfs |
Salt River Near New London
|
82cfs |
Spencer Cr. Bl Plum Cr. Nr Frankford
|
24cfs |
North River At Palmyra
|
15cfs |
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.
Hadley Creek 2 Lake Dam