Hadley Creek Ws Str 1-7 Reservoir Report
Last Updated: December 19, 2025
Hadley Creek WS Str 1-7 is a privately owned earth dam located in Adams County, Illinois, near the city of Kinderhook.
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Summary
Built in 1958 by the USDA NRCS, this dam serves primarily for flood risk reduction on the Tr-Hadley Creek N Fork. With a dam height of 25 feet and a length of 370 feet, it has a storage capacity of 29 acre-feet and can handle a maximum discharge of 240 cubic feet per second.
Despite its age, Hadley Creek WS Str 1-7 is classified as having a low hazard potential and a moderate risk level. The dam features an uncontrolled spillway and outlet gates, with no associated locks. While the condition assessment is currently listed as "Not Available," the dam is inspected every 5 years by the Natural Resources Conservation Service. The surrounding area has a drainage area of 0.11 square miles and a surface area of 2 acres, making it a vital asset for managing the water resources in the region.
Water resource and climate enthusiasts will appreciate the role that Hadley Creek WS Str 1-7 plays in mitigating flood risks and protecting the local community. As a key infrastructure for flood risk reduction, this dam serves as a testament to the importance of proper water management in safeguarding against natural disasters. With its strategic location and design, Hadley Creek WS Str 1-7 stands as a vital component in the system of water resource infrastructure in Illinois, showcasing the ongoing efforts to ensure the resilience of our water resources in the face of changing climate conditions.
Year Completed |
1958 |
Dam Length |
370 |
Dam Height |
25 |
River Or Stream |
Tr- Hadley Creek N Fork |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
0.11 |
Nid Storage |
29 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bay Creek At Pittsfield
|
43cfs |
Bear Creek At Hannibal
|
2cfs |
Illinois River At Valley City
|
2970cfs |
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 Ws Str 1-7