Hadley Creek Ws Str 29-6 Reservoir Report
Last Updated: December 20, 2025
Hadley Creek WS Str 29-6 is a vital water management structure located in Kinderhook, Illinois, designed by the USDA NRCS to mitigate flood risks in the area.
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Summary
Completed in 1958, this Earth-type dam stands at 31 feet high and spans 377 feet in length, with a storage capacity of 47 acre-feet. The dam's primary purpose is flood risk reduction, serving as a crucial safeguard for the surrounding community along the TR- Hadley Creek S river.
Managed by the Natural Resources Conservation Service, Hadley Creek WS Str 29-6 has a low hazard potential and a moderate risk assessment rating. The dam's uncontrolled spillway and outlet gates help regulate water flow, with a maximum discharge capacity of 230 cubic feet per second. Despite its age, the dam's condition assessment is not available, and its last inspection was conducted in July 2016, with a scheduled inspection frequency of every 5 years.
Located in Pike County, Illinois, Hadley Creek WS Str 29-6 plays a critical role in water resource management and flood control efforts in the region. With state-regulated operations and maintenance, this structure continues to uphold its flood risk reduction mandate, ensuring the safety and protection of the local community against potential water-related hazards.
Year Completed |
1958 |
Dam Length |
377 |
Dam Height |
31 |
River Or Stream |
TR- HADLEY CREEK S |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
0.15 |
Nid Storage |
47 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bay Creek At Pittsfield
|
43cfs |
Bear Creek At Hannibal
|
2cfs |
Salt River Near New London
|
82cfs |
Spencer Cr. Bl Plum Cr. Nr Frankford
|
24cfs |
Illinois River At Valley City
|
2970cfs |
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 29-6