Coal And Crane Creek Structure 6 Reservoir Report
Last Updated: December 20, 2025
Coal and Crane Creek Structure 6, located in LaGrange, Illinois, is a privately owned dam constructed in 1971 by the USDA NRCS.
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Summary
This earth dam stands at a height of 23 feet and spans 500 feet, with a storage capacity of 120 acre-feet. The primary purpose of the dam is categorized as 'Other', and it is regulated by the Illinois Department of Natural Resources.
The structure's hazard potential is classified as low, with a moderate risk assessment rating of 3. It features an uncontrolled spillway with a width of 40 feet and is inspected every 5 years to ensure its integrity and safety. The dam's condition assessment is currently listed as 'Not Available', and there is no Emergency Action Plan (EAP) prepared for this site at present.
Overall, Coal and Crane Creek Structure 6 serves as a key component in the water resource management of the area, providing essential flood control and water storage capabilities. Its historical significance, combined with its current regulatory status and risk assessment, underscores the importance of ongoing monitoring and maintenance to ensure the safety and effectiveness of this critical infrastructure.
Year Completed |
1971 |
Dam Length |
500 |
Dam Height |
23 |
River Or Stream |
TRIB LAMOINE RIVER |
Primary Dam Type |
Earth |
Nid Storage |
120 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
La Moine River At Ripley
|
33cfs |
Illinois River At Valley City
|
2970cfs |
Bay Creek At Pittsfield
|
43cfs |
La Moine River At Colmar
|
17cfs |
Sangamon River Near Oakford
|
356cfs |
Spoon River At Seville
|
161cfs |
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.
Coal And Crane Creek Structure 6