Coal & Crane Creek Structure 11 Reservoir Report
Last Updated: December 20, 2025
Coal & Crane Creek Structure 11, located in Meredosia, Illinois, is a privately-owned earth dam designed by the USDA NRCS in 1975 for flood risk reduction along the Trib Bluff Ditch.
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Summary
Standing at a height of 48 feet and stretching 268 feet in length, this structure has a storage capacity of 41 acre-feet and a drainage area of 0.13 square miles. The dam is primarily composed of stone core and built on a soil foundation, with uncontrolled spillways and outlets.
Despite being classified as having a low hazard potential, the dam still poses a moderate risk due to its age and condition assessment not being available. The last inspection in July 2017 revealed no major issues, but regular monitoring and maintenance are essential to ensure its continued effectiveness in flood risk reduction. With the Illinois Department of Natural Resources (IDNR) as the state regulatory agency overseeing its operations, the structure plays a crucial role in mitigating flooding in the area, under the jurisdiction of Schuyler County, Illinois.
As an integral part of the flood control infrastructure in the region, Coal & Crane Creek Structure 11 serves as a vital asset in protecting the surrounding community from potential inundation. With its modest storage capacity and moderate risk level, ongoing assessment and risk management measures are necessary to uphold its functionality and safety standards for water resource and climate enthusiasts invested in the preservation of this essential infrastructure.
Year Completed |
1975 |
Dam Length |
268 |
Dam Height |
48 |
River Or Stream |
TRIB BLUFF DITCH |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
0.13 |
Nid Storage |
41 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
48 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
La Moine River At Ripley
|
33cfs |
Illinois River At Valley City
|
2970cfs |
Sangamon River Near Oakford
|
356cfs |
La Moine River At Colmar
|
17cfs |
Spoon River At Seville
|
161cfs |
Bay Creek At Pittsfield
|
43cfs |
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 & Crane Creek Structure 11