Big Creek-Hurricane Creek S- 7 Reservoir Report
Last Updated: December 19, 2025
Big Creek-Hurricane Creek S-7 is a local government-owned earth dam located in Carroll County, Missouri.
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Summary
Constructed in 2002 by USDA NRCS, the dam stands at a height of 23 feet and has a hydraulic height of 20 feet, serving the primary purpose of flood risk reduction along the TR-Big Creek. With a storage capacity of 53 acre-feet and a drainage area of 441.6 square miles, the dam plays a crucial role in mitigating flood risks in the region.
Despite its low hazard potential, Big Creek-Hurricane Creek S-7 has a moderate risk assessment rating of 3, indicating the importance of ongoing monitoring and maintenance. The dam features an uncontrolled spillway with a width of 20 feet and is designed for maximum discharge of 94 cubic feet per second. While the condition assessment is currently not rated, the dam has not undergone any modifications since its completion, highlighting the need for regular inspections to ensure its structural integrity and effectiveness in flood control.
Situated within the Rock Island District and overseen by the Natural Resources Conservation Service, Big Creek-Hurricane Creek S-7 serves as a vital infrastructure for the local community in managing flood risks and protecting the surrounding areas from potential inundation. Despite not having a state regulatory agency overseeing its operations, the dam's critical role in flood risk reduction underscores the importance of continued monitoring and adherence to safety guidelines to ensure its long-term functionality and resilience in the face of changing climate conditions.
Year Completed |
2002 |
Dam Length |
725 |
Dam Height |
23 |
River Or Stream |
TR-BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.1 |
Hydraulic Height |
20 |
Drainage Area |
441.6 |
Nid Storage |
53 |
Structural Height |
23 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wakenda Creek At Carrollton
|
8cfs |
Missouri River At Waverly
|
26800cfs |
Grand River Near Sumner
|
220cfs |
Shoal Creek Near Braymer Mo
|
12cfs |
Grand River At Chillicothe
|
361cfs |
Crooked River Near Richmond
|
4cfs |
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.
Big Creek-Hurricane Creek S- 7