Big Creek-Hurricane Creek B-121 Reservoir Report
Last Updated: December 19, 2025
Big Creek-Hurricane Creek B-121 is a key flood risk reduction structure located in Carroll, Missouri.
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Summary
Built in 1999 by the USDA NRCS, this earth dam stands at 23 feet high with a hydraulic height of 18 feet and a dam length of 570 feet. It serves the primary purpose of flood risk reduction for the TR-Big Creek watershed, providing storage of up to 66 acre-feet of water and covering a surface area of 4.51 acres.
With a low hazard potential and a moderate risk assessment rating, Big Creek-Hurricane Creek B-121 plays a crucial role in mitigating flood events in the region. Despite not being state regulated, this dam remains an essential infrastructure for the local government in managing water resources and protecting the surrounding communities. With its uncontrolled spillway type and a maximum discharge of 114.9 cubic feet per second, this structure is designed to handle moderate flood events and safeguard the area from potential inundation.
As a part of the Rock Island District, Big Creek-Hurricane Creek B-121 showcases the collaborative efforts of federal agencies like the Natural Resources Conservation Service in constructing and maintaining vital water resource infrastructure. With its strategic location in the TR-Big Creek watershed and its significant impact on flood risk reduction, this dam serves as a testament to the importance of proactive water management in the face of changing climate patterns.
Year Completed |
1999 |
Dam Length |
570 |
Dam Height |
20 |
River Or Stream |
TR-BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
4.51 |
Hydraulic Height |
18 |
Drainage Area |
152 |
Nid Storage |
66 |
Structural Height |
23 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Grand River Near Sumner
|
223cfs |
Grand River At Chillicothe
|
361cfs |
Wakenda Creek At Carrollton
|
39cfs |
Shoal Creek Near Braymer Mo
|
0cfs |
Locust Creek Near Linneus
|
31cfs |
Mussel Fork Near Musselfork
|
10cfs |
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 B-121