Big Creek-Hurricane Creek B- 56 Reservoir Report

Last Updated: December 19, 2025

Big Creek-Hurricane Creek B-56 is a flood risk reduction structure located in Carroll, Missouri.


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Summary

Constructed in 1999, this earth dam stands at 20 feet tall with a length of 570 feet and a storage capacity of 67 acre-feet. Managed by the USDA NRCS, this dam serves the primary purpose of flood risk reduction along the TR-Big Creek. With a low hazard potential and a moderate risk assessment rating, the dam plays a crucial role in protecting the surrounding area from potential flooding events.

Despite being non-regulated by the state, Big Creek-Hurricane Creek B-56 has an uncontrolled spillway and a maximum discharge capacity of 88 cubic feet per second. The dam's condition is currently not rated, but it undergoes inspections every year to ensure its structural integrity. With a surface area of 1.4 acres and a drainage area of 32 square miles, this dam has proven to be an essential asset in managing water resources and mitigating the impact of extreme weather events in the region. Enthusiasts of water resource management and climate resilience will find Big Creek-Hurricane Creek B-56 to be a fascinating case study in flood control infrastructure.

Year Completed

1999

Dam Length

570

Dam Height

17

River Or Stream

TR-BIG CREEK

Primary Dam Type

Earth

Surface Area

1.4

Hydraulic Height

15

Drainage Area

32

Nid Storage

67

Structural Height

20

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

20
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.