Big Creek-Hurricane Creek D- 7 Reservoir Report

Last Updated: December 19, 2025

Big Creek-Hurricane Creek D-7 is a local government-owned earth dam located in Carroll County, Missouri, near the city of Dewitt.


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Summary

Completed in 2010, this dam serves the primary purpose of flood risk reduction along the TR-Missouri River. Standing at a height of 22.5 feet with a structural height of 29 feet and a length of 520 feet, this dam has a storage capacity of 101.8 acre-feet and covers a surface area of 7.2 acres.

Managed by the Natural Resources Conservation Service, Big Creek-Hurricane Creek D-7 has a low hazard potential and a moderate risk assessment rating. While it has not been rated for its condition assessment, the dam is currently not regulated or inspected by the state. With a spillway type of uncontrolled and a maximum discharge of 106.4 cubic feet per second, this dam plays a crucial role in mitigating flood risks in the area.

Overall, Big Creek-Hurricane Creek D-7 is an essential infrastructure for flood risk reduction in Carroll County, Missouri. Its strategic location and design characteristics make it a key player in managing water resources and protecting the surrounding communities from potential flooding events along the TR-Missouri River.

Year Completed

2010

Dam Length

520

Dam Height

22.5

River Or Stream

TR-MISSOURI RIVER

Primary Dam Type

Earth

Surface Area

7.2

Hydraulic Height

22.5

Drainage Area

243.01

Nid Storage

101.8

Structural Height

29

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

29
       
Seasonal Comparison

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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.