West Fork Big Creek Dam S- 34 Reservoir Report

Last Updated: December 15, 2025

West Fork Big Creek Dam S-34, located in Harrison County, Missouri, was completed in 2006 by the USDA NRCS and serves as a crucial flood risk reduction structure along Shane Creek.


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Summary

This earth dam stands at a height of 23.9 feet and has a structural height of 31 feet, with a maximum storage capacity of 112.5 acre-feet and a normal storage level of 29 acre-feet. The dam, with a spillway width of 40 feet, plays a vital role in managing water flow and reducing the risk of flooding in the area.

Despite its low hazard potential, West Fork Big Creek Dam S-34 has been rated as having a very high risk due to its location and potential impact in the event of a failure. While the dam is currently not regulated or inspected by the state, it remains a critical infrastructure for flood control and water resource management in the region. With its stone core and soil foundation, the dam demonstrates a commitment to sustainable water management practices and highlights the importance of maintaining and monitoring such structures to ensure public safety and environmental protection.

Year Completed

2006

Dam Length

550

Dam Height

23.9

River Or Stream

SHANE CREEK

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

23.9

Drainage Area

187

Nid Storage

112.5

Structural Height

31

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

31
       
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.