West Fork Big Creek Dam B-150 Reservoir Report
Last Updated: December 19, 2025
West Fork Big Creek Dam B-150, located in Bethany, Missouri, is a privately owned earth dam designed by the USDA NRCS and completed in 2008 for the primary purpose of flood risk reduction along the TR-Crabapple Branch river or stream.
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Summary
The dam stands at a height of 24.8 feet and has a structural height of 26 feet, with a length of 475 feet and a storage capacity of 105.4 acre-feet. Despite being categorized as having a low hazard potential, the dam is considered to have a moderate risk level.
With a surface area of 8 acres and a drainage area of 80 acres, West Fork Big Creek Dam B-150 plays a crucial role in managing water flow and reducing flood risks in the surrounding area. The dam features an uncontrolled spillway with a width of 30 feet, and although it currently has no outlet gates, it serves as a vital flood control structure in Harrison County. While the dam has not been rated for its condition, it represents a key asset in the local water resource management infrastructure.
West Fork Big Creek Dam B-150 is a significant contributor to the flood risk reduction efforts in the region, providing essential protection against potential inundation and ensuring the safety of nearby communities. As a privately owned structure with a moderate risk assessment, the dam highlights the importance of strategic water resource management and infrastructure development in mitigating the impacts of extreme weather events and maintaining overall water security. The collaboration between private owners, government agencies, and designers like the USDA NRCS underscores the importance of collective efforts in safeguarding our water resources and adapting to a changing climate.
Year Completed |
2008 |
Dam Length |
475 |
Dam Height |
24.8 |
River Or Stream |
TR-CRABAPPLE BRANCH |
Primary Dam Type |
Earth |
Surface Area |
8 |
Hydraulic Height |
24.8 |
Drainage Area |
80 |
Nid Storage |
105.4 |
Structural Height |
26 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
West Fork Big Creek Dam B-150