West Fork Big Creek Dam B-111 Reservoir Report
Last Updated: February 6, 2026
West Fork Big Creek Dam B-111, located in Bethany, Missouri, was completed in 1992 by the USDA NRCS for the purpose of flood risk reduction along the West Fork Big Creek.
Summary
This earth dam stands at a height of 25 feet and spans 430 feet in length, with a storage capacity of 53 acre-feet and a drainage area of 200 square miles. Despite its low hazard potential, the dam is considered to have a moderate risk level, with a condition assessment of "Not Rated."
Owned by the local government and operated by the Natural Resources Conservation Service, West Fork Big Creek Dam B-111 is equipped with an uncontrolled spillway and no outlet gates. While it does not fall under state regulation or jurisdiction, the dam serves as a crucial structure in mitigating flood risks in the region. With a risk management plan in place and a commitment to ensuring public safety, this dam exemplifies the importance of sustainable water resource management in the face of changing climate conditions.
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15-Day Weather Outlook
Year Completed |
1992 |
Dam Length |
430 |
Dam Height |
25 |
River Or Stream |
TR-WEST FORK BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
25 |
Drainage Area |
200 |
Nid Storage |
53 |
Structural Height |
25 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
5-Day Hourly Forecast Detail
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-111