City Of Bethany Dam Reservoir Report
Last Updated: December 16, 2025
The City of Bethany Dam, located in Harrison County, Missouri, was completed in 1960 and serves as a vital resource for both recreation and water supply.
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Summary
With a height of 60 feet and a length of 1000 feet, the dam impounds the waters of a tributary to West Fork Big Creek, creating a reservoir with a storage capacity of 3850 acre-feet. This earth dam, constructed with a stone core and rock foundation, has a spillway width of 50 feet and is regulated by the DAM AND RESERVOIR SAFETY PROG in Missouri.
The dam's hazard potential is classified as high, but its condition assessment is deemed satisfactory as of December 2007. Regular inspections are conducted, with the last one occurring in August 2016, to ensure the safety and stability of the structure. The dam's emergency action plan was last revised in November 2014, and the risk assessment indicates a moderate level of risk (3). The City of Bethany Dam plays a crucial role in the water management infrastructure of the region, providing vital resources for both human consumption and recreational activities while being closely monitored for safety and regulatory compliance.
Year Completed |
1960 |
Dam Length |
1000 |
Dam Height |
60 |
River Or Stream |
TRIBUTARY TO WEST FORK BIG CK |
Primary Dam Type |
Earth |
Surface Area |
76 |
Drainage Area |
733 |
Nid Storage |
3850 |
Structural Height |
60 |
Outlet Gates |
Valve |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
60 |
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.
City Of Bethany Dam