East Fork Big Creek Dam E- 48 Reservoir Report
Last Updated: December 13, 2025
Located in Bethany, Missouri, the East Fork Big Creek Dam E-48 serves as a vital flood risk reduction structure along the East Fork Big Creek.
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Summary
Built in 1987 by the USDA NRCS, this earth-type dam stands at a height of 22 feet and a length of 485 feet, with a storage capacity of 77 acre-feet. Its primary purpose is to mitigate the impact of flooding in the region, providing protection to the surrounding area.
With a low hazard potential and a moderate risk assessment rating, the East Fork Big Creek Dam E-48 is a crucial component of the local water resource management system. While not currently regulated by the state, this dam plays a key role in safeguarding the community against potential flooding events. Despite its simple design and uncontrolled spillway type, the dam continues to effectively fulfill its intended purpose and contribute to the overall resilience of the region's water infrastructure.
As a significant structure in the Rock Island District, the East Fork Big Creek Dam E-48 stands as a testament to the importance of proactive flood risk reduction measures. While not rated for its condition, this dam serves as a valuable asset to the community, showcasing the collaborative efforts of local government and federal agencies in ensuring the safety and security of water resources in Harrison County, Missouri.
Year Completed |
1987 |
Dam Length |
485 |
Dam Height |
22 |
River Or Stream |
EAST FORK BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
22 |
Drainage Area |
275.2 |
Nid Storage |
77 |
Structural Height |
24 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
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.
East Fork Big Creek Dam E- 48