East Fork Big Creek Dam E- 33 Reservoir Report
Last Updated: December 15, 2025
East Fork Big Creek Dam E- 33, also known as Site E-33, is a local government-owned dam located in Bethany, Missouri.
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Summary
Built in 1989 by USDA NRCS, this earth dam stands at a height of 25 feet and has a structural height of 27 feet. With a primary purpose of flood risk reduction, the dam has a storage capacity of 156 acre-feet and serves to protect the surrounding area from potential flooding events along the East Fork Big Creek.
The dam, part of the Rock Island District, has a low hazard potential and is currently in a not rated condition. While it has not been inspected recently, the risk assessment for the dam is moderate. With a drainage area of 339.2 square miles, the dam plays a crucial role in managing water resources in the region and ensuring the safety of the local community. Despite not being state regulated or permitted, East Fork Big Creek Dam E- 33 remains an essential infrastructure for flood control in Harrison County, Missouri.
As water resource and climate enthusiasts, understanding the significance of dams like East Fork Big Creek Dam E- 33 is essential in managing and adapting to the changing climate conditions. With its capacity to mitigate flood risks and protect communities, this dam represents a vital piece of infrastructure that contributes to the overall resilience of the region in the face of environmental challenges.
Year Completed |
1989 |
Dam Length |
550 |
Dam Height |
25 |
River Or Stream |
EAST FORK BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
25 |
Drainage Area |
339.2 |
Nid Storage |
156 |
Structural Height |
27 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
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- 33