East Fork Big Creek Dam E- 75 Reservoir Report
Last Updated: December 17, 2025
East Fork Big Creek Dam E- 75, located in Harrison, Missouri, was completed in 1985 by the USDA NRCS with a primary purpose of flood risk reduction along the TR-East Fork Big Creek.
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Summary
This earth dam stands at a height of 28.5 feet and has a hydraulic height of 28 feet, providing a maximum storage capacity of 58 acre-feet and covering a surface area of 9 acres. Despite being uncontrolled, the spillway width of 40 feet ensures a maximum discharge of 80 cubic feet per second, safeguarding the surrounding area from potential flood hazards.
Situated in the Rock Island District with a low hazard potential, East Fork Big Creek Dam E- 75 has not been rated for condition assessment and lacks an Emergency Action Plan (EAP). However, its risk assessment is moderate, indicating a level 3 risk. The dam has not undergone any modifications in recent years and does not have outlet gates. While there are no associated structures or locks, the dam's stone core and soil foundation provide stability and durability. With a state-regulated status of 'No,' this dam serves as a crucial infrastructure for flood protection in the region, managed by the local government in Bethany.
East Fork Big Creek Dam E- 75 serves as a vital asset for flood risk reduction in the region, designed and constructed by the Natural Resources Conservation Service. With a strategic location in S08,T64N,R27W, the dam plays a crucial role in managing the water resources of the area and protecting the community from potential flooding events. Despite its low hazard potential and moderate risk assessment, the dam requires further evaluation and the development of an Emergency Action Plan to ensure preparedness for any unforeseen emergencies. As a significant structure in the local water resource management system, East Fork Big Creek Dam E- 75 stands as a testament to effective flood risk reduction efforts in Missouri.
Year Completed |
1985 |
Dam Length |
460 |
Dam Height |
28.5 |
River Or Stream |
TR-EAST FORK BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
28 |
Drainage Area |
269.44 |
Nid Storage |
58 |
Structural Height |
28 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
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- 75