East Fork Big Creek Dam E- 30 Reservoir Report
Last Updated: December 12, 2025
East Fork Big Creek Dam E-30, located in Harrison, Missouri, was completed in 1988 by the USDA NRCS with the primary purpose of flood risk reduction along the East Fork Big Creek.
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Summary
This earth dam stands at a height of 20 feet and has a maximum storage capacity of 108 acre-feet, serving as a critical infrastructure for managing water resources in the region. The dam's low hazard potential and moderate risk assessment make it an important asset for climate and water resource management enthusiasts.
With a drainage area of 134.4 square miles, East Fork Big Creek Dam E-30 plays a vital role in controlling water flow and ensuring the safety of nearby communities. The dam features an uncontrolled spillway with a width of 30 feet, providing a mechanism for releasing excess water during periods of high discharge. Despite its importance, the dam has not been rated for its condition assessment, highlighting the need for ongoing monitoring and maintenance to ensure its continued effectiveness in mitigating flood risks and protecting the environment.
In collaboration with local government agencies, the Natural Resources Conservation Service oversees the operations of East Fork Big Creek Dam E-30, underscoring the importance of coordinated efforts in managing water resources and adapting to changing climate conditions. As climate change continues to pose challenges to water management, dams like E-30 play a crucial role in enhancing resilience and safeguarding communities from the impacts of extreme weather events.
Year Completed |
1988 |
Dam Length |
340 |
Dam Height |
20 |
River Or Stream |
EAST FORK BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
20 |
Drainage Area |
134.4 |
Nid Storage |
108 |
Structural Height |
22 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
22 |
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- 30