East Fork Big Creek Dam E- 98 Reservoir Report
Last Updated: December 16, 2025
East Fork Big Creek Dam E-98, located in Harrison, Missouri, was completed in 1985 by the USDA NRCS and serves as a crucial flood risk reduction structure along the TR-East Fork Big Creek.
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Summary
This earth dam stands at a height of 32.5 feet and has a storage capacity of 91 acre-feet, with a normal storage level of 22 acre-feet. With a low hazard potential and a moderate risk assessment rating, this dam plays a vital role in mitigating flood risks in the region.
Despite being a relatively small dam with a surface area of only 2 acres, East Fork Big Creek Dam E-98 is an essential component of the local flood control infrastructure. The dam features an uncontrolled spillway with a width of 35 feet and a maximum discharge capacity of 70 cubic feet per second. While it has not been rated for its condition, the dam is regularly inspected as part of its risk management measures to ensure its continued effectiveness in protecting the surrounding area from potential flooding events.
Owned and operated by the local government, East Fork Big Creek Dam E-98 exemplifies the collaborative effort between federal and state agencies to safeguard communities from the impacts of extreme weather events. As a key structure in the Rock Island District, this dam stands as a testament to the importance of proactive flood risk reduction efforts in maintaining the resilience of water resources and climate conditions in the region.
Year Completed |
1985 |
Dam Length |
370 |
Dam Height |
32.5 |
River Or Stream |
TR-EAST FORK BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
32 |
Drainage Area |
12.8 |
Nid Storage |
91 |
Structural Height |
32 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
33 |
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- 98