East Fork Big Creek Dam E- 26 Reservoir Report
Last Updated: December 12, 2025
East Fork Big Creek Dam E-26, located in Harrison, Missouri, is a vital structure owned by the local government and designed by the USDA NRCS.
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Summary
Completed in 1989, this earth dam stands at a height of 24.5 feet and serves the primary purpose of flood risk reduction along the TR-East Fork Big Creek. With a maximum storage capacity of 85 acre-feet and a normal storage of 20 acre-feet, the dam plays a crucial role in managing water resources in the region.
Despite its low hazard potential, East Fork Big Creek Dam E-26 is considered to have a moderate risk level (3) and is currently not rated in terms of its condition assessment. With a spillway width of 30 feet and a drainage area of 32 square miles, the dam is equipped to handle a maximum discharge of 60 cubic feet per second. While there are no outlet gates associated with the dam, its uncontrolled spillway type ensures effective water discharge during times of excess flow. Overall, this structure highlights the importance of proper water resource management and flood protection measures in the face of changing climate conditions.
East Fork Big Creek Dam E-26, situated in the Rock Island District, showcases the collaborative efforts between local government authorities and federal agencies like the Natural Resources Conservation Service in addressing flood risks and safeguarding the surrounding communities. As climate enthusiasts and water resource experts continue to monitor and assess the impact of climate change on water infrastructure, structures like East Fork Big Creek Dam E-26 serve as essential components in promoting resilience and sustainable water management practices in the region.
Year Completed |
1989 |
Dam Length |
540 |
Dam Height |
24.5 |
River Or Stream |
TR-EAST FORK BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
24 |
Drainage Area |
32 |
Nid Storage |
85 |
Structural Height |
24 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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- 26