East Yellow Creek L- 26 Reservoir Report
Last Updated: December 24, 2025
East Yellow Creek L-26, located in Linn, Missouri, is a flood risk reduction structure designed by the USDA NRCS and completed in 2006.
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Summary
This earth dam stands at 28.2 feet in height and spans 462 feet in length, holding a storage capacity of 182.5 acre-feet. With a primary purpose of flood risk reduction, the dam helps mitigate potential flooding along the TR-LONG BRANCH river or stream in the Rock Island District.
Despite being unregulated by the state and rated as having low hazard potential, East Yellow Creek L-26 serves an important role in managing water resources in the area. Its uncontrolled spillway, with a width of 40 feet, allows for controlled release of excess water during times of high discharge. The structure's moderate risk assessment rating highlights the need for ongoing monitoring and maintenance to ensure its effectiveness in protecting against floods and preserving the surrounding environment. For water resource and climate enthusiasts, East Yellow Creek L-26 offers an intriguing case study in flood risk management and the intersection of infrastructure and natural ecosystems.
Year Completed |
2006 |
Dam Length |
462 |
Dam Height |
28.2 |
River Or Stream |
TR-LONG BRANCH |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
26 |
Drainage Area |
281.6 |
Nid Storage |
182.5 |
Structural Height |
29 |
Outlet Gates |
Uncontrolled |
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 Yellow Creek L- 26