East Yellow Creek B- 42 Reservoir Report
Last Updated: December 16, 2025
East Yellow Creek B-42 is a vital Earth dam located in Linn, Missouri, designed by the USDA NRCS to reduce flood risks along the TR-East Yellow river.
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Summary
Completed in 2001, this structure stands at a height of 23.8 feet, with a hydraulic height of 21 feet and a structural height of 23 feet. With a capacity to hold 109 acre-feet of water, it serves as a crucial flood risk reduction measure for the surrounding area, covering a drainage area of 25.6 square miles.
Despite its low hazard potential and moderate risk assessment, East Yellow Creek B-42 has not been rated for its current condition. The dam's spillway, with a width of 24 feet, is uncontrolled, and there are no outlet gates associated with the structure. While it has not been modified since its completion, regular inspections are conducted to ensure its safety and effectiveness. Managed by the Natural Resources Conservation Service, this dam plays a key role in water resource management in the region.
With a primary purpose of flood risk reduction, East Yellow Creek B-42 provides essential protection to the surrounding areas from potential inundation. While it has not been state-regulated or permitted, the structure continues to stand as a crucial component of the local water management infrastructure. As a site of interest for water resource and climate enthusiasts, this dam showcases the importance of proactive measures in mitigating flood risks and safeguarding communities against natural disasters.
Year Completed |
2001 |
Dam Length |
635 |
Dam Height |
23.8 |
River Or Stream |
TR-EAST YELLOW |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
21 |
Drainage Area |
25.6 |
Nid Storage |
109 |
Structural Height |
23 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
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 B- 42