East Yellow Creek B- 33 Reservoir Report

Last Updated: December 16, 2025

East Yellow Creek B-33 is a local government-owned earth dam located in Linn, Missouri, with a primary purpose of flood risk reduction.


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Summary

Built in 2001 by USDA NRCS, this dam stands at 21 feet high and spans 550 feet in length, providing a storage capacity of 88 acre-feet. The dam is situated on the TR-East Yellow River and is regulated by the state of Missouri, with a low hazard potential and a moderate risk assessment rating.

Constructed with a stone core and soil foundation, East Yellow Creek B-33's spillway is uncontrolled with a width of 20 feet. While the dam is not currently rated for its condition and has not been inspected since 2001, it is designed to handle a maximum discharge of 101 cubic feet per second. Despite its lack of recent assessments, the dam's strategic location and design make it a crucial component in managing flood risks in the area, showcasing the importance of continued monitoring and maintenance for water resource and climate enthusiasts.

Year Completed

2001

Dam Length

550

Dam Height

21

River Or Stream

TR-EAST YELLOW

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

18

Drainage Area

38.4

Nid Storage

88

Structural Height

21

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

21
       
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Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.