East Yellow Creek A- 50 Reservoir Report
Last Updated: December 12, 2025
East Yellow Creek A-50 is a flood risk reduction structure located in Sullivan, Missouri, designed by the USDA NRCS and completed in 2003.
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Summary
This earth dam stands at a height of 27 feet and has a structural height of 31 feet, with a maximum storage capacity of 102.7 acre-feet and a normal storage of 29.2 acre-feet. The dam spans 580 feet in length, covering a surface area of 8 acres and serving a drainage area of 230.4 acres.
With a low hazard potential and a moderate risk assessment rating of 3, East Yellow Creek A-50 plays a vital role in managing flood risks in the region. The dam's primary purpose is flood risk reduction, but it also serves other purposes such as fire protection and providing habitat for fish and wildlife. Despite not being state-regulated or inspected, the structure meets the necessary guidelines and is maintained to ensure its functionality in case of emergencies.
Located in the Rock Island District and under the ownership of the local government, East Yellow Creek A-50 is a significant asset in protecting the surrounding area from potential flooding events. Its strategic design and construction by the Natural Resources Conservation Service highlight the importance of sustainable water resource management and climate resilience in safeguarding communities against natural disasters.
Year Completed |
2003 |
Dam Length |
580 |
Dam Height |
27 |
River Or Stream |
TR-EAST YELLOW CREEK |
Primary Dam Type |
Earth |
Surface Area |
8 |
Hydraulic Height |
24 |
Drainage Area |
230.4 |
Nid Storage |
102.7 |
Structural Height |
31 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
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 A- 50