E.Br So Fk Blackwater E-27 Reservoir Report

Last Updated: December 7, 2025

E.Br So Fk Blackwater E-27, located in Sweet Springs, Missouri, is a key structure managed by the local government for flood risk reduction along the TR-E.BR.SO.FK.BLACKWATER river system.


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Summary

Built in 1958, this earth dam stands at 24 feet high, with a storage capacity of 170 acre-feet and a drainage area of 147.2 square miles. Despite its low hazard potential, the dam has a moderate risk rating of 3 due to its uncontrolled spillway type and limited emergency preparedness measures.

The dam, primarily constructed with stone core and soil foundation, spans 335 feet in length and covers a surface area of 4 acres. With a maximum discharge capacity of 564 cubic feet per second, the structure serves as a critical infrastructure for flood control in the region. While it lacks recent inspection data and a condition assessment rating, E.Br So Fk Blackwater E-27 remains an integral component of the flood risk management strategy in Johnson County, Missouri, under the jurisdiction of the Kansas City District.

For water resource and climate enthusiasts, E.Br So Fk Blackwater E-27 offers a fascinating case study in dam engineering and flood control practices in the Midwest. With its historical significance and strategic location within the TR-E.BR.SO.FK.BLACKWATER watershed, this structure highlights the importance of proactive risk management and emergency preparedness in mitigating potential disasters. As discussions on climate change and water resource sustainability continue to evolve, understanding the role of structures like E-27 becomes paramount in ensuring the resilience of our communities against natural hazards and extreme weather events.

Year Completed

1958

Dam Length

335

Dam Height

22

River Or Stream

TR-E.BR.SO.FK.BLACKWATER

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

22

Drainage Area

147.2

Nid Storage

170

Structural Height

24

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

24
       
Seasonal Comparison

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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.