Dd No E-4 Reservoir Report

Last Updated: December 6, 2025

Dd No E-4 is a local government-owned dam in Fort Scott, Kansas, designed by AG Engineering Assoc.


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Summary

It was completed in 1987 with the primary purpose of flood risk reduction along the Opossum Hollow River. The earth dam stands at 34 feet tall and stretches 800 feet in length, with a storage capacity of 463.5 acre-feet and a surface area of 7.4 acres.

Located in Bourbon County, Kansas, Dd No E-4 is regulated by the Kansas Department of Agriculture and meets state permitting, inspection, and enforcement requirements. The dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. While it has not been assigned a DSAC date, the risk assessment for Dd No E-4 is moderate (3), indicating the need for ongoing risk management measures to ensure its effectiveness in flood control.

Despite its low hazard potential, Dd No E-4 serves an important role in mitigating flood risks along the Opossum Hollow River. With its moderate risk assessment, continued monitoring and maintenance are essential to ensure the dam's ability to protect the surrounding area from potential flooding events.

Year Completed

1987

Dam Length

800

Dam Height

34

River Or Stream

OPOSSOM HOLLOW

Primary Dam Type

Earth

Surface Area

7.4

Drainage Area

1.62

Nid Storage

463.5

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

34
       
Seasonal Comparison

Weather Forecast

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.