Dd No G-4 Reservoir Report

Last Updated: December 6, 2025

Dd No G-4, located in Fort Scott, Kansas, is a local government-owned dam designed for flood risk reduction on Walnut Creek.


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Summary

Built in 1998, this earth dam stands at a height of 28 feet and has a storage capacity of 2233.7 acre-feet. With a hazard potential rated as high and a condition assessment of fair, this structure is regulated by the Kansas Department of Agriculture and undergoes regular inspections to ensure its safety and functionality.

The primary purpose of Dd No G-4 is debris control and flood risk reduction, serving the community by mitigating potential flooding events. The dam has a spillway width of 200 feet and a maximum discharge capacity of 2110.34 cubic feet per second. While the risk assessment is moderate, measures are in place to manage any potential risks associated with the dam, ensuring the safety of the surrounding area.

With its critical role in protecting the region from flooding, Dd No G-4 plays a vital part in the overall water resource management strategy for Bourbon County, Kansas. As climate change continues to impact weather patterns, structures like Dd No G-4 are essential for safeguarding communities and ensuring the sustainable management of water resources in the face of evolving environmental challenges.

Year Completed

1998

Dam Height

28

River Or Stream

WALNUT CREEK

Primary Dam Type

Earth

Surface Area

13

Drainage Area

4.6

Nid Storage

2233.7

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

28
       
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.