Dd No 25 Reservoir Report

Last Updated: December 5, 2025

Dd No 25, located in Pottawatomie, Kansas, is a crucial structure designed for flood risk reduction along the Wilson Creek-TR river.


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Summary

Built in 1996, this earth dam stands at a height of 30 feet, with a length of 450 feet and a storage capacity of 157.6 acre-feet. Despite being categorized as low hazard potential, the dam is regulated and inspected by the Kansas Department of Agriculture to ensure its functionality in mitigating potential risks.

Owned and managed by the local government, Dd No 25 plays a significant role in debris control and flood risk reduction in the region. With a surface area of 4.9 acres and a drainage area of 0.6 square miles, this dam serves as a critical infrastructure to protect the surrounding areas from potential inundation. The spillway, with a width of 50 feet, is currently uncontrolled, allowing for the release of excess water during periods of high discharge.

Although the condition assessment of Dd No 25 is listed as "Not Rated," the dam continues to meet regulatory standards and serves its primary purpose effectively. With a moderate risk assessment rating of 3, the structure is well-maintained and equipped to handle potential emergencies. As a vital component of the local water resource management system, Dd No 25 stands as a testament to the proactive measures taken to safeguard against natural disasters and ensure the sustainability of water resources in the area.

Year Completed

1996

Dam Length

450

Dam Height

30

River Or Stream

WILSON CREEK-TR

Primary Dam Type

Earth

Surface Area

4.9

Drainage Area

0.6

Nid Storage

157.6

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

30
       
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.