Harmon Dam Reservoir Report

Last Updated: December 6, 2025

Harmon Dam, located in Holliday, Kansas, is a privately owned structure designed by John Browning and completed in 1964.


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Summary

This earth dam stands at a height of 22 feet and stretches 590 feet in length, with a primary purpose of fire protection, stock, or small fish pond. With a maximum storage capacity of 117 acre-feet and a normal storage of 68.7 acre-feet, Harmon Dam serves as a crucial water resource for the area.

Situated along the Kansas River-TR, this low hazard potential dam has not been rated for its condition assessment. Despite its low risk profile, Harmon Dam has not undergone inspection or maintenance in recent years, with the last inspection dating back to February 1989. The dam does not have an Emergency Action Plan (EAP) in place, raising concerns about its preparedness for potential emergencies or disasters. However, with its important role in fire protection and water storage, efforts to ensure the safety and maintenance of Harmon Dam are crucial for the surrounding community and the environment.

For water resource and climate enthusiasts, Harmon Dam offers a glimpse into the intersection of human infrastructure and natural ecosystems. As a key feature along the Kansas River, this dam plays a vital role in water storage and management for the region. However, the lack of recent inspections and emergency preparedness raises questions about the sustainability and safety of this structure in the face of changing climate patterns and potential extreme weather events. Stay tuned for updates on the condition and management of Harmon Dam as efforts are made to enhance its resilience and effectiveness in the face of environmental challenges.

Year Completed

1964

Dam Length

590

Dam Height

22

River Or Stream

KANSAS RIVER-TR

Primary Dam Type

Earth

Surface Area

8.1

Hydraulic Height

22

Drainage Area

1.48

Nid Storage

117

Structural Height

23

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

23
       
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.