Tomahawk Hills Cc Dam Reservoir Report

Last Updated: December 6, 2025

Located in Holliday, Kansas, the Tomahawk Hills CC Dam stands as a testament to engineering prowess and water resource management.


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Summary

Built in 1955 by designer Orville W Love, this earth dam serves primarily for irrigation purposes, with a Normal Storage capacity of 71.5 acre-feet and a total NID Storage of 97.6 acre-feet. With a Hazard Potential classified as High and a Condition Assessment rated as Fair, this dam plays a crucial role in the local water infrastructure.

Situated along the Little Mill Creek-TR, this dam boasts a Structural Height of 52 feet and a Hydraulic Height of 40 feet, stretching 460 feet in length. Despite its age, the Tomahawk Hills CC Dam continues to undergo regular inspections by the Kansas Department of Agriculture, ensuring its safety and reliability. With a Spillway Width of 30 feet and a Max Discharge of 208 cubic feet per second, this dam exemplifies the intersection of human ingenuity and environmental stewardship in managing water resources.

As climate change continues to impact our planet, structures like the Tomahawk Hills CC Dam play a vital role in water conservation and management. With its historical significance and ongoing relevance in irrigation and recreation, this dam stands as a symbol of resilience and adaptability in the face of evolving environmental challenges. As enthusiasts of water resources and climate action, the Tomahawk Hills CC Dam serves as a reminder of the crucial importance of sustainable infrastructure in safeguarding our natural resources for future generations.

Year Completed

1955

Dam Length

460

Dam Height

52

River Or Stream

LITTLE MILL CREEK-TR

Primary Dam Type

Earth

Surface Area

6.2

Hydraulic Height

40

Drainage Area

0.13

Nid Storage

97.6

Structural Height

52

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

52
       
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.