North Frisco Dam Reservoir Report

Last Updated: December 6, 2025

Located in Johnson County, Kansas, the North Frisco Dam, also known as Frisco Dam, stands as a crucial local government-owned structure regulating the flow of Mill Creek-TR.


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Summary

Completed in 1868, this Earth-type dam boasts a height of 21 feet and a length of 930 feet, with a storage capacity of 350 acre-feet. Despite its age, the dam maintains a fair condition assessment, with a high hazard potential due to its location and the surrounding area's susceptibility to flooding.

Managed by the Kansas Department of Agriculture, the North Frisco Dam plays a vital role in water resource management, with a normal storage capacity of 35.4 acre-feet and a maximum discharge of 860 cubic feet per second. The dam's strategic location in Olathe, Kansas, ensures the protection of nearby communities from potential flooding events, highlighting its importance in safeguarding both the environment and public safety. With state regulation, inspection, and enforcement in place, the dam remains a crucial infrastructure for ensuring water resource sustainability in the region.

In the event of emergencies, the North Frisco Dam has a high hazard potential but is equipped with emergency action plans to mitigate risks and protect downstream areas. With a designated inspection frequency and a comprehensive risk management approach, the dam stands as a testament to effective water resource infrastructure planning and management. The North Frisco Dam serves as a key component in the region's water resource and climate resilience efforts, safeguarding communities and ecosystems from potential hazards while ensuring sustainable water management practices for the future.

Year Completed

1868

Dam Length

930

Dam Height

21

River Or Stream

MILL CREEK-TR

Primary Dam Type

Earth

Surface Area

11.3

Hydraulic Height

12

Drainage Area

0.27

Nid Storage

350

Structural Height

21

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

21
       
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.