Frd No 68 Reservoir Report

Last Updated: December 16, 2025

Frd No 68, also known as Irish Creek Watershed Site 68, is a vital flood risk reduction structure located in Lillis, Kansas.


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Summary

Owned by the local government and designed by USDA NRCS, this earth dam stands at a height of 38.4 feet and has a hydraulic height of 43 feet. Completed in 1976, the dam has a storage capacity of 2135 acre-feet, serving the primary purpose of flood risk reduction within the Irish Creek-TR watershed.

With a drainage area of 3.21 square miles, Frd No 68 plays a crucial role in managing water flow and protecting the surrounding areas from potential flooding events. The dam has a high hazard potential and is in fair condition according to the latest inspection in April 2019. Despite its age, the dam continues to function effectively, with a moderate risk assessment rating of 3. As climate change impacts water resources, structures like Frd No 68 are essential for mitigating flood risks and ensuring the safety of communities downstream.

Managed by the Kansas Department of Agriculture, Frd No 68 exemplifies the collaboration between local and state agencies in regulating, inspecting, and enforcing dam safety measures. With its uncontrolled spillway and a surface area of 33.92 acres, the dam provides critical protection to the residents of Marshall County, Kansas. As water resource and climate enthusiasts, understanding the importance of infrastructure like Frd No 68 is key to safeguarding our communities in an ever-changing environment.

Year Completed

1976

Dam Length

2725

Dam Height

38.4

River Or Stream

IRISH CREEK-TR

Primary Dam Type

Earth

Surface Area

33.92

Hydraulic Height

43

Drainage Area

3.21

Nid Storage

2135

Structural Height

44

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

44
       
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.