Lacygne Lake Dam Reservoir Report

Last Updated: December 6, 2025

Lacygne Lake Dam, located in BOICOURT, Kansas, along the NORTH SUGAR CREEK, is a privately owned structure designed by BLACK AND VEATCH.


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Summary

Completed in 1971, this earth dam stands at a height of 61 feet, with a structural height of 76 feet and a length of 6970 feet. The dam has a primary purpose other than flood control, serving mainly for recreational activities, with a storage capacity of 85,000 acre-feet and a normal storage capacity of 40,000 acre-feet.

The dam, regulated by the Kansas Department of Agriculture, has a high hazard potential but is currently deemed to be in satisfactory condition. Despite its age, the dam has undergone regular inspections, with the last inspection conducted in October 2019. It is reassuring to note that emergency action plans are in place, ensuring preparedness in case of any unforeseen events. With its location offering a surface area of 2600 acres for water enthusiasts and a drainage area of 57.5 square miles, Lacygne Lake Dam remains a vital water resource for the surrounding community.

As a significant structure in the Tulsa District, Lacygne Lake Dam plays a crucial role in water management and recreation in Linn County, Kansas. With its unique design and purpose, the dam stands as a testament to effective engineering and serves as a reminder of the importance of sustainable water resource management in the face of changing climates. For water resource and climate enthusiasts, Lacygne Lake Dam is not just a dam but a symbol of resilience and adaptability in the realm of water infrastructure.

Year Completed

1971

Dam Length

6970

Dam Height

61

River Or Stream

NORTH SUGAR CREEK

Primary Dam Type

Earth

Surface Area

2600

Hydraulic Height

61

Drainage Area

57.5

Nid Storage

85000

Structural Height

76

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

76
       
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.