Leavenworth State Lake Dam Reservoir Report

Last Updated: December 6, 2025

Leavenworth State Lake Dam, situated in Linwood, Kansas, stands as a crucial structure for managing water resources in the area.


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Summary

Built in 1994, this earth dam serves a primary purpose of creating a Fish and Wildlife Pond, offering essential habitat for local flora and fauna. With a height of 63 feet and a length of 1240 feet, the dam provides a storage capacity of 5050 acre-feet, contributing to the conservation of water in the region.

Managed by the Kansas Department of Agriculture, Leavenworth State Lake Dam is subject to regular inspections and enforcement measures to ensure its structural integrity and compliance with state regulations. The dam boasts a fair condition assessment and a high hazard potential, emphasizing the importance of its maintenance and monitoring. Additionally, with a maximum discharge capacity of 6345 cubic feet per second, the dam plays a crucial role in flood control and water management along the Ninemile Creek-TR watershed.

For water resource and climate enthusiasts, Leavenworth State Lake Dam offers a fascinating glimpse into the intersection of infrastructure, environment, and conservation efforts. Its strategic location, design by George Butler Associates, and state-regulated status underscore its significance in safeguarding the natural resources of Leavenworth County, Kansas. As a vital component of the local ecosystem, this dam stands as a testament to the ongoing commitment to sustainable water management practices in the region.

Year Completed

1994

Dam Length

1240

Dam Height

63

River Or Stream

NINEMILE CREEK-TR

Primary Dam Type

Earth

Surface Area

175

Hydraulic Height

60

Drainage Area

3.81

Nid Storage

5050

Structural Height

77

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

77
       
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.