Santa Fe Lake Dam (Edgerton Lake Dam) Reservoir Report

Last Updated: December 6, 2025

Santa Fe Lake Dam, also known as Edgerton Lake Dam, is a vital structure located in Johnson County, Kansas, serving the primary purpose of flood risk reduction.


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Summary

Completed in 2004, this earth dam stands at a height of 24 feet and stretches 575 feet in length. With a maximum storage capacity of 235 acre-feet, it has a normal storage capacity of 78 acre-feet and covers a surface area of 11.7 acres.

Managed by the local government, Santa Fe Lake Dam is regulated by the Kansas Department of Agriculture and undergoes regular inspections to ensure its structural integrity. Despite being classified as having a low hazard potential, the dam's condition assessment is deemed fair. Situated on Martin's Branch - TR, this dam not only aids in flood control but also serves recreational and wildlife conservation purposes in the region. With a moderate risk assessment rating, measures are in place to manage potential risks associated with the dam.

Overall, Santa Fe Lake Dam plays a crucial role in mitigating flood risks in the area, contributing to the overall water resource management efforts in Johnson County, Kansas. As a key infrastructure project completed in the early 2000s, this dam continues to be a focal point for water resource and climate enthusiasts, showcasing the importance of effective dam management in addressing environmental and safety concerns in the region.

Year Completed

2004

Dam Length

575

Dam Height

24

River Or Stream

MARTIN'S BRANCH - TR

Primary Dam Type

Earth

Surface Area

11.7

Drainage Area

4.98

Nid Storage

235

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

24
       
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.