East Rodrock Lake Reservoir Report

Last Updated: December 6, 2025

East Rodrock Lake is a privately owned reservoir located in Overland Park, Kansas, with a primary purpose of recreation.


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Summary

Built in 2010 by Payne & Brockway, P.A., this Earth-type dam stands at 23 feet high and boasts a storage capacity of 299 acre-feet. The lake covers a surface area of 19 acres and has a drainage area of 0.34 square miles, with a maximum discharge of 4750 cubic feet per second.

Despite its high hazard potential, East Rodrock Lake has a satisfactory condition assessment and a moderate risk assessment score of 3 out of 5. The dam is inspected every 3 years, with the last inspection conducted in December 2009. The spillway, with a width of 115 feet, is uncontrolled, and there are no outlet gates or associated structures. The reservoir is managed by the state regulatory agency, the Kansas Department of Agriculture, ensuring compliance with state permitting, inspection, and enforcement requirements.

East Rodrock Lake offers a serene recreational escape in Johnson County, Kansas, attracting water resource and climate enthusiasts alike. Its strategic location, just 3 miles from Overland Park, makes it a popular spot for fishing, boating, and wildlife observation. With its modern design and sustainable management practices, this reservoir serves as a valuable water resource for the local community while enhancing the natural beauty of the surrounding area.

Year Completed

2010

Dam Length

1170

Dam Height

23

Primary Dam Type

Earth

Surface Area

19

Hydraulic Height

19.2

Drainage Area

0.34

Nid Storage

299

Structural Height

27.5

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

28
       
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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.