Frd No 11 Reservoir Report

Last Updated: December 5, 2025

Frd No 11, also known as Upper Walnut WS Joint District No 33, is a crucial water resource infrastructure located in El Dorado, Kansas.


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Summary

Owned by the local government and regulated by the Kansas Department of Agriculture, this dam serves the primary purpose of flood risk reduction along the West Branch Walnut River. Built in 1976 by the USDA NRCS, this earth dam stands at a height of 30 feet and has a storage capacity of over 1000 acre-feet.

With a low hazard potential and a moderate risk assessment rating, Frd No 11 plays a key role in managing water flow and reducing flood risks in the area. The dam has not been inspected recently, but it remains in a condition that is not rated. Despite its age, this structure continues to provide essential flood protection and water management services to the community. As a part of the larger water infrastructure network in Butler County, Kansas, Frd No 11 contributes to the overall resilience of the region against flooding events and water resource challenges.

Year Completed

1976

Dam Length

3710

Dam Height

30

River Or Stream

WEST BRANCH WALNUT RIVER-TR

Primary Dam Type

Earth

Surface Area

18.62

Hydraulic Height

26

Drainage Area

1.94

Nid Storage

1006.19

Structural Height

30

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

30
       
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.