Frd No 4 Reservoir Report

Last Updated: December 6, 2025

Frd No 4, also known as Frog Creek Watershed Dam 4, is a crucial structure owned by the local government in Coffey County, Kansas.


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Summary

Built in 1965 by the USDA NRCS, this earth dam stands at a height of 32 feet with a hydraulic height of 29 feet, serving primarily for flood risk reduction along the Frog Creek-TR. With a storage capacity of 1560 acre-feet, this dam plays a vital role in safeguarding the surrounding area from potential flooding events.

Located in Melvern, Kansas, Frd No 4 is regulated and inspected by the Kansas Department of Agriculture, ensuring the safety and effectiveness of the dam. With a low hazard potential and a moderate risk assessment rating, this dam remains a reliable structure for flood risk management in the region. While the condition assessment is currently not rated, the dam continues to fulfill its primary purpose of flood risk reduction, providing peace of mind to the local community.

Despite its age, Frd No 4 maintains its structural integrity and functionality, with no reported modifications since its construction. With an uncontrolled spillway type and a spillway width of 40 feet, this dam is well-equipped to handle excess water flow during heavy rainfall events. Overall, Frd No 4 stands as a testament to effective water resource management and climate resilience efforts in Coffey County, Kansas.

Year Completed

1965

Dam Length

1100

Dam Height

32

River Or Stream

FROG CREEK-TR

Primary Dam Type

Earth

Surface Area

50.88

Hydraulic Height

29

Nid Storage

1560

Structural Height

32

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

32
       
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.