Melvern Waterfowl Marsh Dam #2 Reservoir Report

Last Updated: December 5, 2025

Melvern Waterfowl Marsh Dam #2, located in Osage County, Kansas, is a state-owned earth dam primarily used for recreation.


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Summary

With a height of 7 feet and a length of 565 feet, this dam provides a storage capacity of 94 acre-feet and covers a surface area of 29.7 acres. Situated along the Marais Des Cygnes River, this dam serves as a vital resource for waterfowl and wildlife in the area.

Although the dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment, it has not been inspected recently. Despite this, the dam has not experienced any major modifications or incidents in recent years. The dam does not have designated outlet gates and does not fall under the jurisdiction of the U.S. Army Corps of Engineers. Its purpose is primarily for recreation, attracting outdoor enthusiasts and nature lovers to its tranquil surroundings.

While Melvern Waterfowl Marsh Dam #2 may not be a high-risk structure, its significance lies in its contribution to the local ecosystem and recreational opportunities it offers. As a state-owned dam, it serves as a reminder of the delicate balance between water resource management and environmental conservation, making it a valuable asset for water resource and climate enthusiasts to explore and appreciate.

Dam Length

565

Dam Height

7

River Or Stream

MARAIS DES CYGNES RIVER-TR

Primary Dam Type

Earth

Surface Area

29.7

Nid Storage

94

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

7
       
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.