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