Mallon Lake, located in Lyon County, Kansas, is a privately owned earth dam structure with a primary purpose of recreation. Completed in 2001, the dam stands at a height of 23 feet and has a storage capacity of 237.55 acre-feet, with a normal storage level of 88.57 acre-feet. The surface area of the lake spans 16.14 acres, with a drainage area of 0.34 square miles.

Situated on the Neosho River, Mallon Lake offers a serene setting for water resource and climate enthusiasts to explore. The low hazard potential of the dam, combined with its not rated condition assessment, provides a safe environment for recreational activities such as fishing, boating, and wildlife observation. The dam's proximity to Emporia, Kansas, makes it a convenient destination for outdoor enthusiasts looking to connect with nature.

With its tranquil waters and picturesque surroundings, Mallon Lake is a hidden gem in the heart of Lyon County. Managed by the Kansas Department of Agriculture, this recreational oasis offers a peaceful retreat for visitors seeking to immerse themselves in the beauty of Kansas' natural landscapes. Whether you're a water resource enthusiast or a climate advocate, Mallon Lake provides the perfect setting to appreciate the interconnectedness of water, climate, and the environment.