The Marmaton River is a tributary of the Neosho River located in southeastern Kansas, USA. It flows through several counties, including Bourbon and Linn, and is approximately 70 miles long. The river is known for its scenic beauty and provides habitats for various wildlife species. The Marmaton River is popular for recreational activities such as fishing, kayaking, and hiking along its banks. Its watershed supports local agriculture and contributes to the region's ecosystem. The river's health is monitored to ensure the sustainability of its natural resources and the surrounding environment.