The Marais des Cygnes River is a tributary of the Osage River located in eastern Kansas and western Missouri. It flows approximately 100 miles and is known for its scenic beauty and diverse wildlife. The river's name, which translates to "Swans Marsh," reflects the area's natural habitat. The river supports various recreational activities, including fishing, kayaking, and birdwatching. It is surrounded by lush vegetation and provides a habitat for numerous species, making it an important ecological resource. The Marais des Cygnes National Wildlife Refuge nearby further protects the region's wildlife and natural landscapes.