page_title: Marmaton River
hierarchical_section_title: Marmaton River
caption_attribution_description: Map of the Osage River watershed — in Kansas and Missouri.
context_page_description: The Marmaton River is a 102-mile-long tributary of the Little Osage River in southeastern Kansas and western Missouri in the United States. Via the Little Osage, Osage and Missouri rivers, it is part of the watershed of the Mississippi River.
context_section_description: The Marmaton River (MAR-muh-tuhn) is a 102-mile-long (164 km) tributary of the Little Osage River in southeastern Kansas and western Missouri in the United States.  Via the Little Osage, Osage and Missouri rivers, it is part of the watershed of the Mississippi River.
caption: Map of the Osage River watershed including the Marmaton River
exif: {}