Marmaton River

Marmaton River
Marmaton River at Kansas Highway 3 south of Uniontown, Kansas
Map of the Osage River watershed including the Marmaton River
Location
CountryUnited States
StateKansas, Missouri
Physical characteristics
Source 
 • locationAllen County, Kansas
 • coordinates37°56′45″N 95°07′51″W / 37.94583°N 95.13083°W / 37.94583; -95.13083
 • elevation1,105 ft (337 m)
MouthLittle Osage River
 • location
Vernon County, Missouri
 • coordinates
37°59′57″N 94°19′08″W / 37.99917°N 94.31889°W / 37.99917; -94.31889
 • elevation
732 ft (223 m)
Length102 mi (164 km)
Discharge 
 • locationUSGS 06918060 near Nevada, MO
 • average1,051 cu ft/s (29.8 m3/s)
 • minimum0.03 cu ft/s (0.00085 m3/s)
 • maximum33,800 cu ft/s (960 m3/s)
Basin features
WatershedsMarmaton-Little Osage-Osage-Missouri-Mississippi

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.