The Ninnescah River is a 56.4 miles (90.8 km) river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 of southern Kansas

Kansas

Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...

. It has two branches. The main stream flows southeast and empties its waters into the Arkansas River

Arkansas River

The Arkansas River is a major tributary of the Mississippi River. The Arkansas generally flows to the east and southeast as it traverses the U.S. states of Colorado, Kansas, Oklahoma, and Arkansas. The river's initial basin starts in the Western United States in Colorado, specifically the Arkansas...

 near the town of Oxford

Oxford, Kansas

Oxford is a city in Sumner County, Kansas, United States. As of the 2010 census, the city population was 1,049.-Geography:Oxford is located at . According to the United States Census Bureau, the city has a total area of , all of it land.-Demographics:As of the census of 2000, there were 1,173...

 (Sumner County

Sumner County, Kansas

Sumner County is a county located in the U.S. state of Kansas. The county's population was 24,132 for the 2010 census. Its county seat is Wellington. Sumner County is part of the Wichita, Kansas Metropolitan Statistical Area. It was named in honor of Charles Sumner, a U.S...

). In the southern part of Stafford County

Stafford County, Kansas

Stafford County is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 4,437. Its county seat is St. John...

, this north fork flows northeastwardly to Plevna

Plevna, Kansas

Plevna is a city in Reno County, Kansas, United States. It is named after the historical city of Pleven in Bulgaria. As of the 2010 census, the city population was 98.-Geography:Plevna is located at...

, (Reno County

Reno County, Kansas

Reno County is a county located in the U.S. state of Kansas. The county's population was 64,511 for the 2010 census. The largest city and county seat is Hutchinson. The Hutchinson Micropolitan Statistical Area includes all of Reno County.-19th century:In 1887, the Chicago, Kansas and Nebraska...

) where the course changes to southeast. The south fork's source is in the western part of Pratt County

Pratt County, Kansas

Pratt County is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 9,656. The largest city and county seat is Pratt.-19th century:...

. Its course is almost due east through Pratt County and Kingman County

Kingman County, Kansas

Kingman County is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 7,858. The largest city and county seat is Kingman.-History:...

 until it unites with the north fork in the southwest corner of Sedgwick County

Sedgwick County, Kansas

Sedgwick County is a county located in the U.S. state of Kansas. The county's population was 498,365 for the 2010 census. The largest city and county seat is Wichita. The county was named after General John Sedgwick...

.