Course
The Neosho's headwaters are in Morris County, Kansas, and it flows southeast through Kansas. In Ottawa County, Oklahoma, the river turns south-southwest for the remainder of its course through Oklahoma. It meets the Arkansas River near the city of Muskogee, about a mile downstream of the confluence of the Arkansas River and the Verdigris River.
In Oklahoma the Neosho ends at its confluence with Spring River at Twin Bridges State Park. From that point on it is called the Grand River. The Grand River flows south to the Grand Lake.
Read more about this topic: Neosho River