Red River
That is the Red River.
The River that forms a border between Oklahoma and Texas is the Red River. The river was named for the red-bed country of its watershed.
Red river is part of Oklahoma's southern border.
The Zambezi River is on the southern border of Zambia.
The Ohio River
The Ohio River formed the southern border of the Northwest Territory.
The Red River forms most of Oklahoma's southern border with Texas east of the panhandle. It is also known as the Red River of the South.
The southern border of Indiana is the OHIO River (which separates it from Kentucky.)
The Red River.
Ohio River
The Ohio River.
The Red River.