Much of the border between Oklahoma and Texas is the Red River.
The Red River forms Oklahoma's southern border with Texas.
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.
Bordering Texas and Louisiana is the Sabine River, the Red River borders Texas and Oklahoma, and between Texas and New Mexico/Mexico is the Rio.
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.
the red river is the intended answer but technically only the vegetation line on its right bank forms the border the river itself is entirely within Oklahoma everywhere between the Texas panhandle & Arkansas
The Red River provides a boundary between the US States of Oklahoma and Texas. The river is so famous that a college football game is named after it. The University of Oklahoma and the University of Texas play an annual football game called the Red River Game.
Texas is separated from Oklahoma by the Red River, a major river that flows eastward along the border. Texas is separated from Louisiana by the Sabine River, which forms the eastern border of Texas. Both rivers serve as natural boundaries between the states.
The Red River forms the boundary between Texas and Oklahoma. It flows from northwest Texas, near the Texas Panhandle, through north Texas before eventually emptying into the Mississippi River in Louisiana.
It flows East Southeast with an occasional meander.
The Red River (Mississippi River) forms a border between Texas and Oklahoma. It is a short border between Texas and Arkansas before entering Arkansas, turning south near Fulton, Arkansas and flowing into Louisiana. The total length of the river is 1,360 miles (2,190 km).