Senegal River, border of Senegal and Mauritania
Creating a visible green contrast with the surrounding desert sands, the Senegal River flows through western Africa and into the Atlantic Ocean.
It is 1790 km long river and forms the border between Senegal and Mauritania.
The Senegal is separated from the Atlantic Ocean by a thin strip of sand called the Langue de Barbarie before it pours into the ocean itself.
Near its mouth is the island city of Saint Louis.
The Senegal River has a drainage basin of 483,181 km² and an estimated annual discharge of 8 million km³.
In our image, some sections of the river, particularly those farther inland, appear light tan due to sediments. Other sections, however, especially those nearest the coast, appear green, perhaps due to the build-up of algae.