The Usno River is a

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...

of the

Omo River The Omo River (also called Omo-Bottego) in southern Ethiopia is the largest Ethiopian river outside the Nile, Nile Basin. Its course is entirely contained within the boundaries of Ethiopia, and it empties into Lake Turkana on the border with Keny ...

Ethiopia Ethiopia, , om, Itiyoophiyaa, so, Itoobiya, ti, ኢትዮጵያ, Ítiyop'iya, aa, Itiyoppiya officially the Federal Democratic Republic of Ethiopia, is a landlocked country in the Horn of Africa. It shares borders with Eritrea to the ...

. Formed by the confluence of the

Magi Magi (; singular magus ; from Latin ''magus'', cf. fa, مغ ) were priests in Zoroastrianism and the earlier religions of the western Iranians. The earliest known use of the word ''magi'' is in the trilingual inscription written by Darius th ...

and the Neri rivers, it flows south past the Nyalibong Hills before entering the Omo at . Almost all of the Usno's course is inside the boundaries of the

Mago National Park Mago may refer to: Places *Mago Island, an island in Fiji * Mago, Minorca, a Carthaginian and later Roman town in Menorca * Mago, Russia, a rural locality (a settlement) in Khabarovsk Krai, Russia * Mago National Park, in Ethiopia ** Mount Mago a ...

See also