The Mille River is a river of Ethiopia

Ethiopia

Ethiopia , officially known as the Federal Democratic Republic of Ethiopia, is a country located in the Horn of Africa. It is the second-most populous nation in Africa, with over 82 million inhabitants, and the tenth-largest by area, occupying 1,100,000 km2...

 and a tributary of the Awash

Awash River

The Awash is a major river of Ethiopia. Its course is entirely contained within the boundaries of Ethiopia, and empties into a chain of interconnected lakes that begin with Lake Gargori and end with Lake Abbe on the border with Djibouti, some 100 kilometers from the head of the Gulf of Tadjoura...

. It drains parts of the Semien (North) Wollo

Semien Wollo Zone

Semien Wollo is a Zone in the Ethiopian Amhara Region. Semien Wollo acquired its name from the former province of Wollo. Semien Wollo is bordered on the south by Debub Wollo, on the west by Debub Gondar, on the north by Wag Hemra, and on the northeast and east by the Afar Region; part of its...

 and Debub (South) Wollo Zones

Debub Wollo Zone

Debub Wollo is one of 10 Zones in the Ethiopian Amhara Region. It acquired its name from the former province of Wollo.Debub Wollo is bordered on the south by Semien Shewa and the Oromia Region, on the west by Mirab Gojjam, on the northwest by Debub Gondar, on the north by Semien Wollo and on the...

 of the Amhara Region

Amhara Region

Amhara is one of the nine ethnic divisions of Ethiopia, containing the homeland of the Amhara people. Previously known as Region 3, its capital is Bahir Dar....

, as well as Administrative Zone 4

Administrative Zone 4 (Afar)

Administrative Zone 4 is one of five Zones of the Afar Region of Ethiopia. This zone is bordered on the south and east by Administrative Zone 1, on the west by the Amhara Region, and on the north by Administrative Zone 2...

 of the Afar Region

Afar Region

Afar is one of the nine ethnic divisions of Ethiopia, and is the homeland of the Afar people. Formerly known as Region 2, its current capital is Asayita; a new capital named Semera on the paved Awash - Asseb highway is under construction....

.The explorer L.M. Nesbitt, who travelled through the area in 1928, was impressed by its size, and described the Mille as "probably the only real river which joins the Awash".

The river rises in the Ethiopian highlands

Ethiopian Highlands

The Ethiopian Highlands are a rugged mass of mountains in Ethiopia, Eritrea , and northern Somalia in the Horn of Africa...

 west of Sulula in Tehuledere

Tehuledere

Tehuledere is one of the 105 woredas in the Amhara Region of Ethiopia. This woreda is named for one of the "Houses" or subgroups of the Wollo Oromo, who was located there...

 woreda

Woreda

Woreda is an administrative division of Ethiopia , equivalent to a district . Woredas are composed of a number of Kebele, or neighborhood associations, which are the smallest unit of local government in Ethiopia...

, flowing first to the north, then curving to run east to its confluence with the Awash at 11°25′N 40°58′E.