The Muger River is a north-flowing tributary of the Abay River in central 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...

, which is notable for its deep gorge. Its confluence with the Abay is at 9°54′N 37°56′E. Tributaries of the Muger include the Labbu. The Muger has a drainage area of about 8,188 square kilometers.

The Muger is important as a landmark because it marked the eastern boundary of the kingdom of Damot

Damot

Damot was a medieval kingdom in what is now Ethiopia, and tributary to the Ethiopian Empire. Originally located south of the Abay and west of the Muger River, under the pressure of Oromo attacks the rulers were forced to resettle north of the Abay in southern Gojjam between 1574 and 1606.Its...

 (before the Great Oromo migration forced that people across the Abay) and the western one of the district of Selale. Somewhere in the Guder

Guder River

The Guder is a river of central Ethiopia. It is a tributary of the Abay or Blue Nile on the left side; tributaries of the Guder include the Dabissa and the Taranta. The Guder has a drainage area is about 7,011 square kilometers in size....

-Muger valleys, the first recorded dinosaur fossil in the Horn of Africa

Horn of Africa

The Horn of Africa is a peninsula in East Africa that juts hundreds of kilometers into the Arabian Sea and lies along the southern side of the Gulf of Aden. It is the easternmost projection of the African continent...

 was discovered in 1976. It was a single tooth of a carnosaur.