WThe Agwei River or the River Agwei, also spelled Agvey, is a tributary of the Pibor River that flows through eastern South Sudan and western Ethiopia. Its own tributaries include the Abara and Kongkong rivers. The river is a wadi, or ravine, that may run dry during the dry season but quickly becomes a watercourse due to heavy rainfall during the wet season.
WThe Alwero Dam is a reservoir and irrigation system in the Abobo district of Gambela, Ethiopia. It was built with Soviet Union aid, during the Derg regime by former Ethiopian President, Colonel Mengistu Haile Mariam. It is located at a longitude of 34.4824508 and latitude of 7.8476356 with a coordination of 7.861834,34.496799 on Alwero’s river, Abobo, Gambella region. It is meant for irrigation, with a water capacity of 74.6 million cubic metres, and a dam height of 22 metres. This offers a conducive environment for water resources development for the population settled in the lowlands area to irrigate the farm in the local region. It drains into the Nile Basin.
WThe Angereb also known as the Bahr as-Salam is a river of Ethiopia and eastern Sudan, and one of the sources of the Nile. It rises near Daqwa, north of Gondar in the Amhara Region, flowing west to join the Atbarah River. The historic district of Armachiho is located along part of its course.
WThe Bashilo River is located in Ethiopia. Known for its canyon, which one source describes as almost as extensive as the canyon of its parent the Abay, also known as the Blue Nile, the river originates just west of Kutaber in the Amhara Region, flowing first to the northwest to where the Tergiya empties into it, then to the southwest to its confluence with the Abay. Its drainage area is about 13,242 square kilometers in size, covering portions of the Semien Gondar, Semien Wollo and Debub Wollo Zones. Its tributaries include the Checheho, and the Walano.
WThe Dabus River is a north-flowing tributary of the Abay River in southwestern Ethiopia; it joins its parent stream at 10°36′38″N 35°8′58″E. The Dabus has a drainage area of about 21,032 square kilometers.
WThe Dawa River is found in East Africa, covering an area of, 58,961km2. It flows through three major countries: Kenya, Ethiopia, and Somalia, with 81% falling into Ethiopian territory. It is known for its complex geological environment, evident through its diverse lithology and structural framework, coming from the river’s closeness to multiple volcanic-tectonic events. The wide river has gentle slopes either side of its exposed bedrock. The Dawa river flows south east to form part of the Ethiopia - Somalia border and part of Ethiopia - Kenya border. Awata, Digati, and Mormora are the only significant off-flowing rivers to Dawa.
WThe Dinder River is a tributary of the Blue Nile. It flows through Ethiopia and Sudan for 480 kilometres (300 mi).
WThe Erer is a perennial river of eastern Ethiopia. It rises near the city of Harar, and flows in a primarily southern direction to its confluence with the Shabelle at 7°33′43″N 42°01′43″E.
WThe Ganale Doria River is a perennial river in southeastern Ethiopia. Rising in the mountains east of Aleta Wendo, the Ganale flows south and east to join with the Dawa at the border with Somalia to become the Jubba. The river's tributaries include the Welmel, Weyib, Dumale, Doya, Hawas and the Hambala. The Del Verme Falls is a notable feature of its middle course.
WThe Gebba is a river of southwestern Ethiopia. It is a tributary of the Baro River, which is created when the Gebba joins the Birbir at latitude and longitude 8°14′28″N 34°57′39″E. The river is the planned site for the twin Gebba Hydro electric power dams.
WThe Gibe River is by far the largest tributary of the Omo River in Ethiopia and typically flowing south / southeast. The confluence of the large Gibe River at 8°19′N 37°28′E with the smaller Wabe River forms the even larger Omo River. Consequently, the whole drainage basin is sometimes called Omo-Gibe River Basin with the Gibe and the Omo draining the upper and lower reaches, respectively.
WGilgel Abay is a river of central Ethiopia. Rising in the mountains of Gojjam, it flows northward to empty into south-western Lake Tana at 11°48′N 37°7′E. Tributaries of the Gilgel Abbay include the Ashar, Jamma, Kelti and the Koger. It was regarded as the true source of the Nile for a long time and the Jesuit priest Pedro Paez visited it in 1618. The name Gilgel Abbay means Lesser Nile, as Abbay is the name for the Blue Nile.
WThe Gilo River is a river in the Gambela Region of southwestern Ethiopia. It is also known by a variety of names: the Gimira of Dizu call it the "Mene", while the Gemira of Chako call it "Owis", and Amhara and Oromo settlers in the early 20th century knew it by a third name, "Bako". From its source in the Ethiopian Highlands near Mizan Teferi it flows to the west, through Lake Tata to join the Pibor River on Ethiopia's border with Sudan. The combined waters then join the Sobat River and the White Nile.
WThe 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 River has a drainage area about 7,011 square kilometers in size.
WThe Jamma River is a river in central Ethiopia and a tributary of the Abay on its right side. It drains parts of the Semien Shewa Zones of the Amhara and Oromia Regions. The Upper Jamma flows through steep, deep canyons cut first through volcanic rock and then through the Cretaceous sandstone and shaly sandstone, with Jurassic limestone at the bottom. It has a drainage area of about 15,782 square kilometers in size. Tributaries include the Wanchet.
WThe Magech River is a river of Ethiopia. It rises just off the city of Gondar, and flows south into Lake Tana at the latitude and longitude of 12°16′10″N 37°23′50″E. Its tributaries include the Dmaza, the Lesser Angereb, and the Ahyamezoriya.
WThe Mille River is a river of Ethiopia and a tributary of the Awash. It drains parts of the Semien (North) Wollo and Debub (South) Wollo Zones of the Amhara Region, as well as Administrative Zone 4 of the Afar Region. 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 Ala River (A'ura) and Golima River (Golina) are small tributaries of the Mille.
WThe Muger River is a north-flowing tributary of the Abay River in central Ethiopia, which is notable for its deep gorge. Its confluence with the Abay is at: 9°55′07″N 37°55′50″E. Tributaries of the Muger include the Labbu. The Muger has a drainage area of about 8,188 square kilometers.
WThe Obel River is one of the main tributaries of the Mareb (Gash) river. The latter watercourse forms part of the border between Eritrea and Ethiopia, with its headwaters in the Eritrean Highlands.
WThe Rahad is a river whose sources are in Ethiopia, where it is called Shinfa, and a tributary of the Abay on the right side. The river has its origins in the Ethiopian Highlands, from where it flows 480 km (300 mi) into eastern Sudan. In Sudan, it merges into the Blue Nile.
WWari River is a river of northern Ethiopia and a tributary of the Tekezé River. It rises in the Gar'alta and flows to the southwest into the Tekezé at 13°41′N 38°33′E. Tributaries of the Wari include the Assam, Chemit, Meseuma, Tsedia, Agefet and Tsaliet rivers. The general drainage is westward, to the Tekezze River. Main tributaries in Dogu’a Tembien district are, from upstream to downstreamAgefet River Amblo River, in tabia Addi Walka Azef River, at the border of tabias Addi Walka and Haddinnet Ab'aro River, in tabia Haddinnet and woreda Kola Tembien May Leiba, in tabia Ayninbirkekin, which becomes Tinsehe R. in Selam and Mahbere Sillasie, and Tsaliet River, downstream from the Dabba Selama monastery Khunale River, in tabia Selam Harehuwa River, in tabia Mahbere Sillasie Kidan Mihret River, in tabia Mahbere Sillasie Ferrey River, at the border of tabias Mahbere Sillasie and Degol Woyane
WWeyib River is a river of eastern Ethiopia. It rises in the Bale Mountains east of Goba in the Oromia Region, flowing east to pass through the Sof Omar Caves, then to the southeast until it joins the Ganale Dorya River in the Somali Region.