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The Blue Nile [note 1] is a river originating at Lake Tana in Ethiopia.It travels for approximately 1,450 km (900 mi) through Ethiopia and Sudan.Along with the White Nile, it is one of the two major tributaries of the Nile and supplies about 85.6% of the water to the Nile during the rainy season.
During the dry season the natural discharge of the Blue Nile can be as low as 113 m 3 /s (4,000 cu ft/s), although upstream dams regulate the flow of the river. During the wet season, the peak flow of the Blue Nile often exceeds 5,663 m 3 /s (200,000 cu ft/s) in late August (a difference of a factor of 50).
Blue Nile Falls. The Blue Nile Falls is a waterfall on the Blue Nile river in West Gojjam, Amhara Region, Ethiopia. It is known as Tis Abay in Amharic, meaning 'great smoke'. It is situated on the upper course of the river, about 30 kilometres (19 miles) downstream from the town of Bahir Dar and Lake Tana. The falls are one of Ethiopia's best ...
The Blue Nile is a river originating at Lake Tana in Ethiopia. With the White Nile, it is one of the two major tributaries of the Nile. The Blue Nile supplies about 80% of the water in the Nile during the rainy season.
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.
The Blue Nile Basin is a major geological structure in the northwestern Ethiopian Plateau formed in the Mesozoic Era during a period of crustal extension associated with the break-up of Gondwana, and filled with sedimentary deposits. The modern Blue Nile river cuts across part of the sedimentary basin. [1]
The Jamma River (Amharic: ጃማ) is a river in central Ethiopia and a tributary to the Abay (or Blue Nile). 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 ...
The Sennar Dam and Blue Nile, photo by crew of Discovery, STS-29, March 15, 1989 The Sennar Dam is an irrigation dam on the Blue Nile near the town of Sennar in the Al Jazirah region of Sudan . The dam is 3,025 metres (9,925 ft) long and has a maximum height of 40 metres (130 ft).