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The Basin is the main supplier of fresh water, electricity, and fish for the local residents of these countries, supporting about 270 million inhabitants, or 20% of the African population. The basin rises in the highlands and flows in extremely arid regions, in particular the Sahara Desert. [3]
Treaties have resulted in inequitable rights to the use of Nile water between the countries of the Nile Basin. April 15, 1891 – Article III of the Anglo-Italian Protocol. Article III states that "the Italian government engages not to construct on the Atbara River, in view of irrigation, any work which might sensibly modify its flow into the ...
The Nile is the only significant source of water in North Africa and 40% of Africa’s population lives in the Nile River Basin. [3] The Nile has two major tributaries: the White Nile and the Blue Nile. The White Nile is the longer of the two, rising in the Great Lakes Region of central Africa.
The Bahr al Ghazal's drainage basin is the largest of any of the Nile's sub-basins, measuring 520,000 square kilometers (200,000 sq mi) in size, but it contributes a relatively small amount of water, about 2 m 3 /s (71 cu ft/s) annually, because tremendous volumes of water are lost in the Sudd wetlands.
All drainage water in Upper Egypt, south of Cairo, flows back into the Nile and the irrigation canals; this amount is estimated at 4 km3/yr. Drainage water in the Nile Delta is estimated at 14 km3/yr. [3] As mentioned below about 10 km3/year of drainage water in the Delta that originates from freshwater is being pumped to the sea. Reuse of ...
The flow of the Blue Nile reaches maximum volume in the rainy season from June to September, when it supplies 80–86% of the water of the Nile proper. The river was a major source of the flooding of the Nile in Egypt that contributed to the fertility of the Nile Valley and the consequent rise of Ancient Egypt and Egyptian mythology.
Politically contested watersheds include the Tigris–Euphrates river system which drains to the south-east through Iraq into the Persian Gulf, the Nile basin which drains northward through Egypt into the eastern Mediterranean Sea, and the Jordan River basin which flows into the Dead Sea (400 m below sea level), a land-locked and highly saline ...
The average flow rate at the mouth of the Amazon is sufficient to fill more than 83 such pools each second. The estimated global total for all rivers is 1.2 × 10 6 m 3 /s (43 million cu ft/s), [ 1 ] of which the Amazon would be approximately 18%.