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The Nile is a major north-flowing river in northeastern Africa. It flows into the Mediterranean Sea.
The Nile is the longest river in Africa and has historically been considered the longest river in the world, though this has been contested by research suggesting that the Amazon River is slightly longer.
Of the world's major rivers, the Nile is one of the smallest, as measured by annual flow in cubic metres of water. About 6,650 km long, its drainage basin covers eleven countries: the Democratic Republic of the Congo, Tanzania, Burundi, Rwanda, Uganda, Kenya, Ethiopia, Eritrea, South Sudan, Republic of the Sudan, and Egypt.
In particular, the Nile is the primary water source of Egypt, Sudan and South Sudan. Additionally, the Nile is an important economic river, supporting agriculture and fishing.
The Nile has two major tributaries -the White Nile and the Blue Nile. The White Nile is traditionally considered to be the headwaters stream. However, the Blue Nile is the source of most of the water of the Nile downstream, containing 80% of the water and silt. The White Nile is longer and rises in the Great Lakes region. It begins at Lake Victoria and flows through Uganda and South Sudan. The Blue Nile begins at Lake Tana in Ethiopia and flows into Sudan from the southeast. The two rivers meet at the Sudanese capital of Khartoum.
The northern section of the river flows north almost entirely through the Nubian Desert to Cairo and its large delta, and the river flows into the Mediterranean Sea at Alexandria. Egyptian civilization and Sudanese kingdoms have depended on the river and its annual flooding since ancient times. Most of the population and cities of Egypt lie along those parts of the Nile valley north of the Aswan Dam. Nearly all the cultural and historical sites of Ancient Egypt developed and are found along river banks. The Nile is, with the Rhône and Po, one of the three Mediterranean rivers with the largest water discharge.
More information: National Geographic
The standard English names White Nile and Blue Nile refer to the river's source, derived from Arabic names formerly applied to only the Sudanese stretches that meet at Khartoum.
In the ancient Egyptian language, the Nile is called Ḥ'pī (Hapy) or Iteru, meaning river. In Coptic, the word ⲫⲓⲁⲣⲟ, pronounced piaro (Sahidic) or phiaro (Bohairic), means the river, and comes from the same ancient name. In Nobiin the river is called Áman Dawū, meaning the great water. In Luganda the river is called Kiira or Kiyira. In Runyoro it is called Kihiira. In Egyptian Arabic, the Nile is called en-Nīl, while in Standard Arabic it is called an-Nīl. In Biblical Hebrew, it is הַיְאוֹר, Ha-Ye'or or הַשִׁיחוֹר, Ha-Shiḥor.
The English name Nile and the Arabic names en-Nîl and an-Nîl both derive from the Latin Nilus and the Ancient Greek Νεῖλος. Beyond that, however, the etymology is disputed. Homer called the river Αἴγυπτος, Aiguptos, but in subsequent periods, Greek authors referred to its lower course as Neilos; this term became generalised for the entire river system. Thus, the name may derive from Ancient Egyptian expression nꜣ rꜣw-ḥꜣw(t) the mouths of the front parts, which referred specifically to the branches of the Nile transversing the Delta, and would have been pronounced ni-lo-he in the area around Memphis in the 8th century BCE. Hesiod at his Theogony refers to Nilus (Νεῖλος) as one of the Potamoi (river gods), son of Oceanus and Tethys.
Another derivation of Nile might be related to the term Nil, which refers to Indigofera tinctoria, one of the original sources of indigo dye. Another may be Nymphaea caerulea, known as The Sacred Blue Lily of the Nile, which was found scattered over Tutankhamun's corpse when it was excavated in 1922. Another possible etymology derives from the Semitic term Nahal, meaning river. Old Libyan has the term lilu, meaning water (in modern Berber ilel ⵉⵍⴻⵍ means sea).
With a total length of about 6,650 km between the region of Lake Victoria and the Mediterranean Sea, the Nile is among the longest rivers on Earth. The drainage basin of the Nile covers 3,254,555 square kilometers, about 10% of the area of Africa. Compared to other major rivers, though, the Nile carries little water (5% of that of the Congo River, for example). The Nile basin is complex, and because of this, the discharge at any given point along the main stem depends on many factors including weather, diversions, evaporation and evapotranspiration, and groundwater flow.
Upstream from Khartoum (to the south), the river is known as the White Nile, a term also used in a limited sense to describe the section between Lake No and Khartoum. At Khartoum, the river is joined by the Blue Nile. The White Nile starts in equatorial East Africa, and the Blue Nile begins in Ethiopia. Both branches are on the western flanks of the East African Rift.
Below the Aswan Dam, at the northern limit of Lake Nasser, the Nile resumes its historic course. North of Cairo, the Nile splits into two branches (or distributaries) that feed the Mediterranean: the Rosetta Branch to the west and the Damietta to the east, forming the Nile Delta.
More information: Science Alert
Egypt is the gift of the Nile.
Herodotus
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