Nile

The Nile[lower-alpha 2] is a major north-flowing river in northeastern Africa. It flows into the Mediterranean Sea. The longest river in Africa, it has historically been considered the longest river in the world,[4][5] though this has been contested by research suggesting that the Amazon River is slightly longer.[6][7] The Nile is amongst the smallest of the major world rivers by measure of cubic metres flowing annually.[8] About 6,650 km (4,130 mi)[lower-alpha 1] long, its drainage basin covers eleven countries: Tanzania, Uganda, Rwanda, Burundi, the Democratic Republic of the Congo, Kenya, Ethiopia, Eritrea, South Sudan, Republic of the Sudan, and Egypt.[10] In particular, the Nile is the primary water source of Egypt, Sudan and South Sudan.[11] Additionally, the Nile is an important economic river, supporting agriculture and fishing.

Nile
The river in Uganda
Location
CountriesEgypt, Sudan, South Sudan, Ethiopia, Uganda, Congo, Kenya, Tanzania, Rwanda, Burundi
Major citiesJinja, Juba, Khartoum, Cairo
Physical characteristics
SourceWhite Nile
  coordinates02°16′56″S 29°19′53″E
  elevation2,400 m (7,900 ft)
2nd sourceBlue Nile
  locationLake Tana, Ethiopia
  coordinates12°02′09″N 037°15′53″E
MouthMediterranean Sea
  location
Nile Delta, Egypt
  coordinates
30°10′N 31°09′E
  elevation
Sea level
Length6,650 km (4,130 mi)[lower-alpha 1]
Basin size3,400,000 km2 (1,300,000 sq mi)
Width 
  maximum2.8 km (1.7 mi)
Depth 
  average8–11 m (26–36 ft)
Discharge 
  locationAswan
  average2,830 m3/s (100,000 cu ft/s)
Discharge 
  locationCairo
  average1,400 m3/s (49,000 cu ft/s)[1]

The Nile has two major tributaries – the White Nile, which begins at Jinja, Lake Victoria,[12] and the Blue Nile. The White Nile is considered to be the headwaters and primary stream of the Nile itself. The Blue Nile, however, is the source of most of the water, containing 80% of the water and silt. The White Nile is longer and rises in the Great Lakes region. It begins from Uganda Lake Victoria, Uganda and South Sudan. The Blue Nile begins at Lake Tana in Ethiopia[13] and flows into Sudan from the southeast. The two rivers meet just north of the Sudanese capital of Khartoum.[14]

The northern section of the river flows north almost entirely through the Sudanese desert to Egypt, where Cairo is located on its large delta and the river flows into the Mediterranean Sea at Alexandria. Egyptian civilization and Sudanese kingdoms have depended on the river since ancient times and its annual flooding. Most of the population and cities of Egypt lie along those parts of the Nile valley north of Aswan. Nearly all the cultural and historical sites of Ancient Egypt developed and are found along river banks.