Khartoum (Arabic: الخرطوم‎ Al Ḫarṭūm) is the capital and largest city of Sudan and of Khartoum State. It is located at the confluence of the White Nile flowing north from Lake Victoria, and the Blue Nile flowing west from Ethiopia. The location where the two Niles meet is known as "al-Mogran". The main Nile continues to flow north towards Egypt and the Mediterranean Sea.
Divided by the Niles, Khartoum is a tripartite metropolis with an estimated overall population of over five million people consisting of Khartoum proper, and linked by bridges to Khartoum North called (al-Khartūm Bahrī) and Omdurman (Umm Durmān) to the west
Reference: http://en.wikipedia.org/wiki/Khartoum%2C_Sudan