The length of Nile is about 6,853 km (4,258 miles). The river has two major tributaries, the White Nile and Blue Nile. The White Nile, which is longer among 2 tributaries, 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 and silt. The two tributaries meet near the Sudan's capital, Khartoum.

The area of Nile's drainage basin is 3,400,000 km2 (1,312,747 sq mi), ranked 3rd among largest river drainage basin in the world. Therefore, the affection of Nile River on human's life is very considerable. For example, most of cities and population of Egypt lie along Nile's banks.

Thousands years ago, Nile River had also played a vital role to the foundation and development of Ancient Egypt civilization. This is one of the most glorious civilizations in human history.

Nile is on the top of 10 longest river in the world. To find out the rest of top 10, please clickhere.