‘White Nile meets Blue Nile in Khartoum, Sudan’

The White Nile and Blue Nile rivers meet in the city of Khartoum, the capital of Sudan. Here they form the great Nile River, which then flows north through Egypt to Cairo and empties into the Mediterranean Sea. In this image taken in the 2005 dry season, the still-flowing White Nile is at left, and the nearly dry Blue Nile curves at right. The source of the White Nile, near the equator in Uganda, produces a nearly constant flow throughout the year. The Blue Nile, by contrast, rises from the highlands of Ethiopia where it is fed by the rainfall of summer monsoons, producing floods in autumn but drying out in the spring. (Nasa, CC BY-NC 2.0)