Gezira Scheme Between While and Blue Nile Rivers15.5N 32.5E
True to its name, the White Nile River (left) does have a lighter color than the Blue Nile (right). The two rivers converge near Khartoum, at the top of the full image.
Between the two rivers is the Gezira Scheme, one of the largest irrigation projects in the world. It is centered on the Sudanese state of Al Jazirah.
The Gezira (which means “island”) is particularly suited to irrigation because the soil slopes away from the Blue Nile and water therefore naturally runs through the irrigation canals by gravity. The soil has a high clay content which keeps down losses from seepage.