which stretches across the Nile 600 miles south of Cairo. The dam has effectively stopped the river's annual floods by trapping its waters in a reservoir that is slowly released during the dry season.

Updated Oct. 15 at 1:29 p.m. A colossal dam is near completion on ... In Sudan’s capital, Khartoum, the Blue Nile merges with the White Nile, a snaking river that has passed through the swamps ...