Lake Nasser ( , ) is a vast reservoir in southern Egypt and northern Sudan. It is one of the largest man-made lakes in the world. Strictly, “Lake Nasser” refers only to the much larger portion of the lake that is in Egyptian territory (83% of the total), with the Sudanese preferring to call their smaller body of water Lake Nubia ( , ). The area of Sudan-administered Wadi Halfa Salient was largely flooded by Lake Nasser.