Lake Turkana is amid in the arctic of Kenya's Rift Valley, and fed by three rivers: the Omo of Ethiopia, the Turkwel and the Kerio.

The continued anatomy of Lake Turkana drops bottomward forth the Rift Valley from the Ethiopian border, extending 249 kilometers from arctic to south and 44 km at its widest point with a abyss of 30 meters.

Between four and eight thousand years ago, the Lake continued for added than 400 kilometers from the Omo Valley about as far as Baringo. During this period, the Lake had an outlet, a river abounding northwestwards to accompany the Nile.