 A Nilotic fauna has been found in fossils associated with Lake Suguta, which endorses the idea that the lake was formerly connected with Lake Turkana and the Nile.The Suguta valley was occupied by a lake starting from 0.8-0.5 million years ago, but a lake existed here already 1–0.7 million years ago.A first highstand occurred 121,000 ± 20,000 years ago.