 The Baragoi River drains the Tirr Tirr Plateau, while the long Suguta River drains an area of of the Kenya Rift valley almost all the way from Paka volcano close to the equator.Lake Suguta at highstand had a volume of about .Rivers transported sediments from the tectonically young terrain into the lake, forming deltas and resulting in high sedimentation rates close to the inlet of the Suguta River.