 Precipitation is highly variable from year to year.This climate is a consequence of the annual migration of the ITCZ; however the moist air from the Congo Basin does not reach Lake Suguta and that along with the dryness of the Asian monsoon in East Africa explains the precipitation patterns.Bivalves, freshwater snails, ostracods, oysters, prosobranch gastropods and stromatoliths occurred in Lake Suguta.