Lake Katam is a lake in the Ounianga Kebir group, a lake system in the Borkou-Ennedi-Tibesti Region in the north-east basin of Chad. These lakes are notable for their running in the northâÂÂsouth headlands, by the Trade wind are formed. They are the remnant of a much larger lake that filled the basin during the so-called green Sahara-time, which lasted from about BC 10000âÂÂ1500.
Lake Katam is one of the two main lakes in the area (the other being Lake Yoa), and all are saline.