Lake Bogoria is a saline, alkaline lake that lies in a volcanic region in Kenya. Like Lake Nakuru, Lake Elmenteita, and Lake Magadi further south in the Rift Valley, and Lake Logipi to the north, it is home at times to one of the world’s largest populations of lesser flamingos.The lake waters contain large concentrations of Na+, HCO3? and CO32? ions. They originate from inflow from the Sandai and Emsos rivers, and from about 200 alkaline hot springs that are present at three onshore sites: Loburu, Chemurkeu, and a southern group (Ng’wasis, Koibobei, Losaramat). Other springs discharge directly from the lake floor. Lake Bogoria also contains the highest concentration of true geysers in Africa (at least 18 are known).