Lake Naivasha
The major rivers from Aberdare Forest are Athi and Tana, which flow into the Indian Ocean, Ewaso Nyiro that drains into the Lorian Swamp and River Malewa that drains into Lake Naivasha. The ranges also have several tributaries, and higher up are bog markings that are the source of the rivers on the moorlands and afro-alpine. The Athi, Lake Naivasha, Tana and Ewaso Nyiro river basins have their source in Aberdare Forest Reserve.