Mara River
The forest area has some of the highest rainfall rates in Kenya. Mau Forest is the largest drainage basin in Kenya. Numerous rivers originate from the forest, including the Southern Ewaso Ng'iro, Sondu River, Mara River and Njoro River. These rivers feed Lake Victoria, Lake Nakuru and Lake Natron. The western slopes of the Mau Escarpment are covered by the Mau Forest.