The Mara River is a river in that begins in Narok County (Kenya) and in ends in Mara Region (Tanzania), and lies across the migration path of ungulates in the Maasai Mara/Serengeti ecosystem. The River's Flow The Mara River basin covers a surface of 13,504 km2, of which approximately 65% is located in Kenya and 35% in Tanzania. From its sources in the Kenyan highlands, the river flows for about 395 km and originates from the Mau Escarpment and drains into Lake Victoria. The basin can be roughly …