The Sagan River is a seasonal river in southern Ethiopia. Rising in the Ethiopian Highlands mountains east of Lake Chamo, it flows south then west to join the Weito River at . It defines part of the boundary between the Southern Nations, Nationalities, and Peoples' Region and the Oromia Region. Tributaries of the Sagan include the Talpeena. See also List of rivers of Ethiopia Rivers of Ethiopia Ethiopian Highlands Geography of Oromia Region Southern Nations, Nationalities, and Peoples' Region