Shilka (river)The Shilka is a river in Zabaykalsky Krai, south-eastern Russia. It has a length of, and has a drainage basin of. The name derives from Evenki shilki 'narrow valley.'CourseIt originates as the confluence of the rivers Onon and Ingoda. Its confluence with the Argun on the Russia-China border gives rise to the Amur. The river is navigable for its entire length. The town Sretensk lies on the Shilka.TributariesThe largest tributaries of the Shilka are, from source to mouth: Onon Ingoda Nercha Kuenga Chacha Kara Chyornaya