The Chusovaya River (Russian: Чусова́я) is a river flowing in Perm Krai, Sverdlovsk Oblast and Chelyabinsk Oblast of Russia. A tributary of the Kama River, which in turn is a tributary of the Volga River, it discharges into the Chusovskoy Cove of the Kamsky Reservoir. The river is remarkable in that it originates on the eastern slopes of the Ural Mountains in Asia, crosses the mountains, and mostly runs on their western slopes in Europe. The Chusovaya River is widely used as a source of water. In particular, its water is taken from the Volchikhinsky Reservoir, 37 square kilometres (14 sq mi), to the Verkhneisetsky Reservoir to supply the major city of Yekaterinburg.