The Ussuri or Wusuli is a river that runs through Khabarovsk and Primorsky Krais, Russia and the southeast region of Northeast China. It rises in the Sikhote-Alin mountain range, flowing north and forming part of the Sino-Russian border, until it joins the Amur as a tributary to it near Khabarovsk. It is approximately 897 km (557 mi) long. The Ussuri drains the Ussuri basin, which covers 193,000 km2 (75,000 sq mi). Its waters come from rain (60%), snow (30–35%), and subterranean springs. The average discharge is 1,620 m3/s (57,000 cu ft/s), and the average elevation is 1,682 metres (5,518 ft).