The Ussuri ( oo-SOOR-ee; Russian: Уссури [ʊsˈsurʲɪ]) or Wusuli (Chinese: 乌苏里; pinyin: wūsūlǐ [ǔsǔlî]) is a river that runs through Khabarovsk and Primorsky Krais, Russia and the southeast region of Northeast China in the province of Heilongjiang. It rises in the Sikhote-Alin mountain range, flowing north and forming part of the Sino-Russian border (which is based on the Sino-Russian Convention of Peking of 1860), until it joins the Amur as a tributary near Khabarovsk. It is approximately 897 km (557 mi) long. The Ussuri drains the Ussuri basin, which covers 193,000 km2 (75,000 mi2). 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).
