|Country||People's Republic of China, Russia|
|• location||Confluence of Xiaosuifen and Dasuifen rivers|
|• elevation||880 m (2,890 ft)|
|Mouth||Sea of Japan|
|0 m (0 ft)|
|Length||242 km (150 mi)|
|Basin size||16,830 km2 (6,500 sq mi)|
|• average||81.3 m3/s (2,870 cu ft/s) (near mouth)|
The Razdolnaya (Russian: Раздольная, formerly: Суйфун Suyfun) or Suifen (simplified Chinese: 绥芬河; traditional Chinese: 綏芬河; pinyin: Suífēn Hé) is a river in People's Republic of China and Russia. It flows into the Amur Bay of the Sea of Japan.
In Russian, the river was originally known under the same Manchu / Chinese name (rendered as Суйфун (Suifun) in Russian). In 1972, in the aftermath of the Zhenbao Island incident (1969), toponyms of Chinese origin in Primorsky Krai were replaced en masse with newly designed Russian names; as part of this project, the Russian part of the Suifen received the name Razdolnaya, which can be translated from Russian as "widely flowing".
The major tributaries of the river are the Granitnaya (99 km), the Borisovka (86 km) and the Komarovka (76 km, main tributary Rakovka). The city Ussuriysk was founded in 1866 at the confluence of the Suifen and Komarovka rivers.
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