The Sungacha or Songacha (Russian: Сунгача Sungacha or Сунгач Sungach,[1] Chinese: 松阿察河; pinyin: Sōngàchá Hé) is a river marking part of the border between the Russian Federation and the People's Republic of China.

The 180-to-210-kilometer (110 to 130 mi)-long Sungacha's length fluctuates, as the stream bed changes every year.

[2] The river supports a rich diversity of flora and fauna, including Nelumbo nucifera in its basin.

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