The Sungacha or Songacha ( Sungacha or Сунгач Sungach,Словарь названий гидрографических объектов России и других стран — членов СНГ, Federal Service for Geodesy and Cartography of Russia, 1999, p. 352 ) is a river marking part of the border between the Russian Federation and the People's Republic of China. It is a left tributary of the Ussuri, and the only outflow of Khanka Lake.
The -long Sungacha's length fluctuates, as the stream bed changes every year. The area of its basin is approximately , of which is within Russia. Sungacha River - about Sungacha River.
The river supports a rich diversity of flora and fauna, including Nelumbo nucifera in its basin.
The Sungacha's waters come from rain, snow and springs.
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