Sungacha

The Sungacha or Songacha (Сунгача Sungacha or Сунгач Sungach, ) 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 180 to 210 km-long Sungacha's length fluctuates, as the stream bed changes every year. The area of its basin is approximately 25600 km2, of which 21000 km2 within Russia.

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.