| Sungacha | |
| Source1 Location: | Khanka Lake |
| Mouth: | Ussuri |
| Mouth Coordinates: | 45.5751°N 133.4152°W |
| Subdivision Type1: | Country |
| Length: | 180to |
| Basin Size: | 25600km2 |
The Sungacha or Songacha (Russian: Сунгача Sungacha or Сунгач Sungach,[1]) 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 180to-long Sungacha's length fluctuates, as the stream bed changes every year. The area of its basin is approximately 25600km2, of which 21000km2 within Russia.[2]
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.