Songacha River

Position of Sungatscha ( Сунгача ) in the catchment area of the Ussuri

Position of Sungatscha (dark blue)

Sungatscha (Russian Сунгача, pinyin: Sōngàchá Hé, also: Songatscha ) is the only outlet of Chankasees on its northeastern shore, forming up to its confluence with the Ussuri 450 km before its confluence with the Amur, the border between Russia ( to the south ) and the People's Republic of China.

The length of the Songatscha varies between 180 km and a maximum of 212 km - 80 km in a straight line - according to the annual changes in the course of the river bed ( nismennost Russian Prichankaiskaja ) in the vast marshy Chankatiefland.

The average width of the meandering flow varied from 30 to 60 m, the average depth is between 3 and 3.5 m at a flow rate of about 0.5 m / s The shores are low and consisted of woods and bushes. The floodplain is covered with grass and the soil consists of loamy black soil or boggy peat deposits.

The catchment area is approximately 25,600 km ², of which 21,000 km ² on the Russian side. On the Russian right side open two with 87 km length equal length tributaries.

The river and its riparian areas provide a rich flora and fauna. Among other things, the Indian lotus flower is native here. It freezes up in November and thaws in March slowly. Due to the continental climate, the ice thickness can reach up to 1 m.