The Syun (Bashkir: Сөн, Russian: Сюнь, Tatar: Cyrillic Сөн, Latin Sön) is a river in Bashkortostan and Tatarstan, Russian Federation, a left-bank tributary of the Belaya (Kama basin). It is 209 kilometres (130 mi) long,[1] of which 74 kilometres (46 mi) are in Tatarstan. Its drainage basin covers 4,500 square kilometres (1,700 sq mi).[1] Major tributaries in Tatarstan are Kalmiya, Sikiya, Terpelya, Bezyada, and Sharan in Bashkortostan. The maximal water discharge is 655 cubic metres per second (23,100 cu ft/s) (1979), and the maximal mineralization 500 to 1000 mg/l. Average sediment at the mouth per year is 120 millimetres (4.7 in). Drainage is regulated. Since 1978 it is protected as a "natural monument of Tatarstan".[2]

Sön, Syun
RepublicsBashkortostan and Tatarstan
Physical characteristics
 • locationBashkortostan
 • coordinates
55°43′11″N 54°16′37″E / 55.71972°N 54.27694°E / 55.71972; 54.27694Coordinates: 55°43′11″N 54°16′37″E / 55.71972°N 54.27694°E / 55.71972; 54.27694
Length209 km (130 mi)
Basin size4,500 km2 (1,700 sq mi)
 • average14.8 m3/s (520 cu ft/s)
Basin features
ProgressionBelayaKamaVolgaCaspian Sea


  1. ^ a b «Река СЮНЬ», Russian State Water Registry
  2. ^ "Сөн". Tatar Encyclopaedia (in Tatar). Kazan: The Republic of Tatarstan Academy of Sciences. Institution of the Tatar Encyclopaedia. 2002.