Syun

The Syun (Сөн, Sön; Сюнь; Сөн, Sön) is a river in Bashkortostan and Tatarstan, Russian Federation, a left-bank tributary of the Belaya (Kama basin). It is 209 km long, of which 74 km are in Tatarstan. Its drainage basin covers 4500 km2. Major tributaries in Tatarstan are the Kalmiya, Sikiya, Terpelya, Bezyada, and Sharan in Bashkortostan. The maximal water discharge is 655 m3/s (1979), and the maximal mineralization 500 to 1000 mg/L. Average sediment at the mouth per year is 120 mm. Drainage is regulated. Since 1978 it is protected as a "natural monument of Tatarstan".