| Belaya River|
| 239 km|
| Southern Ural Mountains
630 m (2,070 ft)|
11,700 km (4,500 sq mi)
47.9 m/s (1,690 cu ft/s) (103 km from the mouth)
Sim River Wikipedia
Sim River (Russian: Сим) is a river in Chelyabinsk Oblast and the Republic of Bashkortostan in Russia. It is a tributary of the Belaya River, part of the Volga watershed. Its length is 239 kilometers (149 mi).
The river has its sources in the southern Ural Mountains. It first flows in a north-northwesterly direction towards the towns of Sim and Minyar, before turning towards the west and then southwest. After passing the town of Asha the Sim crosses the border of Bashkortostan and continues towards the southwest and its confluence with the Belaya.
Ignateva Cave lies on its banks.