|Dema River (Дёма)|
The Dema at Bochkarevka
Dyoma (Bashkir: Дим, Dim, Russian: Дёма) is a river in the Republic of Bashkortostan, Russia. It flows north and joins the Belaya River at Ufa. The river is 535 kilometres (332 mi) long, with a drainage basin of 12,800 square kilometres (4,900 sq mi) and an average discharge of 35 cubic metres per second (1,200 cu ft/s).
The Dyoma has its sources on the northern slopes of the Obshchy Syrt plateau at the border of Orenburg Oblast north of the south-flowing Salmysh branch of the Sakmara River. From there, it flows towards the northeast into Bashkortostan, where it forms a wide valley. Here, the river runs slowly, and is heavily meandering, particularly in its lower reaches before its confluence with the Belaya.