Mras Su River

Mrass-Su (Russian: Мрас-Су, Shor: Прас) is a river in Kemerovo Oblast, Russia. It is a tributary of the Tom River (in the Ob's drainage basin), and has its sources in the Abakan Range. It is 338 kilometres (210 mi) long, with a drainage basin of 8,840 square kilometres (3,410 sq mi).

Map of r. Mrassu, Kemerovskaya Oblast, Russia