The Iren (Russian: Ире́нь) is a river in Perm Krai, Russia, a left tributary of the Sylva. It is 214 kilometres (133 mi) long, with a drainage basin of 6,110 square kilometres (2,360 sq mi).[1]It starts near village Verh-Iren, in Oktyabrsky District and flows through Uinsky, Ordinsky and Kungursky districts of Perm Krai.
Main tributaries:
