Iren (river)

The Iren (Ире́нь) is a river in Perm Krai, Russia, a left tributary of the Sylva. It is 214 km long, with a drainage basin of 6110 km2. It starts near village Verh-Iren, in Oktyabrsky District and flows through Uinsky, Ordinsky and Kungursky districts of Perm Krai.

Main tributaries:
 * Left: Uyas, Aspa, Syp, Bym, Bolshoy Ashap, Maly Ashap, Turka
 * Right: Telyos, Kungur.