Vishera River (Perm Krai)

The Vishera River (Вишера) is a river in Perm Krai, Russia, left tributary of the Kama River. It is 415 km in length. The area of its basin is 31,200 km². Main tributaries: Yazva and Kolva. The Vishera River freezes up in the late October–early November and stays under the ice until the end of April. There are diamond deposits in the basin of the Vishera River.