the name of several rivers in Perm’ Oblast, RSFSR. The largest of these flows from the left into the Us’va River (Kama basin). Length, 170 km; basin area, 3,020 sq km. The Vil’va flows along the western slope of the Central Urals through taiga forests. It has many rapids. The Vil’va can be used for floating timber. There are deposits of hard coal (at Gremiachinsk) in the Vil’va basin.