Kolva(redirected from Kolva River)
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a river in Nenets National Okrug, Arkhangel’sk Oblast, RSFSR, and Komi ASSR; a right tributary of the Usa (Pechora basin).
The Kolva is 546 km long, with a basin area of 18,100 sq km. It originates on the Ianeimusiur upland and takes a meandering course through the Bol’shezemel’skaia Tundra. The Kolva is fed primarily by snow. The high-water period lasts from the end of April through July. The Kolva freezes over in late November and thaws in mid-May.
a river in Perm’ Oblast, RSFSR, right tributary of the Vishera River (Kama basin). Length, 460 km; basin area, 13,500 sq km. The Kolva flows primarily through the western slopes of the Northern Urals. It is fed by mixed sources (primarily snow). The river freezes in early November and thaws in late April or early May. Timber is floated. The Kolva is navigable during high water for a distance of 200–250 km from the mouth. The city of Cherdyn’ is on the river.