Kolva River (Usa)
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- Kolva is also a river in Perm Krai, see Kolva River, Perm Krai.
Kolva River (Russian: Колва) is a river in Arkhangelsk Oblast and the Komi Republic in Russia. It is a right tributary of the Usa River of the Pechora basin. The length of the river is 546 km (339 miles). The area of its basin 18,100 km² (6,990 sq mi). The Kolva River freezes up in late November and stays under the ice until mid-May.