Перша

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Перша flows into Усьва , which it joins at N 58° 59′ 27″, E 58° 36′ 12″ at OSM node n360010098, and there 391 km of total upstream flows in. load it's distributaries

Перша has 1 tributaries.

• (unnamed), which joins it at N 59° 6′ 58″, E 58° 37′ 5″ at OSM node n2047698807, and 3 km of total upstream flows in.
load it's tributaries