Перья

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Перья flows into Кострома , which it joins at N 58° 9′ 33″, E 40° 53′ 4″ at OSM node n903134499, and there 5,528 km of total upstream flows in. load it's distributaries

Перья has 2 tributaries.

• Кореш, which joins it at N 58° 10′ 13″, E 40° 52′ 18″ at OSM node n903135054, and 34 km of total upstream flows in.
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• (unnamed), which joins it at N 58° 9′ 38″, E 40° 52′ 41″ at OSM node n903133756, and 4 km of total upstream flows in.
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