Полька

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Полька flows into Истья , which it joins at N 54° 17′ 57″, E 40° 6′ 27″ at OSM node n765107906, and there 497 km of total upstream flows in. load it's distributaries

Полька has 2 tributaries.

• (unnamed), which joins it at N 54° 18′ 34″, E 40° 3′ 19″ at OSM node n772620677, and 18 km of total upstream flows in.
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• Мелисья, which joins it at N 54° 18′ 34″, E 40° 3′ 19″ at OSM node n772620677, and 17 km of total upstream flows in.
load it's tributaries