Bierzwienna

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Bierzwienna flows into Graniczna , which it joins at N 51° 5′ 26″, E 17° 16′ 36″ at OSM node n1811330516, and there 104 km of total upstream flows in. load it's distributaries

Bierzwienna has 2 tributaries.

• (unnamed), which joins it at N 51° 3′ 50″, E 17° 17′ 44″ at OSM node n12139603010, and 1 km of total upstream flows in.
  load it's tributaries
• (unnamed), which joins it at N 51° 4′ 30″, E 17° 17′ 26″ at OSM node n1884443677, and 794 m of total upstream flows in.
  load it's tributaries