第1弘成川

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第1弘成川 flows into イタラタラキ川 , which it joins at N 42° 38′ 28″, E 143° 15′ 40″ at OSM node n1475733706, and there 19 km of total upstream flows in. load it's distributaries

第1弘成川 has 2 tributaries.

• (unnamed), which joins it at N 42° 38′ 50″, E 143° 16′ 35″ at OSM node n1475734128, and 2 km of total upstream flows in.
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• 第１弘成川, which joins it at N 42° 38′ 50″, E 143° 16′ 35″ at OSM node n1475734128, and 1 km of total upstream flows in.
load it's tributaries