１号川

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１号川 flows into チョクベツ川 , which it joins at N 43° 6′ 47″, E 144° 37′ 35″ at OSM node n1460702058, and there 18 km of total upstream flows in. load it's distributaries

１号川 has 2 tributaries.

• ２号川, which joins it at N 43° 6′ 29″, E 144° 38′ 2″ at OSM node n1460698682, and 2 km of total upstream flows in.
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• (unnamed), which joins it at N 43° 6′ 13″, E 144° 38′ 20″ at OSM node n1460695673, and 1 km of total upstream flows in.
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