古岸４号川

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古岸４号川 flows into 新冠川 , which it joins at N 42° 24′ 30″, E 142° 23′ 53″ at OSM node n1466205453, and there 330 km of total upstream flows in. load it's distributaries

古岸４号川 has 1 tributaries.

• (unnamed), which joins it at N 42° 24′ 54″, E 142° 23′ 50″ at OSM node n1466208349, and 1 km of total upstream flows in.
load it's tributaries