赤岩川

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赤岩川 flows into 商人川 , which it joins at N 34° 30′ 58″, E 131° 46′ 35″ at OSM node n749153681, and there 6 km of total upstream flows in. load it's distributaries

赤岩川 has 1 tributaries.

• (unnamed), which joins it at N 34° 31′ 21″, E 131° 46′ 3″ at OSM node n2906499101, and 338 m of total upstream flows in.
load it's tributaries