後川川

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後川川 flows into 初尾川 , which it joins at N 33° 49′ 34″, E 129° 43′ 24″ at OSM node n716276864, and there 8 km of total upstream flows in. load it's distributaries

後川川 has 1 tributaries.

• (unnamed), which joins it at N 33° 49′ 21″, E 129° 41′ 58″ at OSM node n716276349, and 551 m of total upstream flows in.
load it's tributaries