山口川

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山口川 flows into 長野川 , which it joins at N 32° 29′ 11″, E 131° 27′ 17″ at OSM node n742899388, and there 9 km of total upstream flows in. load it's distributaries

山口川 has 1 tributaries.

• (unnamed), which joins it at N 32° 28′ 42″, E 131° 26′ 33″ at OSM node n743117225, and 351 m of total upstream flows in.
load it's tributaries