山口川

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山口川 flows into 久志川 , which it joins at N 31° 18′ 39″, E 130° 13′ 32″ at OSM node n743197225, and there 6 km of total upstream flows in. load it's distributaries

山口川 has 1 tributaries.

• (unnamed), which joins it at N 31° 18′ 40″, E 130° 13′ 52″ at OSM node n744262207, and 461 m of total upstream flows in.
load it's tributaries