井口川

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井口川 flows into 球磨川 , which it joins at N 32° 14′ 46″, E 130° 53′ 27″ at OSM node n744688294, and there 287 km of total upstream flows in. load it's distributaries

井口川 has 1 tributaries.

• (unnamed), which joins it at N 32° 14′ 29″, E 130° 54′ 39″ at OSM node n744667984, and 326 m of total upstream flows in.
load it's tributaries