西山川

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西山川 flows into (unnamed) , which it joins at N 32° 45′ 4″, E 129° 53′ 1″ at OSM node n716060582, and there 16 km of total upstream flows in. load it's distributaries

西山川 has 2 tributaries.

• (unnamed), which joins it at N 32° 46′ 21″, E 129° 54′ 2″ at OSM node n716061507, and 4 km of total upstream flows in.
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• (unnamed), which joins it at N 32° 45′ 58″, E 129° 53′ 24″ at OSM node n5942801223, and 841 m of total upstream flows in.
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