(unnamed)

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(unnamed) flows into 銅山川 , which it joins at N 33° 54′ 26″, E 133° 30′ 1″ at OSM node n756032650, and there 110 km of total upstream flows in. load it's distributaries

(unnamed) has 2 tributaries.

• 富郷渓谷, which joins it at N 33° 54′ 31″, E 133° 29′ 34″ at OSM node n756459771, and 95 km of total upstream flows in.
load it's tributaries
• 豊受川, which joins it at N 33° 54′ 31″, E 133° 29′ 34″ at OSM node n756459771, and 1 km of total upstream flows in.
load it's tributaries