小山川

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小山川 flows into 上山川 , which it joins at N 34° 54′ 42″, E 134° 8′ 20″ at OSM node n751681877, and there 4 km of total upstream flows in. load it's distributaries

小山川 has 1 tributaries.

• (unnamed), which joins it at N 34° 54′ 5″, E 134° 8′ 10″ at OSM node n751477882, and 326 m of total upstream flows in.
load it's tributaries