小山川

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小山川 flows into 天神川 , which it joins at N 34° 48′ 29″, E 137° 10′ 57″ at OSM node n727001159, and there 3 km of total upstream flows in. load it's distributaries

小山川 has 1 tributaries.

• (unnamed), which joins it at N 34° 48′ 28″, E 137° 10′ 53″ at OSM node n12060518790, and 383 m of total upstream flows in.
load it's tributaries