原田川

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原田川 flows into 内山川 , which it joins at N 31° 57′ 34″, E 131° 16′ 36″ at OSM node n742774474, and there 16 km of total upstream flows in. load it's distributaries

原田川 has 1 tributaries.

• (unnamed), which joins it at N 31° 57′ 32″, E 131° 16′ 5″ at OSM node n743864864, and 887 m of total upstream flows in.
load it's tributaries