源内川

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源内川 flows into 高波川 , which it joins at N 35° 18′ 6″, E 137° 26′ 13″ at OSM node n726138079, and there 8 km of total upstream flows in. load it's distributaries

源内川 has 1 tributaries.

• (unnamed), which joins it at N 35° 17′ 57″, E 137° 26′ 44″ at OSM node n726168823, and 317 m of total upstream flows in.
load it's tributaries