小杉川

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小杉川 flows into 高波川 , which it joins at N 35° 17′ 25″, E 137° 25′ 26″ at OSM node n726497856, and there 12 km of total upstream flows in. load it's distributaries

小杉川 has 1 tributaries.

• (unnamed), which joins it at N 35° 17′ 50″, E 137° 25′ 13″ at OSM node n726162766, and 338 m of total upstream flows in.
load it's tributaries