(unnamed)

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(unnamed) flows into 甲川 , which it joins at N 35° 47′ 23″, E 138° 25′ 7″ at OSM node n758647314, and there 47 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• 西川, which joins it at N 35° 47′ 56″, E 138° 25′ 14″ at OSM node n759040180, and 10 km of total upstream flows in.
load it's tributaries