(unnamed)

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(unnamed) flows into 小鳥川 , which it joins at N 36° 8′ 27″, E 137° 4′ 44″ at OSM node n725926653, and there 39 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• 彦谷, which joins it at N 36° 8′ 21″, E 137° 5′ 29″ at OSM node n726172694, and 5 km of total upstream flows in.
load it's tributaries