(unnamed)

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(unnamed) flows into 学島川 , which it joins at N 34° 3′ 33″, E 134° 16′ 23″ at OSM node n756344507, and there 5 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• 西八幡谷, which joins it at N 34° 3′ 28″, E 134° 16′ 23″ at OSM node n9441819915, and 516 m of total upstream flows in.
load it's tributaries