(unnamed)

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(unnamed) flows into 土師川 , which it joins at N 35° 12′ 40″, E 134° 12′ 14″ at OSM node n749338898, and there 13 km of total upstream flows in. load it's distributaries

(unnamed) has 2 tributaries.

• 奥本川, which joins it at N 35° 12′ 36″, E 134° 12′ 12″ at OSM node n749405421, and 3 km of total upstream flows in.
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• 宇丹谷川, which joins it at N 35° 12′ 36″, E 134° 12′ 12″ at OSM node n749405421, and 1 km of total upstream flows in.
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