(unnamed)

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(unnamed) flows into 吉野瀬川 , which it joins at N 35° 52′ 30″, E 136° 4′ 53″ at OSM node n719833547, and there 10 km of total upstream flows in. load it's distributaries

(unnamed) has 2 tributaries.

• 小信川, which joins it at N 35° 51′ 17″, E 136° 6′ 11″ at OSM node n719800023, and 510 m of total upstream flows in.
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• 湯谷川, which joins it at N 35° 51′ 29″, E 136° 5′ 5″ at OSM node n719799106, and 477 m of total upstream flows in.
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