(unnamed)

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(unnamed) flows into the sea: 678 m flows in at N 34° 33′ 1″, E 136° 17′ 50″ at OSM node n734327291. 203 m flows in at N 34° 33′ 1″, E 136° 17′ 50″ at OSM node n734327291. (unnamed) flows into 八手俣川 , which it joins at N 34° 32′ 54″, E 136° 18′ 51″ at OSM node n734708976, and there 54 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• 上杉谷川, which joins it at N 34° 32′ 55″, E 136° 17′ 52″ at OSM node n734753794, and 521 m of total upstream flows in.
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