(unnamed)

(unnamed) is 5 km long, and has a stream level of 3.

Map of (unnamed)

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(unnamed) flows into 板取川 , which it joins at N 35° 35′ 43″, E 136° 50′ 43″ at OSM node n726032518, and there 234 km of total upstream flows in.

(unnamed) has 3 tributaries.

南谷川支川, which joins it at N 35° 34′ 42″, E 136° 50′ 16″ at OSM node n726065798, and 884 m of total upstream flows in.

丸山谷川, which joins it at N 35° 35′ 29″, E 136° 50′ 20″ at OSM node n726078259, and 616 m of total upstream flows in.

永戸洞谷川, which joins it at N 35° 35′ 20″, E 136° 49′ 50″ at OSM node n725933137, and 509 m of total upstream flows in.