(unnamed)

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(unnamed) flows into 早戸川 , which it joins at N 35° 29′ 41″, E 139° 9′ 33″ at OSM node n1047750715, and there 6 km of total upstream flows in. load it's distributaries

(unnamed) has 2 tributaries.

• 原小屋沢, which joins it at N 35° 29′ 43″, E 139° 9′ 22″ at OSM node n1047838407, and 2 km of total upstream flows in.
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• 中ノ沢, which joins it at N 35° 29′ 43″, E 139° 9′ 22″ at OSM node n1047838407, and 737 m of total upstream flows in.
load it's tributaries