(unnamed)

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(unnamed) flows into 平井川 , which it joins at N 35° 46′ 8″, E 139° 12′ 18″ at OSM node n697403954, and there 10 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• 肝要沢, which joins it at N 35° 46′ 7″, E 139° 12′ 10″ at OSM node n702540063, and 963 m of total upstream flows in.
load it's tributaries