(unnamed)

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(unnamed) flows into 日坂川 , which it joins at N 35° 33′ 0″, E 136° 26′ 57″ at OSM node n726272367, and there 11 km of total upstream flows in. load it's distributaries

(unnamed) has 2 tributaries.

• 殿又谷, which joins it at N 35° 33′ 3″, E 136° 26′ 35″ at OSM node n726101290, and 2 km of total upstream flows in.
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• 瀬戸谷, which joins it at N 35° 33′ 10″, E 136° 26′ 40″ at OSM node n726063618, and 1 km of total upstream flows in.
load it's tributaries