(unnamed)

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(unnamed) flows into 草野川 , which it joins at N 35° 27′ 16″, E 136° 19′ 59″ at OSM node n971583141, and there 29 km of total upstream flows in. load it's distributaries

(unnamed) has 2 tributaries.

• 指南谷川, which joins it at N 35° 27′ 21″, E 136° 20′ 11″ at OSM node n971566829, and 216 m of total upstream flows in.
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• 松ヶ谷川, which joins it at N 35° 27′ 21″, E 136° 20′ 11″ at OSM node n971566829, and 135 m of total upstream flows in.
load it's tributaries