(unnamed)

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(unnamed) flows into 明延川 , which it joins at N 35° 17′ 9″, E 134° 40′ 18″ at OSM node n970571601, and there 20 km of total upstream flows in. load it's distributaries

(unnamed) has 2 tributaries.

• 松谷川, which joins it at N 35° 17′ 12″, E 134° 40′ 35″ at OSM node n969682614, and 2 km of total upstream flows in.
load it's tributaries
• 田淵川, which joins it at N 35° 17′ 12″, E 134° 40′ 35″ at OSM node n969682614, and 2 km of total upstream flows in.
load it's tributaries