(unnamed)

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(unnamed) flows into 明延川 , which it joins at N 35° 17′ 44″, E 134° 39′ 59″ at OSM node n970735310, and there 30 km of total upstream flows in. load it's distributaries

(unnamed) has 2 tributaries.

• 古屋川, which joins it at N 35° 17′ 39″, E 134° 39′ 43″ at OSM node n970191319, and 6 km of total upstream flows in.
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• 柳川, which joins it at N 35° 17′ 39″, E 134° 39′ 43″ at OSM node n970191319, and 2 km of total upstream flows in.
load it's tributaries