(unnamed)

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(unnamed) flows into 長門川 , which it joins at the following points: 26 km of total upstream flows in at N 35° 49′ 14″, E 140° 15′ 1″ at OSM node n758070142 21 km of total upstream flows in at N 35° 49′ 33″, E 140° 14′ 59″ at OSM node n758420969 load it's distributaries

(unnamed) has 1 tributaries.

• 坂田ヶ池, which joins it at N 35° 48′ 59″, E 140° 16′ 21″ at OSM node n758288442, and 652 m of total upstream flows in.
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