(unnamed)

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(unnamed) flows into the sea: 172 km flows in at N 39° 27′ 38″, E 141° 11′ 14″ at OSM node n754305116. 3 km flows in at N 39° 27′ 38″, E 141° 11′ 14″ at OSM node n754305116. 862 m flows in at N 39° 27′ 38″, E 141° 11′ 14″ at OSM node n754305116. (unnamed) has 2 distributaries.

• 北上川 , which it joins at the following points: 2,280 km of total upstream flows in at N 39° 28′ 26″, E 141° 9′ 42″ at OSM node n753549994. 2,235 km of total upstream flows in at N 39° 29′ 16″, E 141° 9′ 7″ at OSM node n753770623. 2,282 km of total upstream flows in at N 39° 28′ 4″, E 141° 9′ 44″ at OSM node n754210433. 2,214 km of total upstream flows in at N 39° 29′ 51″, E 141° 9′ 37″ at OSM node n754338441. load it's distributaries
• 稗貫川 , which it joins at the following points: 1 km of total upstream flows in at N 39° 27′ 22″, E 141° 10′ 45″ at OSM node n754029820. 0 m of total upstream flows in at N 39° 27′ 37″, E 141° 12′ 14″ at OSM node n754508271. load it's distributaries

(unnamed) has 1 tributaries.

• 稗貫川, which joins it at N 39° 28′ 35″, E 141° 14′ 23″ at OSM node n753754936, and 165 km of total upstream flows in.
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