(unnamed)

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(unnamed) flows into the sea: 5 km flows in at N 36° 35′ 50″, E 138° 11′ 40″ at OSM node n5905468716. 2 km flows in at N 36° 35′ 12″, E 138° 8′ 15″ at OSM node n6290658813. (unnamed) has 2 distributaries.

• 千曲川 , which it joins at the following points: 2,421 km of total upstream flows in at N 36° 34′ 12″, E 138° 10′ 11″ at OSM node n748016518. 2,429 km of total upstream flows in at N 36° 34′ 43″, E 138° 11′ 23″ at OSM node n748136208. 2,465 km of total upstream flows in at N 36° 35′ 16″, E 138° 11′ 39″ at OSM node n748455561. 2,480 km of total upstream flows in at N 36° 35′ 51″, E 138° 12′ 53″ at OSM node n748496817. load it's distributaries
• 岡田川 , which it joins at N 36° 34′ 13″, E 138° 7′ 41″ at OSM node n747924556, and 10 km of total upstream flows in. load it's distributaries

(unnamed) has 0 tributaries.