更級川

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更級川 flows into 千曲川 , which it joins at N 36° 31′ 35″, E 138° 6′ 25″ at OSM node n748224133, and there 2,238 km of total upstream flows in. load it's distributaries

更級川 has 2 tributaries.

• 宮川, which joins it at N 36° 30′ 49″, E 138° 6′ 3″ at OSM node n747979766, and 8 km of total upstream flows in.
  load it's tributaries
• 兎沢川, which joins it at N 36° 30′ 53″, E 138° 6′ 12″ at OSM node n748548086, and 1 km of total upstream flows in.
  load it's tributaries