西川

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西川 flows into 千曲川 , which it joins at N 36° 22′ 2″, E 138° 17′ 59″ at OSM node n748424998, and there 1,460 km of total upstream flows in. load it's distributaries

西川 has 1 tributaries.

• 成沢川, which joins it at N 36° 21′ 52″, E 138° 18′ 21″ at OSM node n748573455, and 8 km of total upstream flows in.
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