安世波川

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安世波川 flows into 立谷沢川 , which it joins at N 38° 43′ 55″, E 140° 0′ 35″ at OSM node n755352773, and there 129 km of total upstream flows in. load it's distributaries

安世波川 has 3 tributaries.

• 双ノ沢, which joins it at N 38° 43′ 34″, E 140° 1′ 7″ at OSM node n755707407, and 4 km of total upstream flows in.
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• (unnamed), which joins it at N 38° 43′ 38″, E 140° 1′ 22″ at OSM node n755412826, and 741 m of total upstream flows in.
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• (unnamed), which joins it at N 38° 43′ 39″, E 140° 1′ 42″ at OSM node n755505263, and 213 m of total upstream flows in.
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