岩渡沢

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岩渡沢 flows into 土場川 , which it joins at N 40° 47′ 24″, E 141° 15′ 30″ at OSM node n753063988, and there 25 km of total upstream flows in. load it's distributaries

岩渡沢 has 2 tributaries.

• (unnamed), which joins it at N 40° 50′ 10″, E 141° 12′ 42″ at OSM node n753693342, and 846 m of total upstream flows in.
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• (unnamed), which joins it at N 40° 50′ 18″, E 141° 12′ 42″ at OSM node n754057763, and 198 m of total upstream flows in.
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