上二股川

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上二股川 flows into 古平川 , which it joins at N 43° 7′ 9″, E 140° 36′ 32″ at OSM node n1451563150, and there 25 km of total upstream flows in. load it's distributaries

上二股川 has 2 tributaries.

• (unnamed), which joins it at N 43° 5′ 57″, E 140° 36′ 12″ at OSM node n1451557745, and 3 km of total upstream flows in.
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• (unnamed), which joins it at N 43° 6′ 22″, E 140° 36′ 4″ at OSM node n1451559994, and 1 km of total upstream flows in.
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