北砂川

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北砂川 flows into 南砂川 , which it joins at N 34° 59′ 29″, E 136° 15′ 8″ at OSM node n971614676, and there 14 km of total upstream flows in. load it's distributaries

北砂川 has 2 tributaries.

• (unnamed), which joins it at N 34° 59′ 16″, E 136° 15′ 56″ at OSM node n9165697063, and 1 km of total upstream flows in.
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• (unnamed), which joins it at N 34° 58′ 44″, E 136° 17′ 6″ at OSM node n971465349, and 776 m of total upstream flows in.
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