外川筒砂子川

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外川筒砂子川 flows into 筒砂子川 , which it joins at N 38° 35′ 35″, E 140° 35′ 42″ at OSM node n754705435, and there 21 km of total upstream flows in. load it's distributaries

外川筒砂子川 has 1 tributaries.

• (unnamed), which joins it at N 38° 35′ 49″, E 140° 34′ 57″ at OSM node n754550170, and 843 m of total upstream flows in.
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