亀洞川

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亀洞川 flows into (unnamed) , which it joins at N 35° 29′ 15″, E 137° 6′ 33″ at OSM node n726061842, and there 2 km of total upstream flows in. load it's distributaries

亀洞川 has 1 tributaries.

• (unnamed), which joins it at N 35° 29′ 28″, E 137° 6′ 36″ at OSM node n726330412, and 35 m of total upstream flows in.
load it's tributaries