建岩川

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建岩川 flows into the sea: 4 km flows in at N 42° 46′ 42″, E 140° 14′ 21″ at OSM node n9225729518.

建岩川 has 1 tributaries.

• (unnamed), which joins it at N 42° 46′ 44″, E 140° 14′ 7″ at OSM node n1451511254, and 1 km of total upstream flows in.
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