黒岩川

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黒岩川 flows into (unnamed) , which it joins at N 34° 47′ 25″, E 137° 5′ 11″ at OSM node n727114456, and there 5 km of total upstream flows in. load it's distributaries

黒岩川 has 1 tributaries.

• (unnamed), which joins it at N 34° 47′ 25″, E 137° 5′ 12″ at OSM node n5694954739, and 461 m of total upstream flows in.
load it's tributaries