一の宮川

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一の宮川 flows into (unnamed) , which it joins at N 34° 43′ 24″, E 137° 31′ 45″ at OSM node n735363168, and there 9 km of total upstream flows in. load it's distributaries

一の宮川 has 1 tributaries.

• 山口川, which joins it at N 34° 42′ 44″, E 137° 31′ 25″ at OSM node n735906342, and 1 km of total upstream flows in.
load it's tributaries