北洞川

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北洞川 flows into (unnamed) , which it joins at N 36° 9′ 45″, E 137° 58′ 35″ at OSM node n748539490, and there 3 km of total upstream flows in. load it's distributaries

北洞川 has 1 tributaries.

• (unnamed) , which joins it at the following points: 408 m of total upstream flows in at N 36° 9′ 21″, E 137° 59′ 37″ at OSM node n747910009 57 m of total upstream flows in at N 36° 9′ 21″, E 137° 59′ 37″ at OSM node n747910009
load it's tributaries