主ノ丸川

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主ノ丸川 flows into 切原川 , which it joins at N 32° 10′ 42″, E 131° 28′ 15″ at OSM node n743206424, and there 16 km of total upstream flows in. load it's distributaries

主ノ丸川 has 1 tributaries.

• (unnamed), which joins it at N 32° 11′ 31″, E 131° 27′ 48″ at OSM node n743239719, and 1 km of total upstream flows in.
load it's tributaries