二十一川

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二十一川 flows into the sea: 7 km flows in at N 40° 27′ 1″, E 141° 40′ 57″ at OSM node n753444442.

二十一川 has 1 tributaries.

• (unnamed), which joins it at N 40° 26′ 42″, E 141° 40′ 25″ at OSM node n753557515, and 2 km of total upstream flows in.
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