山口川

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山口川 flows into 南川 , which it joins at N 37° 26′ 4″, E 140° 47′ 48″ at OSM node n757034658, and there 30 km of total upstream flows in. load it's distributaries

山口川 has 2 tributaries.

• (unnamed), which joins it at N 37° 25′ 42″, E 140° 44′ 59″ at OSM node n757027928, and 555 m of total upstream flows in.
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• (unnamed), which joins it at N 37° 25′ 36″, E 140° 44′ 43″ at OSM node n756198943, and 534 m of total upstream flows in.
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