久保川

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久保川 flows into 清武川 , which it joins at N 31° 50′ 31″, E 131° 25′ 30″ at OSM node n743162661, and there 146 km of total upstream flows in. load it's distributaries

久保川 has 2 tributaries.

• (unnamed), which joins it at N 31° 50′ 37″, E 131° 24′ 30″ at OSM node n743798576, and 982 m of total upstream flows in.
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• (unnamed), which joins it at N 31° 50′ 21″, E 131° 23′ 47″ at OSM node n743094416, and 321 m of total upstream flows in.
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