大石川

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大石川 flows into 瀬田川 , which it joins at N 34° 54′ 40″, E 135° 54′ 32″ at OSM node n971446693, and there 2,413 km of total upstream flows in. load it's distributaries

大石川 has 4 tributaries.

• 奥山田川, which joins it at N 34° 53′ 28″, E 135° 54′ 38″ at OSM node n971326224, and 24 km of total upstream flows in.
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• 山城谷, which joins it at N 34° 54′ 4″, E 135° 54′ 46″ at OSM node n971338066, and 3 km of total upstream flows in.
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• (unnamed), which joins it at N 34° 54′ 26″, E 135° 54′ 39″ at OSM node n971366132, and 2 km of total upstream flows in.
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• (unnamed), which joins it at N 34° 54′ 31″, E 135° 54′ 37″ at OSM node n971495548, and 578 m of total upstream flows in.
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