石堂川

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石堂川 flows into 千曲川 , which it joins at N 36° 7′ 47″, E 138° 28′ 19″ at OSM node n748357757, and there 563 km of total upstream flows in. load it's distributaries

石堂川 has 4 tributaries.

• 大石川, which joins it at N 36° 7′ 40″, E 138° 27′ 30″ at OSM node n748398124, and 40 km of total upstream flows in.
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• 大岳川, which joins it at N 36° 7′ 41″, E 138° 24′ 17″ at OSM node n748188627, and 14 km of total upstream flows in.
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• 入堂川, which joins it at N 36° 7′ 40″, E 138° 27′ 22″ at OSM node n748215310, and 12 km of total upstream flows in.
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• (unnamed), which joins it at N 36° 7′ 41″, E 138° 24′ 21″ at OSM node n747967096, and 4 km of total upstream flows in.
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