山川

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山川 flows into (unnamed) , which it joins at N 36° 9′ 52″, E 139° 56′ 23″ at OSM node n758476066, and there 32 km of total upstream flows in. load it's distributaries

山川 has 2 tributaries.

• 新堀川, which joins it at N 36° 12′ 11″, E 139° 53′ 12″ at OSM node n758442024, and 14 km of total upstream flows in.
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• (unnamed), which joins it at N 36° 10′ 20″, E 139° 55′ 3″ at OSM node n758245880, and 2 km of total upstream flows in.
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