栃山川

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栃山川 flows into 角川 , which it joins at N 38° 40′ 29″, E 140° 8′ 58″ at OSM node n755263835, and there 35 km of total upstream flows in. load it's distributaries

栃山川 has 2 tributaries.

• 山梨沢, which joins it at N 38° 39′ 31″, E 140° 9′ 29″ at OSM node n755285980, and 2 km of total upstream flows in.
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• 大葉沢, which joins it at N 38° 38′ 57″, E 140° 9′ 57″ at OSM node n755213004, and 1 km of total upstream flows in.
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