南俣沢

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南俣沢 flows into 山内黒沢川 , which it joins at N 39° 15′ 22″, E 140° 43′ 55″ at OSM node n755549090, and there 16 km of total upstream flows in. load it's distributaries

南俣沢 has 2 tributaries.

• 松沢, which joins it at N 39° 14′ 46″, E 140° 44′ 10″ at OSM node n755434491, and 6 km of total upstream flows in.
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• 赤滝沢, which joins it at N 39° 14′ 46″, E 140° 44′ 10″ at OSM node n755434491, and 2 km of total upstream flows in.
load it's tributaries