オイナ沢

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オイナ沢 flows into 小波内沢川 , which it joins at N 39° 46′ 41″, E 140° 33′ 8″ at OSM node n755349341, and there 22 km of total upstream flows in. load it's distributaries

オイナ沢 has 1 tributaries.

• (unnamed), which joins it at N 39° 46′ 53″, E 140° 33′ 21″ at OSM node n755783516, and 625 m of total upstream flows in.
load it's tributaries