関口沢

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関口沢 flows into 吾妻川 , which it joins at N 36° 32′ 43″, E 138° 57′ 31″ at OSM node n759219785, and there 1,266 km of total upstream flows in. load it's distributaries

関口沢 has 1 tributaries.

• 鳥屋日向沢, which joins it at N 36° 33′ 34″, E 138° 57′ 40″ at OSM node n760067103, and 812 m of total upstream flows in.
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