(unnamed)

(unnamed) is 1 km long, and has a stream level of 3.

Map of (unnamed)

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(unnamed) flows into 外山川 , which it joins at N 39° 45′ 28″, E 141° 15′ 45″ at OSM node n754196108, and there 17 km of total upstream flows in.

(unnamed) has 1 tributaries.

阿部田沢, which joins it at N 39° 45′ 34″, E 141° 15′ 36″ at OSM node n754358528, and 982 m of total upstream flows in.