(unnamed)

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(unnamed) flows into 紅葉川 , which it joins at N 38° 18′ 39″, E 140° 26′ 16″ at OSM node n755282846, and there 42 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• 遊仙峡, which joins it at N 38° 17′ 35″, E 140° 27′ 58″ at OSM node n755116664, and 1 km of total upstream flows in.
load it's tributaries