(unnamed)

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(unnamed) flows into 内津川 , which it joins at N 35° 19′ 8″, E 137° 2′ 44″ at OSM node n727117779, and there 11 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• 岩ヶ根川, which joins it at N 35° 19′ 0″, E 137° 2′ 49″ at OSM node n727237502, and 266 m of total upstream flows in.
load it's tributaries