(unnamed)

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(unnamed) flows into 宮川 , which it joins at N 36° 30′ 49″, E 138° 5′ 50″ at OSM node n11763874496, and there 8 km of total upstream flows in. load it's distributaries

(unnamed) has 2 tributaries.

• 小滝沢, which joins it at N 36° 30′ 38″, E 138° 5′ 42″ at OSM node n11763874531, and 1 km of total upstream flows in.
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• 番場沢, which joins it at N 36° 30′ 38″, E 138° 5′ 42″ at OSM node n11763874531, and 951 m of total upstream flows in.
load it's tributaries