(unnamed)

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(unnamed) flows into 川上川 , which it joins at the following points: 48 km of total upstream flows in at N 35° 34′ 16″, E 137° 31′ 48″ at OSM node n725926733 45 km of total upstream flows in at N 35° 34′ 27″, E 137° 31′ 27″ at OSM node n726291619 load it's distributaries

(unnamed) has 2 tributaries.

• 寺功沢, which joins it at N 35° 35′ 1″, E 137° 31′ 30″ at OSM node n726297166, and 1 km of total upstream flows in.
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• 寺屋敷谷, which joins it at N 35° 35′ 10″, E 137° 31′ 36″ at OSM node n726482397, and 428 m of total upstream flows in.
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