(unnamed)

(unnamed) is 2 km long, and has a stream level of 3.

Map of (unnamed)

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(unnamed) flows into 古田谷 , which it joins at N 35° 28′ 45″, E 136° 25′ 16″ at OSM node n725968377, and there 5 km of total upstream flows in.

(unnamed) has 2 tributaries.

千正谷, which joins it at N 35° 28′ 50″, E 136° 24′ 49″ at OSM node n726252615, and 1 km of total upstream flows in.

古田川, which joins it at N 35° 28′ 41″, E 136° 25′ 10″ at OSM node n726083471, and 1 km of total upstream flows in.