(unnamed)

(unnamed) is 1 km long, and has a stream level of 4.

Map of (unnamed)

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(unnamed) flows into 古隅田川 , which it joins at N 35° 59′ 5″, E 139° 44′ 22″ at OSM node n1047359110, and there 24 km of total upstream flows in.

(unnamed) has 3 tributaries.

古隅田川, which joins it at N 35° 58′ 55″, E 139° 43′ 38″ at OSM node n1048301410, and 10 km of total upstream flows in.

豊春用水, which joins it at N 35° 58′ 55″, E 139° 43′ 38″ at OSM node n1048301410, and 8 km of total upstream flows in.

豊春用水, which joins it at N 35° 59′ 6″, E 139° 43′ 33″ at OSM node n1048173858, and 2 km of total upstream flows in.