旧忍川

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旧忍川 flows into 星川;見沼代用水 , which it joins at N 36° 7′ 16″, E 139° 31′ 13″ at OSM node n1047285072, and there 97 km of total upstream flows in. load it's distributaries

旧忍川 has 1 tributaries.

• (unnamed), which joins it at N 36° 7′ 44″, E 139° 29′ 41″ at OSM node n1047673873, and 702 m of total upstream flows in.
  load it's tributaries