Arakawa River (Kantō)
The 883rd longest river in the world
The Arakawa River or Ara River (Hepburn: Arakawa, "kawa" already means "river") is a 173-kilometre (107 mi) long river that flows through Saitama Prefecture and Tokyo. Its average flow in 2002 was 30 m3/s (1, 100 cu ft/s). It originates on Mount Kobushi in Saitama Prefecture, and empties into Tokyo Bay. It has a total catchment area of 2,940 km2 (1, 140 sq mi). The Class A river is one of Tokyo's major sources of tap water, and together with the Tone River, accounts for around 80% of Tokyo's water supply as of 2018. The Okubo water purification plant takes water from the river.
Flows through: Japan.
River data from Wikidata (CC0); lengths normalised to a common unit.