Sumida River Sumida River The is a river that flows through Tokyo, Japan. It branches from the Arakawa River at Iwabuchi and flows into Tokyo Bay. Its tributaries include the Kanda and Shakujii rivers. What is now known as the "Sumida River" was previously the path of the Ara-kawa. However, towards the end of the Meiji era work was carried out to divert the main flow of the Ara-kawa to prevent flooding. It passes through the following wards of Tokyo: Sumida Gawa pottery was named after the Sumida River and was originally manufactured in the Asakusa district near Tokyo by potter Inoue
Arakawa River (Fukushima) The name Arakawa comes from the river long being known as an , meaning a river that floods often. Due these floodings, the Arakawa River has changed its course multiple times. The Ōmori River, now a tributary of the Arakawa River, currently flows in the former main riverbed of the Arakawa River. The Arakawa River's steep descent in the Tsuchiyu Onsen area formerly caused multiple earth and rock slides. To prevent further damage, in 1900 Fukushima Prefecture began flood control construction on the river, and in 1936 the country took over and began construction of the . The construction proved