Sumida, Tokyo southeast; Taitō to the west; Chūō to the southwest; and Kōtō to the south. The ward was founded on March 15, 1947. It was previously the (ordinary) wards Honjo and Mukojima. Mukojima, formed in 1932, contained the former town of Sumida, which along with the river gave the ward its name. As of 2005, the mayor is Noboru Yamazaki. The council consists of 34 members. Public elementary and middle schools are operated by Sumida. Public high schools are operated by the Tokyo Metropolitan Government Board of Education. In addition, the metropolitan school district also operates a metropolitan junior high school:
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