Saitama (city) city boundaries. The western portion of the city lies on the lowland created by the Arakawa River along with those created by small rivers such as the Moto-Arakawa River, Shiba River, and Ayase River. The rest of the area mostly resides on the Ōmiya Plateau lying in the north-south direction. Dispersed in this region, major rivers flow southward, almost paralleling to one another. Saitama has ten wards ("ku"), which were assigned official colours as of April 2005: Saitama's economy is principally constituted by commercial business. The city is one of many commercial centers of the Greater Tokyo area and serves
Shizuka Arakawa for the ISU Grand Prix Final, where she finished fourth. She later placed third at the Japanese Nationals, marking her fifth medal from this meet, with two golds and two silvers from previous seasons. In 2004, she won the World Championships in Dortmund, Germany, after landing seven clean triple jumps. She was the third Japanese woman to win this title after Midori Ito who won in 1989 and Yuka Sato in 1994. Arakawa had planned to retire after the 2004 World Championships, but her victory there convinced her to change her plans. At the 2005 World Championships, Arakawa finished 9th,