Toyohira River
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The Toyohira River (豊平川 Toyohira-gawa) is a river in Hokkaidō prefecture, Japan. It is 72.5km in length and has drainage area of 859km². It is a tributary of the Ishikari River.
It supplies water to Sapporo city, the capital of Hokkaidō built on the alluvial fan formed by the river. The name 'Sapporo' may be derived from Ainu word for the river.
Jōzankei is a popular attraction with onsen (hot springs) along the upper Toyohira.