Toyonagawa is a river flowing through Sapporo City, Hokkaido, Japan, and is one of the tributaries of Ishikari River. Since Toyonagawa runs through the city streets of Sapporo City, it is the most important river for the management and water conservancy of Sapporo City. Toyonagawa is72.5 kilometers long and has a basin area of 859 square kilometers.
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Toyonagawa is a river flowing through Sapporo City, Hokkaido, Japan, and is one of the tributaries of Ishikari River. Since Toyonagawa runs through the city streets of Sapporo City, it is the most important river for the management and water conservancy of Sapporo City. Toyonagawa is72.5 kilometers long and has a basin area of 859 square kilometers.