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river in Ishikari,Hokkaido

1.Ishikari River
The Ishikari River (石狩川, Ishikari-gawa), at 268 kilometres (167 mi)[1] long, is the third longest in Japan and the longest in Hokkaidō. The river drains an area of 14,330 square kilometres (5,530 sq mi),[1] making it the second largest in Japan, with a total discharge of around 14.8 cubic kilometres (3.6 cu mi) per year.
Wikipedia  detail