The Geum River is located in South Korea. It is a major river that originates in Jangsu-eup, North Jeolla Province. It flows northward through North Jeolla and North Chungcheong Provinces and then changes direction in the vicinity of Greater Daejeon and flows southwest through South Chungcheong Province before emptying into the Yellow Sea near Gunsan city.The river is 401 kilometres (249 mi) long, making it the third longest in South Korea.