Shape
It is a river that flows northward and flows into Asan Bay, originating from Orseo, Janggok-myeon, Hongseong-gun, Chungcheongnam-do. Its length is 61 km and the watershed area is 1,619 km2. The area, which has been suffering from wastewater since it has not been able to secure agricultural water even though it includes wide plains and tidelands, has been constructed as a giant artificial lake due to its seawall. There are abundant tourist resources such as Duksan Provincial Park, Duksan Hot Spring, Dogo Hot Spring, Yedang Reservoir and Seokgyecheon Dike, and it is being developed as an important tourist attraction.