Donggang River is a river in Yeongwol and Jeongseon county, South Korea. It remains the cleanest river and region in whole S. Korea which has gone through sharp industrial development. It is a tributary to the South Hangang River that covers an area of 60 km. The Donggang River follows a snaky path splitting the chiseled cliffs surrounding it. Many tourists visit the area to see rare animals such as otters, Mandarin ducks, and Chinese scops owls. It is largely recommended to experience rafting in Donggang. However, the tourists are getting together year by year and water pollution is concerned within river area.