One of the greatest environmental threats to the entire world is water shortage, water quality degradation, and ecological disturbance. Last year, Republic of Korea proclaimed a national vision, Low Carbon Green Growth , and the Four Major River Restoration project has been initiated as an important implementation tool of the green new deal. The Four Major River Restoration Project is prepared to achieve the following five core tasks: 1) securing water supply, 2) flood control, 3) water quality improvement and ecosystem restoration, 4) development of spaces for cultural and leisure activities, and 5) regional development around four major rivers.