[2] Lee stated that the canal would bring clear water source by cleaning layers of sediments that formed in the rivers, create tourist infrastructure and prevent disturbance of logistics.
[6] They argued that the canal would prove disastrous to the natural environment and potentially hazardous to the freshwater sources that nearly 50 million residents of the country depend on.
In addition, many researchers and interested distribution industries prospected the canal would be economically unprofitable because land transportation may be more cost-effective.
Major portions of the Han and Nakdong are far narrower and shallower than is required, with most of the bridges on these rivers being unsuitable as their clearance is too low.
The scale of construction would be enormous; a number of bridges would need to be rebuilt and both rivers would require extensive dredging along the 540-kilometer route.