비용 대비 편익 비율은 0.21로, 그나마 한강이 0.69로 높았지만 금강은 0.17, 낙동강은 0.08, 영산강은 0.01에 그쳤다.
The cost-benefit ratio was 0.21, while the Han River was high at 0.69, but only 0.17 for the Geum River, 0.08 for the Nakdong River and 0.01 for the Yeongsan River.