By 2050, a loss of about 2% of GDP has been projected with the sea level rises by 18- 38 cm. By 2100, if the sea level rises by 100 cm, 6.3% of Viet Nam s land area will be submerged, of which about 570,000 ha is rice paddy in the Mekong River Delta causing an estimated loss of more than 3,177,000 tonnes of rice, equivalent to VND 17,500 billion (at 2016 prices); 4% of the railway system, 9% of the national highway system and 12% of the provincial roadway system will be affected, of which the transportation system in the Mekong River Delta will suffer the most (about 28% for national roadways and 27% for provincial roadways).