Remote Sensing and GIS Analysis Approach for Erosion in the Mekong Delta: Case Studies from Bac Lieu to Ca Mau Cape

The coastlines from Bac Lieu to Ca Mau are the gateway to the Mekong Delta region and are essential for the country’s economic development. However, this area is currently facing increasingly complex erosion threats. Developing shoreline maps is necessary for environmental monitoring in the area. This study applies remote sensing methodology, GIS tools and ENVI software to extract the shoreline over the years and then analyze the accreted/eroded areas. The results show that erosion along the coasts of Bac Lieu and Ca Mau in three years, 2021– 2023, has become increasingly complicated. Among the investigated coastal areas, the most erosional area occurred in the Ngoc Hien district and surrounding areas in the Ca Mau province. While the coasts of Bac Lieu province tend to accrete, such as Dong Hai district and Bac Lieu city, erosion occurs in Dat Mui commune (Ngoc Hien district). The application of remote sensing and GIS methods contributes informatively to the local authorities in finding proper solutions to prevent and limit coastal erosion as well as to regulate work for coastal zone planning and management.