The natural disaster that happen every year in coastal area is eroded disappear a wide area of the 30 years gone more than hundred acres.) Most dangerous is the province and, bang Khun thian.The rate of erosion than 25 meters per year, and 20-25 meters per year. There are many provinces lost coast, such as Rayong 5 critical coastal Thai 1.Coastal canal house top - Khun Royal observation, province ocean Pagani. Distances 12.5 km retreat in approximately 700 - 800 meters 2. Coastal canal observation - Royal House Tako Bang Khun thian District, Bangkok 5.5 km distanceErosion 20-25 meters per year, lost 400-800 M. 3. Coastal home khian black - house casino. A. Sala in Nakorn Sri 4. Coastal ban Laem talumphuk - Bo, Pakphanang Nakorn Sri 5. Coast Island Home Tang - house in front of the court in Si, a length of about 23 km.The rate of erosion about 12 M.That year, in addition to the vast amounts of water that exceeded the existing dam in Thailand will accommodate all. And causing flooding in several provinces.