The project คลองลัดโพธิ์ Royal. Is one of the Royal Project To accelerate the drainage from the north out to the sea. This will help alleviate flooding problems in Bangkok and surrounding areas.Till they reach the terrain perfectly, and brought the main thought of combined with theory and theory of up - down of water. The problems with the use of "the principle of nature." As a guideline to make man and nature coexist forever.