Irrigation works began seriously in the reign of King Rama V A dredging the canal and the canal up the new area in the plains of central, operated by the private company is digging canals and Marianas Trench, Siam Canals, guard Lands and Irrigation Company) received royal assent on the 2431 start digging canals when the 2433 is performed by concessions 25 years. The project consists of the construction system of the canal. In the plain of the eastern side of the Chao Phraya River, Pathum Thani Province, called the Rangsit canal by big lines connects the Chao Phraya River. Direct to the Nakhon Nayok, along with creating a floodgate for control of catchment เพื่อการเพาะปลูก and creating a door to ship travel water transportation throughout the year.
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