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Planning and design of surface drainage system of an agricultural farmland using HCS curve number method with most economical section

Most common reason for the waterlogging problem in the agricultural field is absence of an adequate drainage system. The sustainability of farm operations are highly vulnerable due to fluctuations in rainfall. Thus, the estimation of drainage design layout and identification of the vulnerable area for waterlogging are the most vital operations for achieving maximum yield of paddy inland. In this study, the Cypress creek formula‘s used for estimating discharge of each plot. By using formula‘s for most economical trapezoidal section, sizes of field laterals, sub-main and main drain are designed that provides assistance in making an appropriate plan for removal of excess water from the area. | Planning and design of surface drainage system of an agricultural farmland using HCS curve number method with most economical section