About Drainage Engineering I
This course covers the following portions, Introduction: Forms and nature of occurrence of water in soils, soil moisture characteristics, Flow of water in soils, Darcy’s law and Richard’s equation, soil water movement above water Table. Drainage and Crop production: The need for drainage, Drainage to control pounding, Drainage to control water logging Drainage to control salinization, Benefits of drainage. Drainage Systems: Components of a drainage system, Field Drainage systems: Surface drainage systems, subsurface drainage systems and compound drainage systems. Factors Related to Drainage: Drainage coefficient, Water Table, Depth to the water table, Dissolved Salts in the ground water, measuring ground water salinity, Hydraulic conductivity, Topography, impermeable layer irrigation water quality, Soil Salinity: Saline, alkaline and saline-alkali soils, salinization due to irrigation, Drainage for salinity control. Land Reclamation techniques for salt affected soils.