Irrigation & Drainage Systems Engineering is very important since it helps determine future Irrigation expectations. Irrigation has been a central feature of agriculture for over 5000 years, and was the premise of the economy and society of various societies, starting from Asia to Arizona. Irrigation is termed because the artificial method of applying water to the soil to assist in growing agricultural crops or maintaining the landscapes once there's shortage of natural water by rain. to boot, irrigation conjointly incorporates a few alternative uses in crop production, that embrace protective plants against frost, suppressing weed growth in grain fields and preventing soil consolidation. In distinction, agriculture that depends solely on direct rain is named as rain-fed or dryland farming. Irrigation & Drainage Systems Engineering are used for dirt suppression, disposal of waste, and in mining. Irrigation is commonly studied alongside evacuation, that is that the natural or artificial removal of surface and sub-surface water from a given space. Water is needed for agriculture. typically this water demand is consummated by rain, but there are some dry areas where irrigation is that the solely method by that water is supplied to crops.