Water resources can be sustainably managed by precision irrigation using various automated sensors which comprises water application to the crop at the right time, right amount, right place and right manner. It utilizes a systems approach to achieve 'differential irrigation' treatment of field variation (spatial and temporal) as opposite to the 'uniform irrigation' treatment that underlies traditional management systems. The precision irrigation water management system utilizes the components like drip irrigation, GPS (Global Positioning System) and GIS (Geographic Information System) technologies, VRI (variable rate of irrigation) and monitoring and automation. These technologies aid in better control and management for irrigation purposes.