Billion people demand water from resources that the changing climate is making more and more difficult to harness. Water scarcity and shortage are increasingly common and conditions are becoming more extreme. Factors such as population growth, climate change and rainfall variability, land use changes, water pollution institutional arrangements, and water demand for food use changes, water pollution institutional arrangements, and water demand for food production, affect future water availability and security, and water demand for food production, affect future water availability and security. and This issue on importance of water management, sources of irrigation, water methods of irrigation, modern methods of irrigation and drainage. Similar studies related to political and socio-economic challenges and constraints agricultural and water management, surface and groundwater irrigations.
