Water is of great value and limited resource. It is essential for plants, animals and human beings to live. If there is no enough water they will finally die from dehydration. Water is the most important input in agriculture and has a significant contribution in providing stability to food grain production and self-sufficiency.
The anticipated climate change in the 21st century will have pronounced negative impact on overall water availability and its quantity. Major adverse effects will cause decrease in rainfall. Also, climate change is responsible for occurrence for more frequent droughts, decrease in river flows and reduction in ground water recharge.