Water is one of the vital components of life. The rapid pace of irrigation growth, urbanization & industrialization has put enormous stress on water resources. Cumulative impact of increase in use of this precious natural resource has led to water scarcity in many regions of the country. Nevertheless, the climate change has also resulted in change in hydrologic cycle in the country. Hence, it is necessary that this scarce resource is protected by effective and efficient management on sound scientific methodology for its sustainable development.