Human-induced climate change has far reaching and complex impacts on water resources throughout the world. Such impacts through water are cross-sectoral, and are felt across inherently linked sectors of agriculture, energy, ecosystems, and human health. Future climate change or change in climate parameters, such as temperature, precipitation, humidity, evapotranspiration, etc., is said to result in an increase in vulnerability of society and the environment in its capacity to adapt to such a change. Observations by National Communications (NATCOM, 2004) state that a rise in temperature has already been observed in the Indian subcontinent.