Science and Education Publishing American Journal of Water Resources 2333-4819 3 3 2015 07 20 Water Resource Management through Isotope Technology in Changing Climate 86 91 EN Bhavtosh Sharma Uttarakhand Science Education and Research Centre (USERC), Dehradun, India Rakesh Singh Prashant Singh DP Uniyal Rajendra Dobhal AJWR2015333 10.12691/ajwr-3-3-3 2015 06 07 2015 06 19 2015 07 20 The water system plays an indispensable role on the planet earth for the survival of living species as well as for the sustainability of ecosystem. However, numerous factors like population growth, industrial activities, rapid urbanization, depletion of aquifers, climate change, several anthropogenic activities, geogenic activities etc. influence the water system. Therefore, the proper management of water resources has become the need of the time because its management and study will be much helpful to cater the safe water for the increasing population globally. In such direction, isotope technology has been emerged and established as an efficient scientific tool to combat the water related issues like ground water recharge studies, its quality management, surface water studies, salinization and contamination studies etc. The present paper highlights the importance of isotope technology for the management of water resources in changing climatic conditions.