The symposium will be held at the IAEA’s headquarter in Vienna, Austria, from 11 to 15 May 2015.

The IAEA has convened quadrennial on isotope hydrology since 1963 and this is the 14^th symposium in the series. The symposium will aim to facilitate the exchange of information and knowledge among water and environment professionals from developed and developing countries.

The objectives of the symposium are to:

a. Review and revisit the foundational principles of isotope hydrology in the light of the current state of knowledge;

b. Review recent development in analytical instrumentation and applications of isotope in water and climate studies;