Professor Hayet Chihi graduated from UPMC-Sorbonne Universités conjointly with French Institute of Petroleum – “IFP Energies Nouvelles”. She has been in charge of several collaborative research projects dealing with geostatistical modelling of geological objects and environmental issues. She focused her activities on, water and petroleum, reservoir systems characterization constrained by geological heterogeneities and multi-source data. Her research interests include also integration of multi-scale geomodels with hydrogeochemical process, for a complete understanding of the hydraulic connectivity spatial distribution, needed for dynamic modelling. She is involved in some new applications on mining geostatistics. She has been teaching geostatistics, reservoir characterization and modelling for many years in several Tunisian engineering schools and faculties. She is a founding member and head of “Association Tunisienne de Georesources” (ATGr), a board member of “Association Tunisienne des Femmes Géoscientifiques” (Tu-AWG), a member of the International Association for Mathematical Geosciences (IAMG) and member of “Association des Tunisiens des Grandes Ecoles (ATUGE). Her research interests include hydrology, rainfall-runoff modeling in water-scarce regions, and the impacts of climate change and rainfall variability on water resources (particularly in semi-arid areas).