From February 27, 2023, to March 13, 2023, Syrine Ghannem, member of the AGREEMAR project at the Polytechnic University of Valencia visited the National Agronomic Institute of Tunisia in order to carry out a stay within the scope of work package 3 of the AGREEMAR project. During this stay, she visited different Tunisian institutions in order to better understand the components of the Chiba basin and to gather the necessary data for the elaboration of a model of the basin in the AQUATOOL Decision Support System. This model will be used to simulate different management strategies, and to support the water governance related to aquifer recharge.