In this context, the scientific issues addressed in this thesis are:
- to better understand the behavior of farmers in terms of individual management of volumetric water quotas,
- to highlight the factors explaining the diversity of behavior between farmers, and
- to qualify the criteria on which irrigators base their choice among different rules of sharing (equity, social justice, history, ease of control, etc.)
in order to be able to include these elements in an integrated modeling of the agro-hydro-social system including the parameters explaining its spatial variability (between irrigators), and to allow stakeholders to choose the distribution modality that satisfy the better their different goals.