International audienceNowadays the continuous development of Spatial Data Infrastructures provides a favorable context for environmental management. But in fact, the real contribution of SDIs depends on the answers they provide to their users. To the best of our knowledge, few studies have addressed SDI uses at large. The research presented in this paper introduces a novel methodological approach for the study of SDI uses within the context of Integrated Coastal Zone Management (ICZM) in France. We develop a two-tier approach that combines a structural and data flow modeling analysis based on Social Network Analysis (SNA) and Data Flow Diagrams (DFD) applied to an online questionnaire and semi-structured interviews. The results reveal a mul...