These data consist of thematic Causal Loop Diagrams (CLDs) and an integrated Fuzzy Cognitive Maps (FCMs) for the Belgian Coastal Zone based on sector workshops organised from Sep-Dec 2018 and combined multi-actor workshop organised in May 2019. The CLDs and FCMs are based on polished mind maps and stored in VenSim format as this software was used in the workshops. A free learning edition of VenSim (PLE) is available throughhttps://vensim.com/free-download/ Related project deliverables available throughhttps://h2020-coastal.eu/resources Related scientific publication:▪ Tiller R.G., Destouni G., Golumbeanu M., Kalantari Z., Kastanidi E., Lazar L., Lescot J.-M., Maneas G., Martínez-López J., Notebaert B., Seifollahi-Aghmiuni S., Timofte F., De Vente J., Françoise V. and De Kok J.L. Understanding Stakeholder Synergies Through System Dynamics: Integrating Multi-Sectoral Stakeholder Narratives Into Quantitative Environmental Models. Front. Sust. 2:1-12 (2021). https://doi.org/10.3389/frsus.2021.701180.