Journal of Neutrosophic and Fuzzy Systems JNFS 2771-6449 2771-6430 10.54216/JNFS https://www.americaspg.com/journals/show/1507 2021 2021 Applied College, Jazan University, Jazan, Kingdom of Saudi Arabia Abdullah Ali Salamai The terrible consequences that floods are having on human life and property can be seen all around the globe. The flood risks management problem is subject to uncertain and imprecise data, and it is influenced by several different factors. As a result, the assessment procedure in question might be seen as an instance of a challenging uncertain multi-criteria decision-making (MCDM) issue. Within the context of single-valued neutrosophic sets (SVNSs), this research aims to present a novel integrated methodology that is based on the Combined Compromise Solution (CoCoSo) technique under a neutrosophic environment. Both the decision-makers and the weights of the criteria are completely unknown. The average technique is used in the proposed methodology to calculate the weighting of the criteria, and an updated version of the CoCoSo method is used within the context of the SVN to decide which option is the most appropriate. In addition, an example case study of flood risk management is explored to highlight the entire execution process of the suggested technique. In addition, a comparison with other approaches that already exist is described to evaluate the validity of the results that were achieved. 2023 2023 38 50 10.54216/JNFS.050204 https://www.americaspg.com/articleinfo/24/show/1507