Assessing the Effects of Climate Change on Compound Flooding in Coastal River Areas Bermúdez Pita, María Compound floods Coastal river areas Climate change Flood hazard Future projections M. Bermudez acknowledges funding from EU's Horizon 2020 Programme under Marie Skodowska-Curie Grant Agreement 754446 and UGR Research and Knowledge Transfer Fund-Athenea3i. Funding for open access charge: Universidad de Granada/CBUA. Flood assessment in coastal river areas is subject to complex dependencies and interactions between flood drivers. In addition, coastal areas are especially vulnerable to climate change, and thus its effects should be considered in the evaluation of future flood hazard. In the present study, we propose a methodology for a robust evaluation of historical and future flooding in coastal river areas. It follows a continuous simulation approach in which a hydrologic-hydraulic modeling cascade is run for several years, driven by a simultaneous series of flood drivers. The method differs from other existing methodologies in: (a) jointly considering the relevant flood drivers, both coastal and inland, together with their dependencies and interactions, to represent the simultaneous occurrence of extreme water levels correctly, and (b) obtaining local-scale physically consistent projections of flood drivers to account for future climate change effects on compound flood hazard. The methodology is tested for a coastal river reach in NW Spain. The results show that, although mean sea level rise is usually expected to be the main driver of increased flood hazard, climate change effects on river discharge can play a very significant role in regions with compound flooding potential. 2021-11-16T07:25:11Z 2021-11-16T07:25:11Z 2021-10 journal article Bermúdez, M... [et al.] (2021). Assessing the effects of climate change on compound flooding in coastal river areas. Water Resources Research, 57, e2020WR029321. [https://doi.org/10.1029/2020WR029321] http://hdl.handle.net/10481/71528 10.1029/2020WR029321 eng info:eu-repo/grantAgreement/EC/H2020/754446 http://creativecommons.org/licenses/by-nc-nd/3.0/es/ open access Atribución-NoComercial-SinDerivadas 3.0 España Wiley-Blackwell Publishing