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. We investigate the role of morphodynamic changes in the floodingof a micro-tidal dissipative beach for both current and sea level risescenarios. By considering beach morphodynamics and flood processesassociated with highly energetic waves, the study allows one to evaluate threatsto coastal zones. Coupling of SWAN and XBeach models is employed topropagate offshore wave conditions to the swash zone, estimatingmorphological changes and flooding associated with wave conditions during coldfronts and hurricanes that affected Cartagena de Indias (Colombia). Thenumerical models were calibrated from previous research in the study area.The results indicate that numerical modeling of flooding on microtidaldissipative beaches under extreme wave conditions should be approached byconsidering beach morphodynamics, because ignoring them can underestimateflooding by ∼ 15 %. Moreover, model results suggest thatbeach erosion and flooding are intensified by sea level rise, resulting inthe most unfavorable condition when extreme events are contemporaneous withhigh tides. In this case, the increase in erosion and flooding is∼ 69 % and ∼ 65 %, respectively, whencompared with the present conditions of sea level.

The role of morphodynamics in predicting coastal flooding from storms on a dissipative beach with sea level rise conditions