 Urban development increases flood risk in cities due to local changes in hydrological and hydro-mediological conditions that increase flood hazard, as well as to urban concentrations that increase vulnerability. The relationship between the increasing urban runoff and flooding due to increased imperviousness is better perceived than that between the cyclic impact of urban growth and the urban rainfall via microclimatic changes. A set of model simulations were used to construct future scenarios for Kendo, a third world city in Vietnam, combining climate change-driven sea level rise, an expected increase of river runoff due to climate change, increased urban runoff driven by imperviousness, and enhancement of extreme rainfall due to urban growth-driven microclimatic changes. The results show that under the combined scenario of significant change in river level and business as usual urbanization, the flooding of Kendo could increase significantly. Detailed research on adaptation is necessary for future investments to be effective. This article was authored by H. T. L. Hong and Apatharana. We are article.tv, links in the description below.