Influence of Drainage Network and Compensatory Techniques on Urban Flooding Susceptibility

Abstract

The occurrence of urban flooding due to the accelerated urbanization process and resulting drainage problems has become a worldwide issue and has been the subject of several studies in recent decades. In this sense, the goal of this study is to assess the influence of the drainage network associated with compensatory techniques on susceptibility of the urban flooding occurrence in Campeche District (Florianópolis – Brazil). To achieve this goal, the following methodological steps were used: (1) data collection and preparation; (2) application of the AHP method and consistency analysis; and (3) overlapping influence parameters considering two scenarios. The results show that the introduction of a drainage system decrease the degree of susceptibility of the urban flooding occurrence in approximately 27% of the areas of the Campeche District. It should be noted that, although costly, interventions for implementation of a drainage infrastructure associated with compensatory techniques make is extremely important for sustainable development.