PREVISÃO E MAPEAMENTO DA ÁREA URBANA INUNDÁVEL NA CIDADE DE LAJEADO - RS - BRASIL

Abstract

The study of extreme events, as floods, it’sindispensable, mainly in urban areas, due to amount of lives,sanitation, material goods and infrastructures involved inthe process. The Lajeado city, located at center of RioGrande do Sul state, Brazil, historically and in a periodicway, is reached by inundations decurrently of TaquariRiver’s floods. This paper aims to forecast floods events andmapping the urban areas reached by floods in the city. Themathematical modelling, geotechnologies and the spatialanalysis by Remote Sensing revealed up trustworthy tosimulation and to mapping the areas reached by floods. Theresults obtained contribute, in short term, to establish anefficient plan to removal and to relocation the populationreached by the floods. In medium and long term, the resultsserve to readapt the land use and land covering, in functionof the flood risk.

Index Terms - urban floods, mathematical modelling, forecast system, Geoprocessing.