Mapeamento do risco de inundação da bacia Pavuna-Meriti, estado do Rio de Janeiro

Abstract

Disasters of the most diverse reach the world, so a deep commitment is needed in its prevention, reduction and management. The flood is one of the events that produce the most shocking disasters, including in Brazil. That is why the risk reduction is importance and needed to be followed. Mapping is a strategic tool for decision-making in risk reduction because it is a simple, easy-to-understand and easy to build. Based on the Scaling Method for Priorities in Hierarchical and free software (QGIS), this work is dedicated to the case study of the Pavuna-Meriti basin, aiming to provide subsidies for reducing the risk of flood-related disasters in regions with low data and information. It is a basin of great relevance to the State because it comprises four important municipalities of the Rio de Janeiro Metropolitan Region - Rio de Janeiro, Duque de Caxias, São João de Meriti and Nilópolis -, receive main roads and be densely occupied. Their natural tendency to flood is due to their physical characteristics of low and abrupt difference of slope, variables selected in this research to evaluate the area risk. Thus, the work, after extensive research, collects data on the basin, compiles the information and, through the creation of a flood risk map, provides a tool for the risk management of the Pavuna-Meriti basin.