VULNERABILITY ANALYSIS OF AREAS IN WATER BASIN OF PEDRAS / PITUAÇU THROUGH GIS

Abstract

DOI: http://dx.doi.org/10.12957/geouerj.2014.8052

Urban spaces present shortcomings in the planning and control of land use that has created or enhanced areas of water vulnerability as those subject to flooding . The aim of this study was to analyze and map these areas through data referring to the news released by flooding the newspaper A Tarde and data obtained from the Civil Defense (Codesal ) . Through the GIS they were associated with the MDT , the slope and waterproofing the area. For applying the proposed method , we adopted the watershed Pedras / Pituaçu located in Salvador in Bahia state . The results indicated that there is no coincidence between the sites with occurrences of flooding identified by data from The Evening and Codesal , and that the form of records of occurrences of the latter body is short of the requirements for performing spatial analysis and identification of areas that need intervention . Through this indication could be pointed to as a factor relevant spatial information for planning and management in the areas of water vulnerability.