Diagnóstico e mapeamento de áreas de alagamentos em bairros na cidade de Formosa do Rio Preto - BA

Abstract

With the growth of cities, innumerable environmental, rural and agricultural areas are incorporated into the urban network, revealing the transformations of space without ideological planning guided by the bias of social justice and environmental preservation. Due to lack of planning and irregular occupation, the present study aimed to analyze two neighborhoods affected by floods: Progresso and part neighborhood Projeto of the district Formosa do Rio Preto (BA), which presented problems of urban structure, especially in rainy periods, Causing serious inconvenience and material damage to the resident population. The methodologies used were a bibliographic review, a field visit in the districts affected by flooding, a photographic survey provided by the city council and the use of digital images, using the free QGIS software for mapping, thus contributing to the mapping of environmental risk areas of the city, specifically on flooding and to warn about the damage caused by this event. The objective of the research is to diagnose and map flooded areas in the urban area using Geoinformation Technologies and provide a tool for municipal public management and alert the population about the risks of construction in inappropriate areas. By analyzing the maps and photographic data, it is observed that the neighborhoods are located in areas of low slope, favoring flooding in times of intense rainfall, with insufficient drainage in these neighborhoods and the accumulation of solid waste in the pipes.