Uso de geoprocessamento para mapeamento de vulnerabilidade como instrumento de gestão de águas subterrâneas em Aparecida de Goiânia/GO

• Autor(a) principal: NOGUEIRA, Annyella Kássia
• Data de Publicação: 2010
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/0013000005djr
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tde/607
• topic: Águas subterrâneas; SIG; poços tubulares profundos; vulnerabilidade; método GOD; método DRASTIC adaptado; 1.Águas subterrâneas - Aparecida de Goiânia (GO) 2.Mapeamento de vulnerabilidade; Groundwater; GIS; deep wells; vulnerability; GOD method; DRASTIC adapted method; CNPQ::ENGENHARIAS::ENGENHARIA SANITARIA::RECURSOS HIDRICOS

The research developed sought to contribute to the conservation of groundwater resources, aiming in developing a Geographic Information System (GIS) as a tool to manage the use of groundwater targeting the sustainable use, for public supply in the city of Aparecida de Goiânia/GO. In order to achieve this, a Geographic Information System (GIS) was used for the registration of deep wells, continuing the research with a study of natural vulnerability by mapping the information obtained wich relates the potential sources of contamination. Data collection took place through a consultation with the Information System for Groundwater (SIAGAS) and through the System of Statistics and Geographic Information of the State of Goiás (SIEG). Through the database development it was possible to apply the DRASTIC method adapted by Narciso and Gomes (2005) and GOD method proposed by Foster and Hirata (1988) for mapping vulnerability to contamination of groundwater resources. In order to apply the DRASTIC method adapted, maps were generated for slope, land use, geology, geomorphology, water resources and human occupation. The map resulting from this method shows four classes: low, medium, high and very high, showing that of the 288 square kilometers of this city, almost 80% were classified as having medium vulnerability fir the groundwater quality. For the GOD method, maps of the degree of hydraulic confinement, geology and depth or distance of the groundwater level were generated. The map resulting from this process had only three classes: negligible, low and high, showing that 76% of the area was classified as having a negligible vulnerability. This occurred because this method does not consider human occupation.