Uso de geoprocessamento para mapeamento de vulnerabilidade como instrumento de gestão de águas subterrâneas em Aparecida de Goiânia/GO
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2010-09-03
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Universidade Federal de Goiás
Resumo
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.
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Citação
NOGUEIRA, Annyella Kássia. Use of geoprocessing for vulnerability mapping
as a management tool of groundwater in Aparecida de Goiânia/GO. 2010. 135 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Goiás, Goiânia, 2010.