Vulnerabilidade e cartografia do Aquifero Itapecuru, no núcleo Cidade Nova, de Marabá / Pará com o uso de geotecnologias

Abstract

The aim of this present study was to evaluate the natural vulnerability of the Itapecuru aquifer in Cidade Nova district, located in Marabá city. Having as support to achieve this goal, a cartographic basis of hydrodynamic parameters of tubular wells studied was generated, using as a tool GIS. The methodology used for mapping was the GOD model, with existing data was employed the use of geotechnology for the elaboration of maps. From the cartographic point of view, maps were developed such as flow, the variation of depth, the static level, potentiometric, vulnerability and the potential sources of contamination. In relation to the potential sources of contamination were found three of them that include six fuel stations, a cemetery, and in situ sanitation of the residences located in the district. The vulnerability in the area ranges from low to high, however recent studies have identified contamination by fecal coliforms, bacteria and nitrogen compounds. In the region there is no basic sanitation, and despite being a great risk of contamination, the exploited waters of this aquifer are mainly used for human consumption. Therefore, study of this genre are essential, and contributes to decision-making related to protection of groundwater resources in aspects of quality, occupation planning and land use.