Evaluation of natural vulnerability to contamination of Serra Geral aquifer system In Paraná – Brazil

Published
2017-10-09
DOI: https://doi.org/10.14295/ras.v31i4.28857
Keywords: Vulnerability. DRASTIC. GOD. Serra Geral Aquifer System. Vulnerabilidade. DRASTIC. GOD. Sistema Aquífero Serra Geral.

    Authors

  • Vinícius Menezes Borges Universidade Federal do Rio Grande do Sul
  • Gustavo Barbosa Athayde Universidade Federal do Rio Grande do Sul
  • Pedro Antônio Roehe Reginato Universidade Federal do Rio Grande do Sul

Abstract

Groundwater is an important source for human supply, however, it is more and more exposed to contamination due to urbanization, industrial and agricultural expansion. This paper presents a study in regional scale about the natural vulnerability of groundwater in the Serra Geral Aquifer System in Paraná. DRASTIC and GOD methods with adaptations for fractured aquifers were used and compared through normalization of vulnerability values. The map obtained by DRASTIC method presented the following levels of vulnerability: low (5,01%), moderate (83,13%) and high (11,85%). GOD method presented low (66,21%), moderate (0,67%), high (14,32%) and extreme (18,81) vulnerability. DRASTIC method presented better spatial detail and more intermediate values, while GOD showed abrupt due to the simple parameterization. Although the DRASTIC method presented better results, the choice for a method must be conditioned to the data, human and financial availability.

How to Cite
Borges, V. M., Athayde, G. B., & Reginato, P. A. R. (2017). Evaluation of natural vulnerability to contamination of Serra Geral aquifer system In Paraná – Brazil. Águas Subterrâneas, 31(4), 327–337. https://doi.org/10.14295/ras.v31i4.28857