Analysis of Favorability for Groundwater Exploration in Coastal Aquifer, Maranhão State

Published
2020-05-29
DOI: https://doi.org/10.14295/ras.v34i2.29792
Keywords: Groundwater exploitation. Lithology and specific capacity. Exploração das águas subterrâneas. Litologia e capacidade específica

    Authors

  • Caetano Pontes Costanzo WALM
  • Alexandre Campane Vidal UNICAMP

Abstract

Favorability analysis has been applied as a method to reduce the exploration risk in groundwater exploration due, mainly, to the characteristics of reservoir rock in coastal aquifer. The research has been elaborated with well hydraulics data and lithology from wells located near the city of São Luís / MA. The target area was chosen because of the geological complexity and proximity to the sea, which leads to a low predictability in hydrodynamic behavior before drilling projects. Areas with specific capacity values above 1.0 m3/h/m were considered productive. The results limited three areas (north, east-center and south-west) with higher exploitation potentials due to the available data. In addition, the highest contrast value found in the research (4.98) was associated with the variable percentage of sandstones, which demonstrates that this variable is an important factor for the exploratory potential of the aquifer in this area

How to Cite
Costanzo, C. P., & Vidal, A. C. (2020). Analysis of Favorability for Groundwater Exploration in Coastal Aquifer, Maranhão State. Águas Subterrâneas, 34(2), 177–190. https://doi.org/10.14295/ras.v34i2.29792