integrative groundwater studies in a small-scale urban area: case study from the municipality of penafiel (nw portugal)

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ID: 138930
2020
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Abstract
The occurrence of groundwater in urban hard rock areas is mostly controlled by secondary permeability caused by the fracturing degree and weathering grade. Vulnerability GIS-mapping, monitoring, and infiltration/recharge of water resources, and the delineation of the environmental protective background are key issues in evaluating, planning, managing, and decision-making for urban water systems. A small-scale urban area in Penafiel City was used as a case study. Historical and current scenarios were compared using hydrogeological GIS-based modelling. Water sources and potential contamination sources were mapped around the study area. Groundwater is mainly acidic, with a low mineralization and a Cl-Na to Cl-SO4-Na or Cl-Ca to Cl-SO4-Ca hydrogeochemical facies. Considering potential contamination sources, the moderate and the moderate-high classes dominate the area. The combined approach of the vulnerability indexes suggests that most of the area has a low to moderate vulnerability to contamination. The Infiltration Potential Index in urban areas (IPI-urban) indicates the prevalence of a low to moderate infiltration. Groundwater recharge evaluation indicates values < 2.3 mm/year and <60 mm/year for summer and winter scenarios, respectively. Finally, the investigation addresses insights for decision-makers for the appropriate planning and sustainable management of groundwater resources in small-scale urban areas.
Reference Key
freitas2020geosciencesintegrative Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Liliana Freitas;Helder I. Chaminé;Maria José Afonso;Helen Meerkhan;Tiago Abreu;José Filinto Trigo;Alcides J. S. C. Pereira
Journal Journal of biochemical and molecular toxicology
Year 2020
DOI
10.3390/geosciences10020054
URL
https://www.mdpi.com/2076-3263/10/2/54
Keywords
vulnerability hydraulics urban groundwater

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