Next Article in Journal
Paving the Way for A Sustainable and Efficient SiO2/TiO2 Photocatalytic Composite
Previous Article in Journal
Assessment of Remote Sensing Data to Model PM10 Estimation in Cities with a Low Number of Air Quality Stations: A Case of Study in Quito, Ecuador
Previous Article in Special Issue
Potential Impacts to Wetlands and Water Bodies Due to Mineral Exploration, Pebble Copper-Gold Prospect, Southwest Alaska
Open AccessArticle

An Open Source GIS-Based Application for the Assessment of Groundwater Vulnerability to Pollution

Department of Geosciences, Environment and Land Planning, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
Earth Sciences Institute (ICT), Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
Author to whom correspondence should be addressed.
Environments 2019, 6(7), 86;
Received: 27 June 2019 / Revised: 15 July 2019 / Accepted: 19 July 2019 / Published: 21 July 2019
(This article belongs to the Special Issue Groundwater Quality and Groundwater Vulnerability Assessment)
Groundwater is a crucial natural resource for regular socio-economic function. Groundwater vulnerability to pollution can be assessed through Geographical Information System (GIS)-based qualitative methods. GIS-based tools, dedicated to the assessment of groundwater vulnerability, usually present several limitations, such as high cost, unavailable code, and a lack of functionality concerning the flexible application of vulnerability indices and vulnerability map comparison. The objective of this work was to create a new GIS-based open source application for groundwater vulnerability assessment, GVTool, developed using QGIS software, with the capability of creating and comparing groundwater vulnerability maps considering four different methods: DRASTIC, GOD, SINTACS, and Susceptibility Index (SI). This application incorporates features from a previous tool, DRASTIC Model, and new functionalities were included, namely three additional vulnerability assessment methods, map comparative analysis, map statistics, and index interval reclassification and symbology definition. The GVTool functionalities and capabilities are illustrated through a groundwater vulnerability assessment in Serra da Estrela mountain (Central Portugal). GVTool is mostly useful in integrated assessments, helping to verify if the groundwater vulnerability maps are accurate and to decide which is the most suitable method or the combination of methods to express groundwater vulnerability to pollution in a specific area. View Full-Text
Keywords: QGIS; water resources; vulnerability index QGIS; water resources; vulnerability index
Show Figures

Figure 1

MDPI and ACS Style

Duarte, L.; Espinha Marques, J.; Teodoro, A.C. An Open Source GIS-Based Application for the Assessment of Groundwater Vulnerability to Pollution. Environments 2019, 6, 86.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop