Hydrogeology and vulnerability map (Epik method) of the “Supramonte” karstic system, north-central Sardinia

Barrocu, Giovanni; Muzzu, Michele; Uras, Gabriele

doi:10.1007/s00254-006-0382-2

Cited by 10 publications

(5 citation statements)

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“…As resulting from the literature overview in this work, tracer tests or more physically based approaches were used by various authors [23,26] in order to validate the results of the vulnerability assessment with the EPIK method. In addition, the application and results of the EPIK method were compared to other methods which were applied in the same test site [8,10,[23][24][25]27,55,56]. However, in this case study, tracer tests have been used in order to determine certain parameters, but could not be implemented for results validation due to the location of the Perivleptos aquifer and its proximity to the boreholes of the water bottling company [38].…”

Section: Discussionmentioning

confidence: 99%

Groundwater Vulnerability and Risk Assessment in A Karst Aquifer of Greece Using EPIK Method

et al. 2019

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The aim of this study was the assessment of groundwater vulnerability and pollution risk of the Perivleptos karst aquifer in the northwestern part of Greece. Hence, the EPIK method has been applied within the study area. Additionally, a detailed literature overview has been obtained, including the worldwide application of the EPIK method. The hazard map has been developed for the implementation of risk assessment. The resulting vulnerability map was divided into four classes and showed especially high to very high vulnerability. The subsequent hazard assessment has shown mostly low to moderate endangerment for the northern part of the study area, which is mainly covered by forest, while the areas covered by urban and industrial, as well as agricultural land, use primarily show high to very high endangerment. Concluding in the risk map, the study area consists of 13% of very high, 48% of high, 36% of moderate and 4% of low risk of contamination. According to the literature overview, the EPIK method was mostly used in combination with other vulnerability assessment methods, and results have been validated through tracer tests, sensitivity analysis or comparing to other methods. In this study, an additional single parameter sensitivity analysis was obtained for validation of the EPIK parameters.

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Section: Discussionmentioning

confidence: 99%

Groundwater Vulnerability and Risk Assessment in A Karst Aquifer of Greece Using EPIK Method

et al. 2019

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“…The EPIK method, widely applied (Gogu and Dassargues 2000;Vías et al 2005;Neukum and Hötzl 2007;Barrocu et al 2007;Ravbar and Goldscheider 2009), has been integrated in Swiss legislation for karst groundwater protection.…”

Section: Epik Methodsmentioning

confidence: 99%

Karst Aquifers—Characterization and Engineering

Stevanović¹

2015

Professional Practice in Earth Sciences

113

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“…The models' selection criteria focused on choosing models that have been used in similar geologies, with at least one method developed for karstic systems, and those that have a limited set of input data requirements since the study area is characterized with data-scarcity. Precipitation/recharge rate / water balance Barrocu et al 2006;Doerfliger 1996;Doerfliger et al 1999;Gogu et al 2000b;Hamdan et al 2016;Hammouri and El-Naqa 2008;Kazakis et al 2015;Loborec et al 2015;Neukum et al 2008;Pera et al 2009;Polemio et al 2009;Rangel-Medina et al 2004;Ravbar and Goldscheider 2009;SAEFL 1998;Vlaicu et al 2008 d DRASTIC is an intrinsic GVA model that uses IO of seven parameters ( Figure 2) to assess the vulnerability of an aquifer to groundwater contamination. It was developed for the US Environmental Protection Agency (EPA) and is reportedly suitable for porous/granular aquifers at a large scale (Aller et al 1987).…”

Section: Gva Model Selectionmentioning

confidence: 99%

“…is very thin to non-existent and hence it has the lowest weight. All parameters were divided into sub-categories, each with a specific rating ( Figure 3) (Barrocu et al 2006;SAEFL 1998). A Protection Factor (PF) or EPIK Index (EI) is then calculated using Equation 2, where E=Epikarst; P=Protective Cover; I=Infiltration Condition; K=Karst Network, and the numbers on the left of the parameters are the suggested weights (SAEFL 1998).…”

Section: =Dr Dw + Rr Rw + Ar Aw + Sr Sw + Tr Tw + Ir Iw + Cr Cw (1)mentioning

confidence: 99%

Can groundwater vulnerability models assess seawater intrusion?

Momejian

Najm

Alameddine

et al. 2019

Environmental Impact Assessment Review

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This study examines the uncertainty associated with two commonly used GIS-based groundwater vulnerability models, DRASTIC and EPIK, in assessing seawater intrusion, a growing threat along coastal urban areas due to overexploitation of groundwater resources. For this purpose, concentrations of Total Dissolved Solids (TDS) in groundwater samples at three pilot areas along the Eastern Mediterranean were compared with mapped vulnerability predictions obtained through DRASTIC and EPIK. While field measurements demonstrated high levels of groundwater salinity depending on the density of urbanization, both vulnerability assessment methods exhibited a limited ability in capturing saltwater intrusion dynamics. In the three pilot areas, DRASTIC was only able to predict correctly between 8.3 and 55.6 percent of the salinity-based water quality ranges, while EPIK's predictions ranged between 11.7 and 77.8 percent. This emphasizing that conventional vulnerability models perform poorly when anthropogenic impacts induce lateral flow processes such as seawater intrusion caused primarily by vertical groundwater extraction.

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Hydrogeology and vulnerability map (Epik method) of the “Supramonte” karstic system, north-central Sardinia

Cited by 10 publications

References 1 publication

Groundwater Vulnerability and Risk Assessment in A Karst Aquifer of Greece Using EPIK Method

Groundwater Vulnerability and Risk Assessment in A Karst Aquifer of Greece Using EPIK Method

Karst Aquifers—Characterization and Engineering

Can groundwater vulnerability models assess seawater intrusion?

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