Preventing Groundwater Pollution Using Vulnerability and Risk Mapping: The Case of the Florina Basin, NW Greece

Voudouris, K.; Mandrali, Paschalia; Kazakis, Nerantzis

doi:10.3390/geosciences8040129

Cited by 13 publications

(12 citation statements)

References 31 publications

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“…For the application of LOSN-P in the Florina basin, all the information has been obtained from previous studies [44]. The OM in the basin ranges from a minimum of 1.0% to a maximum of 4.0% with the highest values localized in the center of the basin, while to the North and to the South the soils suffer for a lack of OM content.…”

Section: The Greek Study Areasmentioning

confidence: 99%

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The Importance of Incorporating Denitrification in the Assessment of Groundwater Vulnerability

et al. 2020

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Human activities are deeply connected with groundwater reservoirs, so protecting them from pollution has become a priority in many regions of the world. Nitrate is considered the main groundwater pollutant since it is directly linked to many human activities. Agricultural activities and domestic wastewater have been identified as the main sources of nitrate in groundwater. Nevertheless, there are some natural processes that can mitigate nitrate pollution. Together with dilution processes, the degradation of nitrate through denitrification has been acknowledge as a process that can potentially reduce nitrogen loads, in both deep and shallow aquifers. Usually these processes were not properly quantified in vulnerability assessment methods, until the introduction of LOS indices. In this study, the application of the LOS indices on 4 agricultural areas is discussed, highlighting how the LOS indices can identify portions of the landscape with higher potential denitrification and how they directly enhance the groundwater vulnerability assessment. Previous studies have shown that LOS indices are a valuable tool for proper vulnerability assessment to nitrate, however they need to be coupled with other parameters that also describe nitrate behavior in groundwater. The SINTACS-SVN and DRASTIC-PA methods that include the LOS indices, were applied for the first time in the Epanomi coastal area to evaluate the reliably of the assessment and, despite the different classes range and the weights applied, similar groundwater vulnerability assessment maps were obtained. The nitrate vulnerability maps were comparable with the observed nitrate concentrations and were found to be highly comparable with original LOS maps. Nevertheless, it should be kept in mind that vulnerability methods are only screening tools and groundwater quality observations are pivotal information for environmental management.

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Section: The Greek Study Areasmentioning

confidence: 99%

“…For the application of LOSN-P in the Florina basin, all the information has been obtained from previous studies [44]. The OM in the basin ranges from a minimum of 1.0% to a maximum of 4.…”

Section: The Greek Study Areasmentioning

confidence: 99%

The Importance of Incorporating Denitrification in the Assessment of Groundwater Vulnerability

et al. 2020

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“…Thorough understanding of the geological and hydrogeological regime is the first step required to assess groundwater vulnerability and pollution risk of the Krania-Elassona system. According to the literature, various vulnerability methods have been applied to assess karst aquifers in Greece [37], including the COP methods applied to the Ziria system of Peloponnesus [38], the PaPRIKa method applied to the Palaiokastro-Chochlakies system on the island of Crete [39], and EPIK in Anthemountas basin [40]. However, in our opinion, statistical analysis and simulation of a karst system should precede groundwater vulnerability assessment.…”

Section: Research Challengesmentioning

confidence: 99%

Enhanced Characterization of the Krania–Elassona Structure and Functioning Allogenic Karst Aquifer in Central Greece

Manakos¹,

Ntona

Kazakis

et al. 2018

Geosciences

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The present study highlights the importance of geological, hydrogeological, and hydrogeochemical characterization of a karst aquifer in building a conceptual model of the system. The karst system of Krania–Elassona in central Greece was chosen for this application. Hydrogeological research included geological mapping and hydrogeological analysis. Additionally, hydrochemical analysis of water samples was performed in boreholes, rivers, and the system’s main spring. The Krania–Elassona aquifer consists of three horizons of marbles and is characterized by mature karstification. The karst aquifer is characterized by allogenic recharge mainly from the River Deskatis that accounts for up to 92% of the total flow. Groundwater and spring water are generally characterized as good quality and are suitable for irrigation and domestic use. The water type of the spring water is classified as Mg-HCO3. The application of a SARIMA (Seasonal Autoregressive Integrated Moving Average Model) model verified the conceptual model and successfully simulated spring discharge for a two-year period. The results of this study highlight the importance of basic hydrogeological research and the initial conceptualization of karst systems in reliably assessing groundwater vulnerability and modeling.

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“…In fact, the method of groundwater vulnerability estimation, as European (Voudouris, 2018) and nation-al experience has shown (Koshljakov, 2014;Levonjuk, 2018), is limited to two possible approaches:…”

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confidence: 99%

Assessment of environmental risk of groundwater quality deterioration within Siversky Donets river basin

Ulytsky¹,

Yermakov²,

Lunova³

et al. 2019

Journ. Geol., Geogr., and Geoec..

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An adaptation of the national water resources management system in accordance with the requirements of European legislation creates the legislative basis for reforms im- plementation in the field of monitoring and water use. The basin management principle started to be applied, according to which surface and groundwater arrays are the water resources management units. The preliminary groundwater array status assessment (both quantitative and qualitative) is a necessary procedure that enforces the development of appropriate monitoring program and measures elaboration in order to improve groundwater ecological status. This study tested a methodology of groundwater deterioration risk assessment as a tool for previous groundwater array cological status estimation. The research provides an approbation of the methodology in relation to groundwater arrays identified and delineated within Siversky Donets river basin (that covers Kharkiv, Donetsk and Lugansk regions). Surface water and groundwater are affected by significant anthropogenic pressures in form of pollution from point sources of heavy industry facilities. A risk model comprises groundwater vulnerability map and simulated model of anthropogenic pressure magnitude distribution reflecting the impact extent of the main sources of groundwater pollution. Vulnerability map was developed using the tool of input factors weight index estimation. Authors considered the following factors as determining – soils characteristic, aeration zone characteristics, geological environment of groundwater arrays of Cenozoic-Mesozoic group. The pollution load index was calculated. Input data for calculation are concentrations of hazardous substances (metals, semimetals, halogens and nitrates and phenol compounds) measured in groundwater samples during the 2017 monitoring year period. The results of the value interpolation of calculated pollution load index reproduce the focal (point) nature of groundwater pollution and indicates the significant groundwater pollution of Quaternary and Upper Cretaceous, both Carboniferous aquifers and corresponding groundwater arrays. A logical matrix is created on the basis of a combination of pres- sure magnitudes and vulnerability classes. The area of each class of risk is calculated within groundwater arrays with zonal statistic technique. Consequently, each groundwater array is assigned with preliminary estimated risk category. Created model enables to per- form previous groundwater array status assessment. The proposed model expected to be more useful after the data on pollution from diffuse sources obtaining and its validation after the first stage of surveillance monitoring realization.

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Preventing Groundwater Pollution Using Vulnerability and Risk Mapping: The Case of the Florina Basin, NW Greece

Cited by 13 publications

References 31 publications

The Importance of Incorporating Denitrification in the Assessment of Groundwater Vulnerability

The Importance of Incorporating Denitrification in the Assessment of Groundwater Vulnerability

Enhanced Characterization of the Krania–Elassona Structure and Functioning Allogenic Karst Aquifer in Central Greece

Assessment of environmental risk of groundwater quality deterioration within Siversky Donets river basin

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