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Journal articles on the topic 'Groundwater vulnerability'
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Blanchard, Allechy Fabrice, Lasm Théophile, Youan Ta Marc, et al. "Cartographie De La Vulnérabilité À La Pollution Des Aquifères Du Socle Précambrien : Cas De La Région D’oumé (Centre-Ouest De La Côte D’ivoire)." European Scientific Journal, ESJ 12, no. 20 (2016): 374. http://dx.doi.org/10.19044/esj.2016.v12n20p374.
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Development of agricultural and mining activities and the rapid growth of the population (3.8%) in Oumé’s area, constitute a potential risk of groundwater’s pollutions. This study interested Oumé’s area and aims to elaborate a map of vulnerability to pollution for a better management of groundwaters. The database is constituted by various data in particular, geological, hydrogeological, geomorphological, pluviometric data and satellite image. Methods DRASTIC and GOD were used in this study. Results of DRASTIC method indicated that 31.86% of study area have a very low vulnerability, 68.12% a low vulnerability and 0.02% a moderate vulnerability. With GOD method, 12.8% of study area have a very low vulnerability, 86.46% a low vulnerability and 0.74% a moderate vulnerability. The chemical analysis of groundwater showed that weaker rates of nitrates (0-14mg/l) registered inside the surely well protected zones. These observations have led to validate some various maps obtained. Result of the test of Kappa revealed that coefficient K is reliable and gave moderate agreement (K=0.43) between both methods. This agreement is confirmed by the surface analysis (79.01%). In this study, the DRASTIC method supplied better results and is thus better adapted for the evaluation of vulnerability in the pollution of groundwater of this area.
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Aribowo, K., W. Wilopo, and D. H. Barianto. "Groundwater vulnerability assessment and mapping in shallow groundwater." IOP Conference Series: Earth and Environmental Science 926, no. 1 (2021): 012047. http://dx.doi.org/10.1088/1755-1315/926/1/012047.
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Abstract The increasing population density can contaminate groundwater. So far, groundwater is still the primary source to fulfill clean water and drinking water in Muntilan, Salam, and Ngluwar Sub-District. Studies on groundwater vulnerability are essential to minimize the contamination risks as a piece of basic information for land use planning. This research aims to assess groundwater vulnerability in Muntilan, Salam, and Ngluwar Sub-District. The simple vertical vulnerability (SVV) method with GIS was selected to develop a groundwater vulnerability map. The parameters of this method consist of the type of soil/rock, the thickness of the water-unsaturated zone, and the recharge value. The results show that the research area can be divided into three vulnerability classes: very low, moderate, and high groundwater vulnerability. Very low groundwater vulnerability has a value of more than 70 with very high protection effectiveness. The class is distributed in Muntilan and Salam Sub-Districts. Moderate groundwater vulnerability has a value less than 35 to 65 with moderate protection effectiveness, and high groundwater vulnerability has a value ranging from 24 to 35 with low protection effectiveness. Both of the class is evenly distributed in Muntilan, Ngluwar and Salam Sub-Districts.
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Bai, Liping, Yeyao Wang, Huina Fang, et al. "Research on the evaluation method of groundwater quantity and pollution vulnerability." Water Supply 13, no. 2 (2013): 368–75. http://dx.doi.org/10.2166/ws.2013.027.
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Current research on groundwater vulnerability is aimed mainly at groundwater pollution vulnerability (GPV), and the vulnerability of groundwater quantity is seldom considered. It is important to carry out the groundwater vulnerability evaluation for the management of groundwater resources. This paper presents evaluation models and methods for assessing groundwater quantity and pollution vulnerability. The models and methods were used to evaluate the groundwater vulnerability in the plain area of Baotou, Inner Mongolia, China. The groundwater quantity vulnerability was assessed by computing the groundwater recharge rate, and the GPV was evaluated by simulating the migration time for pollutants traveling from ground surface to the aquifer. The research results could provide scientific support for the management of regional groundwater resources, prevention and control of groundwater pollution.
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Voudouris, Konstantinos, and Nerantzis Kazakis. "Groundwater Quality and Groundwater Vulnerability Assessment." Environments 8, no. 10 (2021): 100. http://dx.doi.org/10.3390/environments8100100.
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Stevenazzi, Stefania. "Groundwater vulnerability or groundwater pollution risk?" Rendiconti Online della Società Geologica Italiana 41 (November 2016): 84–87. http://dx.doi.org/10.3301/rol.2016.99.
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Li, Bo. "Groundwater Vulnerability Assessment in Karst Areas Based on Analytic Hierarchy Process- A Case Study in Weining County, China." Open Civil Engineering Journal 9, no. 1 (2015): 657–63. http://dx.doi.org/10.2174/1874149501509010657.
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Strong karstlize effect forming surface and underground double-space structure in karst area, what resulting groundwater systems are extremely sensitive to outside interference. This article mainly focuses on the vulnerability assessment of karst groundwater, proposing that the vulnerability assessment of karst groundwater should be considered from three perspectives: the inherent vulnerability of groundwater, the vulnerability of the ecological environment and water resources carrying capacity, and selecting 19 indicators based on it, establishing the index system and evaluation method of groundwater vulnerability assessment in karst area combines with Analytic Hierarchy Process. The article apply the evaluation method to evaluate groundwater vulnerability of typical karst area—Weining county, China. The study can provide certain reference for the groundwater vulnerability assessment in similar karst area.
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Purnama, Ignasius Loyola Setyawan, and Vincentia Anindha Primacintya. "Groundwater vulnerability assessment to pollution in Kasihan, Bantul Regency: A comparative method study (GOD, SINTACS and DRASTIC)." E3S Web of Conferences 200 (2020): 02012. http://dx.doi.org/10.1051/e3sconf/202020002012.
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Groundwater vulnerability to pollution refers to the ease with which pollutants reach groundwater, in other words indicating the level of ease of an area to experience pollution. At present, the theme is one of the themes that attracts many researchers because pollution is more frequent in an area. The purpose of this study is to assess groundwater vulnerability in the study area for pollution using the GOD method and conduct a study of 3 groundwater vulnerability assessments, to determine the most appropriate assessment to be applied in the study area. The method used to determine groundwater vulnerability to pollution is GOD, which uses three parameters to assess the vulnerability of groundwater, namely aquifer type, rock type above aquifer and groundwater level. Furthermore, the results of the vulnerability assessment using the GOD method are compared with the vulnerability assessment according to the SINTACS and DRASTIC methods that have been carried out before in this area. The results showed that the variation of groundwater vulnerability index values in the study area according to the GOD method was from 0.35 to 0.63. Locations that are classified as medium vulnerability are generally located in the limestone Sentolo Formation, while locations that are classified as high vulnerability class are located in the volcanic rock of Yogyakarta Formation. Noting the results of determining groundwater vulnerability from the three methods, it can be said that the three methods are suitable for assessing groundwater vulnerability in the study area. However, looking at the distribution pattern of the level of pollution, the DRASTIC method can provide more detailed results related to the level of vulnerability.
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Nistor, Mărgărit-Mircea. "Groundwater Vulnerability in the Piedmont Region under Climate Change." Atmosphere 11, no. 8 (2020): 779. http://dx.doi.org/10.3390/atmos11080779.
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Groundwater vulnerability has increased in recent decades due to several factors, but mainly due to climate change. In this study, we applied a complex approach to determine groundwater vulnerability at a regional scale in the Piedmont region including high-resolution climate models. Aquifers, terrain model, climate data, land cover, and groundwater monitoring stations data of nitrate (NO3) concentration were the main layers used for the vulnerability and risk mapping. Validation of the groundwater vulnerability map consisted of pixel pair comparison (PPC) using the quality status of a monitored groundwater station, dating from 2005 to 2012. The groundwater vulnerability maps that related to the 1990s and 2020s periods indicated very high and high vulnerability of groundwater in the central and eastern parts of the region, especially in the porous aquifers of Po Plain. The areas with very low and low vulnerability extend into the north and west, mainly in the non-aquiferous media and fissured aquifers. The future scenarios of groundwater vulnerability indicate a consistent increase of the very high vulnerability class, from the 1990s to the 2050s periods, in all scenarios, and mainly in the Po Plain.
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Chandalsouk, Soutsadachan, Doni Prakasa Eka Putra, and Wahyu Wilopo. "Assessment of Groundwater Vulnerability and Total Organic Carbon in the Shallow Groundwater of Wonosari City, Gunung Kidul, Yogyakarta, Indonesia." Journal of Applied Geology 7, no. 1 (2022): 1. http://dx.doi.org/10.22146/jag.68007.
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Wonosari city is the capital of Gunung Kidul regency of Yogyakarta Special Province. The city is located in the karst plateau overlaying a succesion of limestone lithologies. The groundwater on this city is shallow and people used this groundwater as their daily water supply. This study aims to determine the intrinsic groundwater vulnerability and to identify the TOC level in groundwater also to investigate the relationship between groundwater vulnerability and TOC levels in the groundwater. Field observation was conducted on 40 groundwater occurrences (dug wells, bore wells and springs) to investigate the aquifer types, overlying lithology and depth to groundwater. At the same time, 16 groundwater samples were taken from the dug wells and analyse for the TOC content. Secondary data was also collected from previous researches especially the information of sub-surface lithology. Groundwater vulnerability was evaluate by using GOD method and correlation between groundwater vulnerability and TOC in groundwater was analyzed spatially and statistically by using map pverlaying, linear regression and Spearman’s rho test, respectively. The results showed that the groundwater vulnerability in the city is dominated by extreme and high vulnerability, covers about 84 % of study area. The TOC level in the groundwater ranges between 4.532 mg/L to 6.849 mg/L which showing a process of pollution loading may occur. Linear regression and Spearman’s rho value show that the TOC levels and groundwater vulnerability has a moderate positive correlation with r2 value of about 0.324 for linear regression. Despite the moderate correlation, the research prove that the groundwater vulnerability map reveals on this study is good enough to represent the ability of natural condition in protecting the groundwater quality.
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Krogulec, Ewa, Sebastian Zabłocki, and Danuta Zadrożna. "Variability of Intrinsic Groundwater Vulnerability to Pollution in River Valley due to Groundwater Depth and Recharge Changes." Applied Sciences 9, no. 6 (2019): 1133. http://dx.doi.org/10.3390/app9061133.
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Groundwater management can be effectively implemented by assessment of groundwater vulnerability to pollution. The research was carried out in the Vistula River valley (Poland) in an area of shallow groundwater occurrence, defined as a Groundwater-Dependent Ecosystem area. The goal of this study was to identify the average, maximum, and minimum depths of the groundwater table for variant assessment of groundwater vulnerability to contamination. The variants correspond to the average vulnerability, the vulnerability during hydrogeological drought, and the vulnerability during the flood risk period. Theoretical and effective weights of vulnerability parameters were calculated using the DRASTIC method. Vulnerability maps constructed for the various vulnerability variants and by using different parameter weights show the spatial variability of the individual vulnerability classes. Due to the specifics of this protected area, the expected dependency between vulnerability index and chloride concentrations in the monitoring points was not found. Comparison showed strong dependency of water chemistry and the value of recharge, lithology of aquifer, and unsaturated zone. The research results confirm the need for variant vulnerability assessment to protect against floods or predict the effects of climate change.
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Duarte, Lia, Jorge Espinha Marques, and Ana Cláudia Teodoro. "An Open Source GIS-Based Application for the Assessment of Groundwater Vulnerability to Pollution." Environments 6, no. 7 (2019): 86. http://dx.doi.org/10.3390/environments6070086.
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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.
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Larva, Ozren, Željka Brkić, and Tamara Marković. "Vulnerability and Risk of Contamination of the Varaždin Aquifer System, NW Croatia." Sustainability 15, no. 23 (2023): 16502. http://dx.doi.org/10.3390/su152316502.
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This paper presents the first study that assesses the vulnerability and risk of contamination of groundwater in the Varaždin aquifer system. The alluvial aquifer system is mostly unconfined with favorable hydrogeological features. Out of three wellfields, two still operate at full capacity, while the Varaždin wellfield, once the major source of drinking water, has been abandoned due to high concentrations of nitrates in the groundwater. Index-based methods are employed to assess groundwater vulnerability—two DRASTIC-based methods, standard and P-DRASTIC; two SINTACS-based methods, with normal and severe weighting strings; and the GOD method. Hazard is evaluated according to recommendations from the EU COST 620 action, while the risk intensity of the resource is calculated using the results of vulnerability and hazard assessments. The results reveal that for all vulnerability models, the resulting maps have a similar distribution pattern of vulnerability classes, with the high vulnerability class prevailing. However, notwithstanding the generally high groundwater vulnerability, a moderate resource contamination risk prevails as a consequence of a dominantly low hazard index. The validation of the groundwater vulnerability models demonstrates a weak correlation between the vulnerability indices and mean nitrate concentrations in groundwater. Conversely, a significantly higher correlation coefficient (0.58) is obtained when the groundwater vulnerability index is replaced by the resource risk intensity index, indicating that the results of resource risk intensity assessments are superior to groundwater vulnerability results in predicting the level of groundwater contamination.
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Ducci, D., and M. Lasagna. "Groundwater stress and vulnerability." Sustainable Water Resources Management 5, no. 4 (2019): 1379–80. http://dx.doi.org/10.1007/s40899-019-00356-9.
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Kintoro, Fachrurizal Sai, Tjahyo Nugroho Adji, and Margaretha Widyastuti. "Land use changes and their impact on groundwater vulnerability's spatio-temporal conditions." Journal of Degraded and Mining Lands Management 12, no. 2 (2025): 6979–90. https://doi.org/10.15243/jdmlm.2025.122.6979.
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Bantul Regency, located on Java Island, is one of the areas in Indonesia with abundant groundwater sources, thus experiencing rapid urban growth. The hazard of groundwater vulnerability in this area has increased due to urban expansion that coevals with changes in land use and human population growth. The objective of this study was to analyze how groundwater vulnerability has changed due to land use conditions and what impact those changes have had. Because of the various variables associated with urban growth, the sub-districts of Bantul and Bambanglipuro were explicitly chosen as research areas. This study compared groundwater vulnerability and land use between 2009 and 2021 in a spatiotemporal manner. The vulnerability determination method used is the Susceptibility Index (SI), which consists of the parameters depth of groundwater table, groundwater recharge, aquifer media, topography, and land use. Each parameter is processed into an index of groundwater vulnerability by scoring and weighting methods. Techniques for descriptive comparative analysis are employed to ascertain how changes in land use will affect the degree of groundwater vulnerability. The results of the land use classification show that the agroforestry area has decreased while the semi-urban area has increased in 2009 and 2021. The sub-district of Bambanglipuro underwent numerous changes. On the other hand, it is known that medium and high vulnerability levels dominate groundwater vulnerability. In this instance, it is concluded that variations in land use have impacted how groundwater vulnerability levels are distributed.
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Hartono, A., H. Hendrayana, and Akmaluddin. "Groundwater vulnerability assessment in Randublatung groundwater basin using SINTACS-LU model." IOP Conference Series: Earth and Environmental Science 1039, no. 1 (2022): 012007. http://dx.doi.org/10.1088/1755-1315/1039/1/012007.
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Abstract Randublatung groundwater basin is one of the crucial areas in Central Java that involves agricultural activities, which rely on groundwater sources. Agricultural activities have impacted the declining groundwater excellent of the Randublatung groundwater basin. The groundwater exploration was executed from an unconfined shallow aquifer that is in particular composed of alluvial deposits. Therefore, vulnerability evaluation to delineate regions most vulnerable to contamination from anthropogenic resources has come to be essential for sensible useful resource management and land use planning. This study estimates groundwater vulnerability by applying the SINTACS-LU model, which uses eight parameters to assess groundwater vulnerability and the geographical information system (GIS) in the Randublatung groundwater basin. The final subject level of SINTACS-LU (intrinsic vulnerability index) was created by multiplying the sum of each evaluation parameter by its specific weight. The resultant SINTACS-LU vulnerability map of the study area indicates that the areas most likely to be contaminated are between Kradenan and Keduntuban districts. Elsewhere, Rather high to high SINTACS-LU index values were observed, indicating areas of high vulnerability potential.
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Gemilang, Wisnu Arya, Gunardi Kusumah, and Ulung Jantama Wisha. "ASSESSING GROUNDWATER VULNERABILITY USING GALDIT METHOD (CASE STUDY: PADEMAWU SALT POND AREA, MADURA-INDONESIA)." Jurnal Kelautan Nasional 12, no. 3 (2017): 117. http://dx.doi.org/10.15578/jkn.v12i3.6358.
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Groundwater quality pollution in the Pademawu coastal area is very alarming. The major problem is landuse overlapping between salt pond and settlement area which influences environment degradation enhancement. One of negative impacts is groundwater vulnerability in the salt pond area. The salt content enhancement affects some wells become saline around the settlement area which proves the environment degradation has occurred. This study has aim to determine the groundwater vulnerability level in Pademawu coastal area. We employed GALDIT method to assess the groundwater vulnerability level by which calculates the six GALDIT parameters such as groundwater occurrence aquifer type, hydraulic conductivity, level above mean sea level, distance from coast, impact of existing intrusion and aquifer thickness. We divided the groundwater vulnerability into 3 classes, which are high, moderate, and low vulnerability. The sensitivity analysis result shows that the distance between groundwater source and the coast (D) has reached 74 % which tremendously influences the groundwater vulnerability level. The high level of vulnerability is found in the area near the coast and salt pond which deteriorated towards north. The limitation of groundwater utilization and salt pond area in Pademawu coastal area is one of the precise ways declining the intrusion of sea water to the groundwater quality condition.
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Souvannachith, Thilavanh, Doni Prakasa Eka Putra, and Heru Hendrayana. "Assessment of Groundwater Contamination Hazard by Nitrate in Samas Area, Bantul District, Yogyakarta, Indonesia." Journal of Applied Geology 2, no. 1 (2017): 36. http://dx.doi.org/10.22146/jag.30256.
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Groundwater resource is an essential for various purposes in Bantul district, Yogyakarta Special Province, Indonesia, especially on Poncosari village where the water supply are depending on shallow groundwater resources. On this village, most of the houses using dug wells to provide their water needs and applying inappropriate on-site sanitation system, however there are also difference land uses. This condition increase the hazard of groundwater contamination by fecal coli bacteria and nitrate. Therefore, this research aims in term of three main objectives: firstly, to know the level of nitrate concentration in groundwater, secondly, to assess groundwater vulnerability and thirdly, to assess the level of groundwater contaminant hazard. Hydrogeology observation was conducted and 47 water samples (44 groundwater samples and 3 surface water samples) were collected from different land use type and analyze for nitrate (NO 3) content. Methodology used to assess the groundwater vulnerability was Simple Vertical Vulnerability method and the groundwater contamination hazard built based on the combination of groundwater vulnerability and nitrate loading potential map. Results show that groundwater concentrations of nitrate range from 0.09–74.80 mg/L and the highest concentration found in the settlement area. Assessment of groundwater vulnerability reveals three areas of moderate, moderate high and high classes of vulnerability due to shallow groundwater and the sandy dominated overlying material in the study area. Combination of groundwater vulnerability and nitrate loading potential map indicated that groundwater contaminant hazard of nitrate range from low to high class. High class of hazard located in the settlement area, and low hazard of nitrate contamination found in the irrigated rice field area
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Medvid, Halyna, Luibov Yanush, Tatiana Solovey, Dmytro Panov, and Vasyl Harasymchuk. "Assessment of groundwater vulnerability within the cross-border areas of Ukraine and Poland." 58, no. 58 (June 1, 2023): 73–84. http://dx.doi.org/10.26565/2410-7360-2023-58-06.
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Problem statement. The growing global trend of groundwater consumption and excessive groundwater abstraction in many parts of the world requires an accurate and comprehensive assessment of the potential for groundwater resource development. The EU-WATERRES international project has begun developing a concept for coordinated management and harmonized monitoring of groundwater resources in the transboundary areas of Ukraine and Poland. Studying groundwater's natural protection status or vulnerability is a priority, as groundwater pollution has become a significant environmental problem in recent decades due to the growth of industrial production and agricultural activities. Study objective is to analyze the existing materials on the natural protection of groundwater within the study area and to quantify the vulnerability of the main useful aquifer (MUA) to surface pollution in the cross-border Polish-Ukrainian area. Methodology involves the quantitative method of groundwater vulnerability assessment by calculating the time of pollutant penetration into the aquifer through the aeration zone using the modified Bindemann formula and GIS. Research results. Studies have shown that the most vulnerable among MUA there is an unconfined alluvial Quaternary horizon (alQ) of the Syan and Dniester River basins. Throughout its entire development, its vulnerability corresponds to the "very high" category because of pollution from the surface caused by precipitation filtration. The Upper Cretaceous aquifer (K2) is less vulnerable. The groundwater of this horizon in the Polish part of the cross-border area is more vulnerable - here the vulnerability corresponds to the categories "very high" and "high". In the Ukrainian part, the Upper Cretaceous aquifer is characterized by better natural hydrogeological conditions and is less vulnerable to pollution. The Lower Neogene aquifer, which has a limited distribution on the slopes of the Western Bug-Syan River watershed within Roztochia, is the least vulnerable to pollution as compared to the others. The lithological composition of the aeration zone and the thickness of weakly permeable and practically impermeable rocks have a decisive impact on the filtration time and vulnerability of groundwater to pollutants from the surface by infiltration. Scientific novelty of the research. For the first time, a quantitative assessment of the vulnerability of the MUAs for the Polish-Ukrainian cross-border area was carried out. The use of the results of this assessment will facilitate the adoption of appropriate management decisions for the comprehensive protection of transboundary groundwater, prevention of its pollution, and reduction of anthropogenic impact.
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Aribowo, K., W. Wilopo, and D. H. Barianto. "Groundwater Vulnerability Mapping in Muntilan and its Surrounding Area, Magelang Regency, Central Java, Indonesia." IOP Conference Series: Earth and Environmental Science 930, no. 1 (2021): 012053. http://dx.doi.org/10.1088/1755-1315/930/1/012053.
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Abstract Groundwater resources are vital for residents in Muntilan Sub-District and its surrounding area in Central Java. The residents use groundwater for daily consumption by developing dug wells. Therefore, groundwater sources from contamination should be protected to guarantee sustainable groundwater use in this area. Groundwater vulnerability maps can be used as basic information to prevent groundwater contamination, land-use planning, and groundwater resources management. Therefore, this study aims to develop the groundwater vulnerability map in the Muntilan, Salam, Ngluwar Sub-Districts, Magelang Regency, Central Java. The vulnerability assessment used the DRASTIC method. The method has used the sum of the weighting of various parameters, including topography, net recharge, groundwater depth, the impact of the vadose zone, soil media, hydraulic conductivity of the aquifer, and aquifer media. The analysis results described that the DRASTIC Index (DI) value ranges from low to high levels, low levels, and the moderate level of vulnerability covers Muntilan sub-district and salam sub-district, while high levels of vulnerability are located in Muntilan, Ngluwar, and Salam Sub-Districts. Therefore, this vulnerability can be used for regional spatial planning and groundwater protection in the district.
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Yuliani, Emma, Prasetyo Rubiantoro, Angie Nelvina, and Voni Anggraeni. "Assessment of Groundwater Vulnerability to Pollution in the Metro Subwatershed Area Using the GOD Method." Gema Wiralodra 15, no. 2 (2024): 693–99. http://dx.doi.org/10.31943/gw.v15i2.687.
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The assessment of groundwater vulnerability to contamination in the Sub-Watershed (Sub DAS) Metro plays a crucial role in maintaining the sustainability of water resources. As an integral part of a complex river system, Sub DAS Metro faces the risk of groundwater pollution caused by human activities such as agriculture, industry, and domestic. Thus, research was conducted to determine the level of groundwater vulnerability using the GOD method (Groundwater Occurrence, Depth to Water Table, and Aquifer Media). The study identified three vulnerability classes out of the five existing classes, namely very low, low, and moderate. The GOD index indicates very low vulnerability with values ranging from 0.08 to 0.10, low vulnerability ranging from 0.11 to 0.12, and moderate vulnerability with a value of 0.48. Following the vulnerability assessment using the GOD method, mapping was conducted, assigning green for very low vulnerability areas, yellow for low vulnerability, and red for moderate vulnerability. The research findings provide strategic insights for designing effective mitigation and sustainable management of groundwater quality in Sub DAS Metro, playing a crucial role in preserving the sustainability of the groundwater ecosystem in the region
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Geng, Cheng, Debao Lu, Jinglin Qian, et al. "A Review on Process-Based Groundwater Vulnerability Assessment Methods." Processes 11, no. 6 (2023): 1610. http://dx.doi.org/10.3390/pr11061610.
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The unreasonable development and pollution of groundwater have caused damage to the groundwater system and environmental problems. To prevent this, the concept of “groundwater vulnerability” was proposed, and various evaluation methods were developed for groundwater protection. However, with changing climatic conditions and human activities, groundwater vulnerability is now emphasizing physical processes. This study aims to review and analyze the principles and applications of process-based groundwater vulnerability methods to achieve the source protection of groundwater resources. It introduces the assessment method and elaborates on pollutant migration processes and numerical simulation technology. Relevant articles from the past 30 years are reviewed to show the evolution of process-based groundwater vulnerability assessment. The study also discusses current research trends and proposes future development paths. It concludes that process-based groundwater vulnerability assessment will become the mainstream method, and modern technologies such as artificial intelligence will be necessary to solve challenges and achieve sustainable development.
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Vasileva, Tanya, Simeon Valtchev, and Aglaida Toteva. "Regional characterization of the vulnerability of the unconfined groundwaters in Bulgaria." Geologica Balcanica 52, no. 3 (2023): 15–20. http://dx.doi.org/10.52321/geolbalc.52.3.15.
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Groundwater vulnerability to contaminant infiltration from the surface, and to state deterioration, is related to the spatial distribution of rocks with diverse porosities, flow characteristics and unsaturated zone thickness. For the present regional assessment of groundwater vulnerability, it is considered most appropriate to adopt a method based on spatial differences in the geological and tectonic, and related hydrogeological, conditions in Bulgaria. The objective of the present study is to compile a vulnerability map of the unconfined groundwater in the country. This groundwater type is very important for drinking water supply, and it is at the highest risk of contamination. The groundwater on the territory of the Republic of Bulgaria has been divided into seven vulnerability classes, based on the corresponding hydrogeological units. The map is based on the geological map of Bulgaria in scale 1:100 000. It shows that groundwater is of low vulnerability over a large part of the country’s area (57%). Medium to medium-high groundwater vulnerability is defined for approximately 31% of the total area, while high and very high vulnerability are defined for 7% and 5%, correspondingly.
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Vasileva, Tanya, Simeon Valtchev, and Aglaida Toteva. "Regional characterization of the vulnerability of the unconfined groundwaters in Bulgaria." Geologica Balcanica 52, no. 3 (2023): 15–20. https://doi.org/10.52321/GeolBalc.52.3.15.
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Groundwater vulnerability to contaminant infiltration from the surface, and to state deterioration, is related to the spatial distribution of rocks with diverse porosities, flow characteristics and unsaturated zone thickness. For the present regional assessment of groundwater vulnerability, it is considered most appropriate to adopt a method based on spatial differences in the geological and tectonic, and related hydrogeological, conditions in Bulgaria. The objective of the present study is to compile a vulnerability map of the unconfined groundwater in the country. This groundwater type is very important for drinking water supply, and it is at the highest risk of contamination. The groundwater on the territory of the Republic of Bulgaria has been divided into seven vulnerability classes, based on the corresponding hydrogeological units. The map is based on the geological map of Bulgaria in scale 1:100 000. It shows that groundwater is of low vulnerability over a large part of the country's area (57%). Medium to medium-high groundwater vulnerability is defined for approximately 31% of the total area, while high and very high vulnerability are defined for 7% and 5%, correspondingly.
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Putranto, Thomas Triadi, Mochamad Arief Budihardjo, and Anik Sarminingsih. "Aplikasi Metode DRASTIC untuk Analisis Kerentanan Air Tanah terhadap Pencemaran di Kabupaten Tanah Laut, Kabupaten Banjar, dan Kota Banjarbaru, Provinsi Kalimantan Selatan." TEKNIK 43, no. 1 (2022): 45–56. http://dx.doi.org/10.14710/teknik.v43i1.42660.
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In 2017-2019, the Tanah Laut Regency, Banjar Regency, Banjarbaru City population was relatively high and continued to increase every year. The increase in the population reaches 1.39% to 2.92%. Along with population growth, the human need for clean water also increases, especially from groundwater. The study aims to assess the vulnerability of groundwater to contamination. The method used for the analysis of groundwater vulnerability to contamination is the DRASTIC method. It refers to seven parameters, namely groundwater depth (D), net recharge (R), aquifer media (A), soil layer (S), topography (T), impact to vadose zone (I) and hydraulic conductivity (C) by using geospatial analysis to calculate the DRASTIC Index/DI. From the results of geospatial analysis, there are three zones of groundwater vulnerability to contamination based on DI values, namely low vulnerability (95-106), medium vulnerability (106-146), and high vulnerability (146-186). The distribution of high zones dominates in the research area around of 75, 8%. The DRASTIC method requires a lot of data to provide an accurate analysis of groundwater vulnerability zone maps. This method has excellent accuracy and more effective in producing a map of the groundwater vulnerability zones to contamination.
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Widodo, T., W. Wilopo, and A. Setianto. "Groundwater Vulnerability to Pollution in Kediri City, East Java Province, Indonesia." IOP Conference Series: Earth and Environmental Science 930, no. 1 (2021): 012012. http://dx.doi.org/10.1088/1755-1315/930/1/012012.
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Abstract Groundwater is a water resource that is still a mainstay for humans. The need for groundwater increases with the growth of population and the development of the industrial and agricultural sectors. The residents of Kediri City still use wells from shallow aquifers to fulfill their water needs. Shallow aquifers are prone to pollution due to the influence of shallow groundwater depths and human activities. The purpose of this study is to determine the vulnerability of groundwater pollution in Kediri City. Groundwater vulnerability was conducted by the GOD method (Groundwater Occurrence, Overlaying Lithology, and Depth of Groundwater) that consists of 3 parameters, namely the groundwater confinement, the type of overlying strata, and the depth of the groundwater level. The analysis results show that the level of groundwater vulnerability according to the GOD method in Kediri City consists of moderate and high classes. The western and the eastern part of Kediri City is classified as a high level of vulnerability. In contrast, in the middle of Kediri City, it tends to experience a moderate level of vulnerability.
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Ahadiah, Sufia Nur, and Margaretha Widyastuti. "Study of groundwater vulnerability to contamination using the DRANTHVP method in wates groundwater Basin, Indonesia." E3S Web of Conferences 200 (2020): 02022. http://dx.doi.org/10.1051/e3sconf/202020002022.
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Wates Groundwater Basin in Kulon Progo Regency, the Special Region of Yogyakarta, covers an area of 152.67 sq.m. With human occupations continuously growing in the regency, the groundwater in this basin is subject to change. This research was intended to identify the spatial distribution of groundwater vulnerability of Wates Groundwater Basin using the DRANTHVP method, which factors in Depth to Water Table (D), Recharge (R), Aquifer Thickness (A), Nitrate Attenuation Intensity (N), Topography (T), Groundwater Velocity (V), and Pollutant Input Intensity (P). The data were analyzed quantitatively using a weighted tiered approach―the rating was based on to what degree each of these factors contributes to the calculated vulnerability, then overlaid to produce a groundwater vulnerability map. From the analysis, the index values were clustered into three classes of groundwater vulnerability: low 4.48-6.35, medium 6.35-7.39, and high 7.39-7.97. A large proportion of the basin had medium groundwater vulnerability (109.16 sq.m), and less than half of it had low (39.63 sq.m) and high groundwater vulnerability (3.88 sq.m); these severity levels vary depending on the hydrogeological characteristics and land use of a study area.
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Bele, S. "THE USE OF THE DRASTIC METHOD AND GIS IN ASSEESSING THE VULNERABILITY OF THE GROUNDWATER, IN THE VELIPOJA -ZADRIMA AQUIFER, ALBANIA." Bulletin of the Geological Society of Greece 50, no. 2 (2017): 639. http://dx.doi.org/10.12681/bgsg.11769.
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The Albanian plain area is densely populated. The population doubled during the last two decades and most of it uses the groundwaters of these aquifers. Aquifers in lowland areas are vulnerable to pollution. This article assesses the vulnerability of groundwater Velipoj-Zadrimè aquifer. This aquifer has a surface of 237 km2 and an average height of 10m above sea level. Groundwater recourses are connected with alluvial deposits formed by Drini and Buna rivers. The vulnerability Map is an ιmportant tool for the management of the territory. It guides the selection of areas for development projects, in order to avoid negative consequences on the quality of groundwater. Geographic Information Systems are very valuable programme for processing. The DRASTIC method has been used to map the natural aquifer vulnerability of the Velipoja-Zadrima study area. This method, applied to assess the vulnerability of the aquifer, was developed by the "Environmental Protection Agency (US EPA)" and "The National Association of Water Wells (NWWA)". It is a technique to assess the potential contamination of groundwater and is based on seven (7) parameters: Depth (D), Recharge (R), Aquifer media (A), Soil media (S), Topography (T), Impact of vadose zone (I), and Conductivity of the aquifer (C). The DRASTIC index is determined by the sum of the products of the Weight and site ratings of all the parameters. High values of vulnerability cover large areas of the aquifer. The results provide important information for local authorities in the management of resources and territory.
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Purnama, Setyawan, and Ahmad Cahyadi. "Groundwater Vulnerability to Pollution in Kasihan District, Bantul Regency, Indonesia." Forum Geografi 33, no. 2 (2019): 140–52. http://dx.doi.org/10.23917/forgeo.v33i2.7672.
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The groundwater vulnerability to pollution refers to the ease of pollutants reaching groundwater, so the groundwater will be polluted. The concept shows a probability that pollution will occured which basically bases on the assumption that the physical environment can prevent the flow of pollutants into the aquifer. The purpose of this study was to predict the vulnerability of groundwater in the study area against pollution. To achieve these objectives beside base on secondary data, also measured the depth of phreatic surface, slope and groundwater sampling. Location of measurement and sampling is determinated by considering location of infiltration measurement ever done by Purnama in 2017. To conduct groundwater vulnerability analysis on pollution in the study area, carried out by SINTACS Method which bases on a numerical system of weight and rating. Weight are determined based on the significance of the effect of the parameters on groundwater pollution, while the rating is determined based on the significance of the influence of variables in each parameters against groundwater pollution. As a result, it is known that groundwater vulnerability indeks in research area range from 117,0 to 189,9. According to criteria of SINTACS, the value are classified as moderate vulnerability and rather high vulnerability. Areas that include moderate levels of vulnerability generally located in Sentolo Formations that consist of limestone and has grumusol soil type. Areas that classified as rather high vulnerability is located in Yogyakarta Formation that consist of volcanic rock and has regosol soil type. Based on this phenomena, it can be said that geological aspect and type of soil greatly affect the vulnerability of groundwater to pollution in the research area.
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Boufekane, Abdelmadjid, Moufida Belloula, Gianluigi Busico, Tarek Drias, Azzeddine Reghais, and Djamel Maizi. "Hybridization of DRASTIC Method to Assess Future GroundWater Vulnerability Scenarios: Case of the Tebessa-Morsott Alluvial Aquifer (Northeastern Algeria)." Applied Sciences 12, no. 18 (2022): 9205. http://dx.doi.org/10.3390/app12189205.
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In this study, a new approach integrating a groundwater vulnerability method and a numerical model for predicting groundwater resource sustainability under actual and future conditions of exploitation (2010–2030) is proposed in the semi-arid region of the Tebessa-Morsott alluvial aquifer (northeastern Algeria). The groundwater vulnerability method-based DRASTIC model was used to evaluate and delineate the vulnerable areas using a GIS technique. The MODFLOW code, on the other hand, was used to calculate the dynamics of groundwater level under actual and future conditions of exploitation considering two scenarios. The results of the application of the DRASTIC method to the reference year conditions (year 2010) showed that the high and average vulnerability classes covered a wide zone of the study area, about 97%. These results were validated based on the nitrate concentration values (R2 = 0.955). However, the results for predicting future groundwater vulnerability showed that groundwater vulnerability variation over time (period 2010–2030) was closely related to groundwater depth variation caused by the pumping rate, since the decreases in the piezometric level produce a worsening of groundwater vulnerability. To achieve better groundwater management, an experimental site for artificial recharge supplemented by hydro-chemical monitoring of the groundwater could be an effective remediation strategy.
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Koesuma, Sorja, Umi Rosidah, and Ari Handono Ramelan. "Groundwater Vulnerability Zones Mapping Using DRASTIC and GOD Methods in Krendowahono Village, Karanganyar Regency." IOP Conference Series: Earth and Environmental Science 989, no. 1 (2022): 012002. http://dx.doi.org/10.1088/1755-1315/989/1/012002.
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Abstract Krendowahono Village is located in Karanganyar Regency, Central Java, Indonesia. During the dry season, several hamlets in Krendowahono Village experience a shortage of clean water. So an attempt must be made to maintain the quality and protect groundwater sources in areas of Krendowahono Village with fresh groundwater supplies. Analysing the vulnerability of groundwater is one of the attempts that can be made. The DRASTIC and GOD methods were used to conduct a vulnerability analysis of groundwater. The DRASTIC and GOD vulnerability assessments were then validated using water samples taken from resident wells. Groundwater vulnerability assessment utilizing the DRASTIC method resulted in the identification of two vulnerability classes: low vulnerability and medium vulnerability. While the GOD method generates three vulnerability classes for groundwater, they are low vulnerability class, medium vulnerability class, and high vulnerability class. The maximum correlation value between the results of the GOD method and the test of water samples with parameters of free ammonia, total dissolved solids (TDS), and salinity was obtained when the results of the GOD method and the test of water samples were validated using Spearman’s correlation. The correlation value associated with the pH parameter was the highest in the DRASTIC method. Likewise, the GOD method produced favourable performance in regional studies. This is demonstrated by the significant correlation between the GOD susceptibility test findings and the water sample test results.
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Putranto, Thomas Triadi, Narulita Santi, Dian Agus Widiarso, and Dimas Pamungkas. "Application of Aquifer Vulnerability Index (AVI) method to assess groundwater vulnerability to contamination in Semarang urban area." MATEC Web of Conferences 159 (2018): 01036. http://dx.doi.org/10.1051/matecconf/201815901036.
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An approach to assess groundwater to contamination is developing groundwater vulnerability map. Groundwater vulnerability is formulated as an intrinsic relative, the dimensionless property of a groundwater system that depends on its sensitivity to unfavourable human and natural impacts. Thus, to assess groundwater vulnerability to contamination in Semarang urban area is the objective of this research by using Aquifer Vulnerability Index (AVI). This method considered of two parameters related to the unsaturated zone, i.e. thickness (d) of each sedimentary layer in the unsaturated zone and Estimated hydraulic conductivity (K) of these sedimentary layers. There are five levels of groundwater vulnerability by using AVI method, i.e. extremely low, low, moderate/medium, high, and extremely high. The thinner the layer covers the aquifer, and the higher the value of the hydraulic conductivity of sediment layers will be increasingly vulnerable to pollution.
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BABU, O. GANESH, M. C. SASHIKKUMAR, R. SARAVANAN, and S. PITCHAIKANI. "Groundwater Vulnerability Assessment for Tirupur Block Using MODFLOW." International Journal of Earth Sciences and Engineering 10, no. 01 (2017): 121–25. http://dx.doi.org/10.21276/ijee.2017.10.0119.
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Nugraha, Gumilar Utamas, Karit Lumban Gaol, Priyo Hartanto, and Hendra Bakti. "Aquifer Vulnerability: Its Protection and Management—A Case Study in Pangkalpinang City, Indonesia." International Journal of Geophysics 2020 (December 29, 2020): 1–23. http://dx.doi.org/10.1155/2020/8887914.
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Increased anthropogenic activity in urban areas has exacerbated the vulnerability of groundwater resources. The AVI, GOD, SINTACS, and DRASTIC methods were used to analyze groundwater vulnerability in Pangkalpinang City. Schlumberger vertical electrical sounding was used to determine the lithology and aquifer configuration in the study area. There are three vulnerability index areas in the city of Pangkalpinang. Low levels of aquifer vulnerability were generally found in the southeastern and northwestern parts of the study area, whereas high levels of aquifer vulnerability were discovered in the northern and southern parts of the study area. Areas with low aquifer vulnerability levels generally have low hydraulic conductivity values on the protective layer. In these areas, groundwater extraction is possible with a reasonable extraction pattern. Industrial areas can also be built by considering environmental aspects. In an area with high-level aquifer vulnerability, groundwater pollution must be considerably managed. The areas should not be designated for industrial areas and excess groundwater extraction.
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Soares, Rogério Barbosa, Samiria Maria Oliveira Silva, Francisco de Assis de Souza, Ticiana Marinho de Carvalho Studart, and Renata Locarno Frota. "Groundwater vulnerability to agrochemical contamination." Revista Brasileira de Ciências Ambientais (Online) 55, no. 4 (2020): 440–55. http://dx.doi.org/10.5327/z2176-947820200531.
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This research aimed at evaluating groundwater vulnerability to agrochemical contamination. To that end, we developed an index called Hydric Vulnerability and Agrochemical Contamination Index (HVACI), which integrates a geographic information system and fuzzy logic to measure catchment vulnerability to agrochemical contamination. Our case study investigates two sub-basins, the Baixo Jaguaribe and the Médio Jaguaribe, in the state of Ceará, Brazil. We built a logical relationship matrix involving economic and environmental information as a tool to enhance public managers' decision-making capabilities. Evaluation was based on four categories of vulnerability — high, medium-high, medium-low, and low —, and we found that the joint area of the Baixo Jaguaribe and Médio Jaguaribe sub-basins presented the following levels of risk contamination: 80.3% of the area had low vulnerability, 3.5% had medium-low vulnerability, 3.0% had medium-high vulnerability, and 13.2% had high vulnerability. Geographically, the municipalities with high vulnerability to contamination by pesticides were Aracati, Icapuí, Limoeiro do Norte, Tabuleiro do Norte, and Quixeré. Therefore, HVACI is an important tool for directing environmental management efforts toward areas identified as highly vulnerable to agrochemical contamination.
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Nurfahasdi, Meutia, Agnes Yofita Zega, Agree Manganju Evannels Silalahi, Dally Raj Singh, Aziz Babayev, and Shakhlo Aitova. "Mapping groundwater vulnerability using drastic method." E3S Web of Conferences 434 (2023): 03019. http://dx.doi.org/10.1051/e3sconf/202343403019.
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Preventive management and protection of groundwater were to create a groundwater vulnerability map. This map provided information distribution on the level of vulnerability to groundwater contamination in an area. The impact made considered in making regional decisions to create a sustainable development framework. The DRASTIC method is an instrument for evaluating the vulnerability of groundwater pollution. The DRASTIC methods can use evaluate vulnerabilities of groundwater contamination which seven parameters: the depth of the groundwater table (D), rainPL (R), aquifer media (A), soil texture (S), topography (T), the influence of unsaturated zones (I), and hydraulic conductivity (C). The additional parameter is the use of land resulting from vulnerability. The parameter data will be poured into a map using ArcGIS and analyzed using the DRASTIC rating index. Eight attributes are included in the modified DRASTIC model, including hydraulic conductivity of the aquifer, topography, impact of the vadose zone, depth to water table, net recharge, aquifer media, soil media, and aquifer media. In a GIS system, these layers were combined using the Raster Calculator tool. The modelx was further validated using fifteen groundwater composite samples that were also gathered. Based on the results of the analysis, groundwater vulnerability in Terjun’s landfill from the five parameters, the value of the DRASCTIC index is 137 which indicates the vulnerability of groundwater is at medium/moderate. Aquifers next to floodplain areas are very sensitive, whereas those next to terrace areas are less vulnerable, according to the results. The model's findings confirm that the topography, soil media, and aquifer depth indicated the strongest correlations with vulnerability. A positive association between the vulnerability classes and the three groundwater quality measures electrical conductivity was also found during the validation of the final DRASTIC map. Although the levels of contamination at this time are below acceptable bounds, the possibility of additional contamination cannot be completely eliminated and is really rather plausible.
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Astabella, Relinda Dewi, Margaretha Widyastuti, and Tjahyo Nugroho Adji. "Analysis of Groundwater Vulnerability to contamination in Wonosari Basin and Gunungsewu Karst Transition Zone, Yogyakarta, Indonesia." E3S Web of Conferences 468 (2023): 08002. http://dx.doi.org/10.1051/e3sconf/202346808002.
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The Wonosari Basin and the Gunungsewu Karst Transition Zone have enormous groundwater resources but are hydrogeologically vulnerable to contamination. To achieve sustainable groundwater protection and management, it is imperative to study groundwater vulnerability. Th e research aimed to determine the spatial distribution of groundwater vulnerability in both areas. The COP method, which integrates the concentration of flow (C-Factor), overlaying layer (O-Factor), and precipitation (P-Factor), was used to assess the groundwater vulnerability. Based on the analysis, the groundwater was lowly to very highly vulnerable to contamination. The moderate vulnerability was dominant in both areas. The v*ery low vulnerability was concentrated in the basin, while the low vulnerability was distributed both in the basin (40.43%) and the transition zone (32.79%). High (12.53%) and very high vulnerabilities (5.48%) were found in the Gunungsewu Karst Transition Zone, especially in swallow hole recharge area (< 1 km2). The karst transition zone was more highly vulnerable to contamination than Wonosari Basin, a non -karst area. Various known contaminants are by-products of human activities, including nitrates from chemical fertilizers and domestic wastes. To prevent contamination, local governments should actively address the potential sources of contaminants while considering current groundwater vulnerabilities, particularly in the high and very high vulnerability zones.
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Hilal, Ismail, Ahmed Mahmoud Oubeid, Mohamed Qurtobi, et al. "Groundwater Vulnerability Mapping Using the Susceptibility Index (SI) Method and Tritium Isotopes: A Case Study of the Gharb Aquifer in Northwestern Morocco." E3S Web of Conferences 489 (2024): 07001. http://dx.doi.org/10.1051/e3sconf/202448907001.
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The Gharb aquifer plays a critical role as a source of drinking water and irrigation in Morocco. However, rapid economic growth and increased use of chemical fertilizers have led to groundwater pollution and land degradation. To address this issue, a vulnerability assessment was conducted using the Susceptibility Index (SI) method. Five parameters including depth to groundwater, effective recharge, slope, soil type, and land use/land cover were considered to evaluate groundwater vulnerability. The vulnerability assessment revealed index values ranging from 31 to 160. The study area was categorized into three zones of relative vulnerability (low, moderate, and high). Spatial analysis demonstrated significant spatial heterogeneity, with moderate vulnerability observed in areas characterized by shallow groundwater and composed primarily of sandstones in the northwest and southwest regions. In the entire study area, the low, medium, and high vulnerability zones covered 3%, 70%, and 26% (101 km2, 2725 km2, and 986 km2), respectively. Furthermore, Tritium isotope analysis and nitrate content were selected and applied as pollution markers to confirm and validate the obtained vulnerability map. The Tritium (3H) content in groundwater reveals a correlation with an R2 value of 0.86 with the degree of vulnerability, while the nitrate concentration in the aquifer’s groundwater showed a correlation with an R2 value of 0.55.
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Zhang, Xiao Ling, Feng Li, and Hong Zhan Liu. "Groundwater Vulnerability Fuzzy Evaluation in Qujing Basin." Advanced Materials Research 779-780 (September 2013): 1445–48. http://dx.doi.org/10.4028/www.scientific.net/amr.779-780.1445.
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As the Qujing citys industrial development, how to use and protect groundwater is the primary problem of urban development because of the non-uniformity distribution of groundwater. This paper establishes a two-story DRASTIC fuzzy evaluation model using analytical hierarchy process, by Qujing basin groundwater survey and data analysis. The model was applied to evaluate the groundwater vulnerability of Qujing basin and the east and west sides of the mountain with the consideration of depth to the water table, net recharge, aquifer material, soil type, topography, impact of vadose zone and hydraulic conductivity of aquifer with the help of monitoring data. The research results show that the Qujing basin is of high vulnerability, we should pay attention to the protection of groundwater environment in the use of groundwater. At the same time show that the model is more sensitivity for evaluating and much simple for calculating. This method is better to reflect the groundwater vulnerability spatial continuity, and further enriched the groundwater vulnerability methods.
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Li, Sheng, and Shi Chuan Liang. "Application of DRASTIC Model based on Entropy Weight to the Assessment on Vulnerability of Groundwater in Weining Plain." Advanced Materials Research 518-523 (May 2012): 4007–14. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.4007.
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Given the weight in groundwater vulnerability assessment, entropy weight combined with DRASTIC model is considered to assess the groundwater vulnerability. The assessment index weight is assessed by entropy weight and the model is ultimately applied to the assessment on the vulnerability of the groundwater in Weining Plain of Ningxia Hui Autonomous Region. Firstly, based on the seven assessment index attribute partition charts, the assessment index weight is calculated by entropy weight; then, by the ARCGIS grid image overlay tool to overlay the seven index grid images, the composite index chart of the assessment on the vulnerability of the groundwater in the study area is developed; finally, according to the classification standard, a partition chart of the assessment on the vulnerability of the groundwater in the study area is made to carry out the result analysis of the assessment on the vulnerability of the groundwater in the study area. The comprehensive assessment results indicate that the application of entropy weight to the DRASTIC model is feasible and the assessment results are more objective and direct.
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Männik, Magdaleena, and Enn Karro. "Application of Modified DRASTIC Method for the Assessment and Validation of Confined Aquifer Vulnerability in Areas with Diverse Quaternary Deposits." Water 15, no. 20 (2023): 3585. http://dx.doi.org/10.3390/w15203585.
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Accurate vulnerability assessment methods are essential for effective groundwater management and protection, allowing the identification of areas vulnerable to pollution. The widely used DRASTIC method has been modified to improve groundwater vulnerability assessment in regions where Quaternary sediments form a confining layer above the main useful aquifer. This study applied the modified DRASTIC method to two study areas in Estonia with heterogenous Quaternary sediments. The results were compared to the original DRASTIC method and a groundwater vulnerability assessment method used formerly in Estonia. The results significantly improved with the modified version compared to the original method. The modified method also exhibited stronger correlations with nitrate concentration data, illustrating the higher accuracy of the modified DRASTIC method in vulnerability assessment in regions with confined aquifers. The results highlight the significance of modifying the vulnerability assessment methods according to regional geological conditions to evaluate groundwater vulnerability accurately and support informed decision-making in groundwater management and protection.
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Bah, Mohamed Allieu, Doni Prakasa Eka Putra, and Heru Hendrayana. "Assessment of the vulnerability of groundwater to anthropogenic contaminants in Kasihan, Bantul, Yogyakarta special province, Indonesia." Systematic Literature Review and Meta-Analysis Journal 3, no. 2 (2022): 66–85. http://dx.doi.org/10.54480/slrm.v3i2.55.
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Groundwater contamination is a ubiquitous problem, especially in developing countries such as Indonesia. Groundwater vulnerability assessment is an effective tool that provides information about the status of groundwater and potential contaminants. This approach helps in groundwater conservation and management. This study conducted an intrinsic groundwater vulnerability assessment to anthropogenic contamination in Kasihan, Yogyakarta, Indonesia. This research delineated the spatial distribution of physicochemical properties of groundwater and analysed land-use patterns. This study was conducted based on Groundwater confinement, Overlying materials and Depth to groundwater table (GOD) method. The GOD method was applied to assess the intrinsic properties of the geology and hydrogeology of the study area. Secondary land use data were analysed using GIS software to determine major anthropogenic activities in the research area. Land use and cover analysis of the study area indicated a rapid development including settlement, agricultural and industrial facilities. Groundwater vulnerability assessment showed medium to high classes. These findings suggest a high probability of contamination at present and in the future. Thus, future researchers should assess the groundwater quality of Kasihan based on specific vulnerability using groundwater flow and mass transport modelling because the investigated area is highly susceptible to pollutants.
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Bai, Li Ping, Bin Gong, Xiao Li Gan, and Yun Luo. "Research on GIS-Based Groundwater Pollution Vulnerability Assessment in Chengting New District, China." Advanced Materials Research 518-523 (May 2012): 2762–65. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.2762.
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Groundwater is an important component of water resources. Compared with surface water, groundwater has slower flow rate and lower capacity of diluting and self-purification. It is difficult to treat the groundwater pollution. Therefore, it is important to protect the groundwater from being polluted for planning and management of groundwater resources. It is considered as an effective method for decision makers and administrators to identify the high risk level of groundwater pollution through groundwater pollution vulnerability assessment. In this study, the most widely used DRASTIC model and GIS software were used to evaluate the groundwater vulnerability of Chengting new district in Shijiazhuang, china. The groundwater vulnerability grades of the study area were divided by the model. The research results could provide scientific basis for the new district planning and construction.
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Sahu, Indrajeet, A. D. Prasad, and Ishtiyaq Ahmad. "Comparison of GIS-Based Intrinsic Groundwater Vulnerability Assessment Methods: DRASTIC and SINTACS." Nature Environment and Pollution Technology 21, no. 5(Suppl) (2022): 2249–58. http://dx.doi.org/10.46488/nept.2022.v21i05.019.
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The possibility of contaminants percolating and diffusing into the groundwater system is referred to as groundwater vulnerability. When groundwater once gets polluted it is very difficult to process/clean it so, measures must be taken to assess the vulnerability of the groundwater for effective groundwater conservation and management planning. This study aims to evaluate and map the vulnerability of Raipur city using the SINTACS and DRASTIC models and to compare their effectiveness between them. To assess the hydrogeological setting and evaluate aquifer vulnerability, each model includes seven environmental parameters (aquifer hydrogeologic features, effective infiltration, topographic slope, soil media, water table depth, unsaturated conditions, and hydraulic conductivity). The parameter data sets are evaluated in a Geographical Information system (GIS) environment to get the vulnerability index (VI), the index is categorized into five classes that show low to high vulnerability. The area under the low class for DRASTIC and SINTACS is 26.14% and 20.34% respectively whereas for the highly vulnerable class it is 15.54% and 22.54% respectively of the total area. By comparing the 15-groundwater sample value of nitrate concentration on the two vulnerability maps it was found that the SINTACS method result was shown to be significantly associated with the nitrate concentration with an accuracy of 86.7 percent.
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Zhang, Li Zhong, Yong Bo Zhang, Xiao Yuan Zhou, et al. "Groundwater Vulnerability Assessment System Based on GIS." Advanced Materials Research 301-303 (July 2011): 724–30. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.724.
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On the basis of GIS technique, with single factor layer data of spatial database and Overlay analysis method, the designing of groundwater vulnerability assessment model for DRASTIC、LSD、DRTA、DLCT has been proposed. Under VC ++6.0, with the application of MapGIS development kit, the groundwater vulnerability assessment model system has been developed. It can associate professionals for performance evaluation of groundwater vulnerability.
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Canora, Filomena, and Francesco Sdao. "Groundwater Vulnerability to Pollution Assessment." Water 14, no. 14 (2022): 2205. http://dx.doi.org/10.3390/w14142205.
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Kurwadkar, Sudarshan. "Groundwater Pollution and Vulnerability Assessment." Water Environment Research 89, no. 10 (2017): 1561–77. http://dx.doi.org/10.2175/106143017x15023776270584.
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Bovolo, C. Isabella, Geoff Parkin, and Marios Sophocleous. "Groundwater resources, climate and vulnerability." Environmental Research Letters 4, no. 3 (2009): 035001. http://dx.doi.org/10.1088/1748-9326/4/3/035001.
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Holding, S., D. M. Allen, S. Foster, et al. "Groundwater vulnerability on small islands." Nature Climate Change 6, no. 12 (2016): 1100–1103. http://dx.doi.org/10.1038/nclimate3128.
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Lobo Ferreira, J. P., and Manuel M. Oliveira. "Groundwater vulnerability assessment in Portugal." Geofísica Internacional 43, no. 4 (2004): 541–50. http://dx.doi.org/10.22201/igeof.00167169p.2004.43.4.783.
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Durante la década de los 70's y 80's el mapeo de vulnerabilidad acuífera en Portugal fue basado principalmente en la interpretación de la información geológica en términos de la vulnerabilidad del agua subterránea ala contaminación. En 1987 un método paramétrico para la evaluación de Ia vulnerabilidad ala contaminación fue introducido por la EPA (el índice DRASTIC). En 1993 Portugal fue el primer estado de Ia Unión Europea en tener su territorio mapeado usando el índice DRASTIC (1 :500,000). Desde entonces varias aplicaciones del índice DRASTIC han sido hechas a diferentes escalas y usando diferentes fuentes de información base. El uso de diferentes fuentes de información, con diferente escala y algunas veces con diferente acercamiento, llevan a diferentes mapas finales de la misma área, como se muestra en este artículo de la península Setubal, al sur de Lisboa. Siguiendo el desarrollo de diferentes metodologías nuevas para la evaluación de la vulnerabilidad acuífera, basadas en la caracterización de diferentes parámetros, una comparación de los resultados calculados con estas metodologías fue justificable. Con este propósito, una comparación entre los resultados de la aplicación de seis métodos de índices de vulnerabilidad (AVI, GOD, DRASTIC, SI, EPPNA y SINTACS) fue realizada para un sistema acuífero localizado cerca de Evora (Alentejo, Portugal). Al final de este articulo son presentadas conclusiones para futuras investigaciones sobre mapeos de vulnerabilidad.doi: sin doi
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Yin, Leihao, Beiyi Xu, Wutian Cai, Pengpeng Zhou, and Li Yang. "Intrinsic Vulnerability Assessment of the Qingduo Karst System, Henan Province." Water 15, no. 19 (2023): 3425. http://dx.doi.org/10.3390/w15193425.
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Groundwater vulnerability assessments are vital for protecting valuable resources by revealing susceptibility to contamination. This study developed an enhanced index model to assess the intrinsic vulnerability of a supplied karst aquifer in Qingduo, Henan Province. The model considered the 3-D geological structure and modified indices to account for Northern China’s mild karstification. Emphasizing the absolute infiltration capacity of surface contaminants, the model also integrated the groundwater sources and sinks (SS) index. The vulnerability map revealed that over 60% of the aquifers, including the Qingduo wellfield, exhibited very low to low vulnerability. Conversely, only small areas (<5%) along the Kejing (KJ) fault’s southern wall were classified as highly vulnerable. These findings highlighted the significant role of groundwater flow alongside aquifer conditions. The upward groundwater flow through the Fengmenkou (FMK) faults slowed the downward infiltration of surface contaminants into the lower karst aquifer, effectively reducing vulnerabilities. Lower levels of dissolved lead (Pb) and nitrate (NO3−) in Qingduo groundwater aligned with PISSR vulnerability mapping. Sensitivity analysis assessed the results’ sensitivity to index weight assignment. The inclusion of the sources and sinks (SS) index holds implications for semi-quantitatively assessing dynamic groundwater vulnerability by delineating flow patterns.