scholarly journals The construction of synthetic maps of groundwater vulnerability on the example of catchment area of Žilůvky stream

2007 ◽  
Vol 55 (2) ◽  
pp. 43-52
Author(s):  
Kristýna Kubová ◽  
Tomáš Mikita
Keyword(s):  
Natural Environment ◽  
Unsaturated Zone ◽  
Catchment Area ◽  
Groundwater Protection ◽  
Groundwater Vulnerability ◽  
Geological Structure ◽  
Hydrogeological Conditions ◽  
Vulnerability Maps

The term “vulnerability of groundwater to contamination” was introduced by French hydrogeologist J. Margat in the late 1960s. The idea of describing the degree of vulnerability of groundwater to contaminants as a function of hydrogeological conditions by means of maps was conceived to show that the protection provided by the natural environment varies at different locations. Groundwater vulnerability maps belong to category of special-purpose environmental maps and introduce one of the possible tool to solve groundwater protection. The synthetic map of relevant catchment area of Žilůvky stream was composed in the program ArcGIS as a intersection between 4 partial maps: the map of soil character according to infiltration capability, the map of geological structure according to permeability, the map of unsaturated zone potency and the map of karst phenomens, springs and boreholes localization. The final map was presented in 4 variants A – D according to meaning of layers which have the influence on groundwater vulnerability.

scholarly journals Fuzzy or Non-Fuzzy? A Comparison between Fuzzy Logic-Based Vulnerability Mapping and DRASTIC Approach Using a Numerical Model. A Case Study from Qatar

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1288
Author(s):  
Husam Musa Baalousha ◽  
Bassam Tawabini ◽  
Thomas D. Seers
Keyword(s):  
Fuzzy Logic ◽  
Numerical Model ◽  
Vulnerability Assessment ◽  
Anthropogenic Impacts ◽  
Groundwater Vulnerability ◽  
Vulnerability Mapping ◽  
Anthropogenic Contamination ◽  
Weighted Overlay ◽  
Vulnerability Maps

Vulnerability maps are useful for groundwater protection, water resources development, and land use management. The literature contains various approaches for intrinsic vulnerability assessment, and they mainly depend on hydrogeological settings and anthropogenic impacts. Most methods assign certain ratings and weights to each contributing factor to groundwater vulnerability. Fuzzy logic (FL) is an alternative artificial intelligence tool for overlay analysis, where spatial properties are fuzzified. Unlike the specific rating used in the weighted overlay-based vulnerability mapping methods, FL allows more flexibility through assigning a degree of contribution without specific boundaries for various classes. This study compares the results of DRASTIC vulnerability approach with the FL approach, applying both on Qatar aquifers. The comparison was checked and validated against a numerical model developed for the same study area, and the actual anthropogenic contamination load. Results show some similarities and differences between both approaches. While the coastal areas fall in the same category of high vulnerability in both cases, the FL approach shows greater variability than the DRASTIC approach and better matches with model results and contamination load. FL is probably better suited for vulnerability assessment than the weighted overlay methods.

scholarly journals Groundwater vulnerability assessment: from overlay methods to statistical methods in the Lombardy Plain area

2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Stefania Stevenazzi ◽  
Marco Masetti ◽  
Giovanni Pietro Beretta
Keyword(s):  
Land Use Planning ◽  
Vulnerability Assessment ◽  
Industrial Development ◽  
Regional Scale ◽  
Scientific Progress ◽  
Groundwater Vulnerability ◽  
Anthropogenic Sources ◽  
Plain Area ◽  
Groundwater Vulnerability Assessment ◽  
Vulnerability Maps

Groundwater is among the most important freshwater resources. Worldwide, aquifers are experiencing an increasing threat of pollution from urbanization, industrial development, agricultural activities and mining enterprise. Thus, practical actions, strategies and solutions to protect groundwater from these anthropogenic sources are widely required. The most efficient tool, which helps supporting land use planning, while protecting groundwater from contamination, is represented by groundwater vulnerability assessment. Over the years, several methods assessing groundwater vulnerability have been developed: overlay and index methods, statistical and process-based methods. All methods are means to synthesize complex hydrogeological information into a unique document, which is a groundwater vulnerability map, useable by planners, decision and policy makers, geoscientists and the public. Although it is not possible to identify an approach which could be the best one for all situations, the final product should always be scientific defensible, meaningful and reliable. Nevertheless, various methods may produce very different results at any given site. Thus, reasons for similarities and differences need to be deeply investigated. This study demonstrates the reliability and flexibility of a spatial statistical method to assess groundwater vulnerability to contamination at a regional scale. The Lombardy Plain case study is particularly interesting for its long history of groundwater monitoring (quality and quantity), availability of hydrogeological data, and combined presence of various anthropogenic sources of contamination. Recent updates of the regional water protection plan have raised the necessity of realizing more flexible, reliable and accurate groundwater vulnerability maps. A comparison of groundwater vulnerability maps obtained through different approaches and developed in a time span of several years has demonstrated the relevance of the continuous scientific progress, recognizing strengths and weaknesses of each research.

scholarly journals Groundwater Protection Using DRASTIC Vulnerability Maps and ArcFem Tools for Perimeter Protection: A Case Study in the Charf El Akab Aquifer (Morocco North)

2018 ◽  
Vol 09 (06) ◽  
pp. 289-307 ◽  
Author(s):  
Moulay Lhassan Sadiki ◽  
Lhoussaine El Mezouary ◽  
Abdelaziz Khomsi ◽  
Badr Benseddik ◽  
El Houssine El Gasmi ◽  
...  
Keyword(s):  
Groundwater Protection ◽  
Vulnerability Maps

scholarly journals First Application of the Integrated Karst Aquifer Vulnerability (IKAV) method. Potential and Actual vulnerability in Yucatan, Mexico

2021 ◽  
Author(s):  
Miguel Moreno-Gómez ◽  
Carolina Martínez-Salvador ◽  
Rudolf Lied ◽  
Catalin Stefan ◽  
Julia Pacheco
Keyword(s):  
Transport Model ◽  
Karst Aquifer ◽  
Theoretical Models ◽  
Groundwater Vulnerability ◽  
Aquifer Vulnerability ◽  
Environmental Damage ◽  
Integrated Method ◽  
Support Tools ◽  
Vulnerability Maps ◽  
Water Resources Protection

Abstract. Groundwater vulnerability maps are important decision support tools for water resources protection against pollution and helpful to minimize environmental damage. However, these tools carry a high subjectivity along the multiple steps taken for the development of such maps. Additionally, the theoretical models on which they are based do not consider important parameters such as pollutant concentration or pollutant residence time in a given section of the aquifer, solely focusing the analysis on a theoretical travel time from a release point towards a target. In this work, an integrated methodology for the evaluation of potential (intrinsic) and actual vulnerability is presented. This integrated method, named IKAV, was developed after the analysis of several study cases and the application of multiple intrinsic groundwater vulnerability methods in a selected study area. Also, a solute transport model served as the basis to define additional parameters for vulnerability analysis for areas severely affected by anthropogenic practices. A defined workflow and several criteria for parameters and attributes selection, rating and weighting assignment, and vulnerability classification are presented. The first application of the IKAV method was carried out in the Yucatan karst, demonstrating to be a reliable method for vulnerability estimation. Results demonstrated the scope of the IKAV method to highlight important regional conditions, minimizing the subjectivity, and expanding the analysis of vulnerability.

scholarly journals Groundwater vulnerability assessment and mapping in shallow groundwater

2021 ◽  
Vol 926 (1) ◽  
pp. 012047
Author(s):  
K Aribowo ◽  
W Wilopo ◽  
D H Barianto
Keyword(s):  
Land Use Planning ◽  
Unsaturated Zone ◽  
Shallow Groundwater ◽  
Primary Source ◽  
Groundwater Vulnerability ◽  
Research Area ◽  
A Value ◽  
Groundwater Vulnerability Assessment ◽  
Vulnerability Map ◽  
Very High

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.

scholarly journals Vulnerability Assessment as a Basis for Sanitary Zone Delineation of Karst Groundwater Sources—Blederija Spring Case Study

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2775
Author(s):  
Vladimir Živanović ◽  
Nebojša Atanacković ◽  
Saša Stojadinović
Keyword(s):  
Vulnerability Assessment ◽  
Groundwater Vulnerability ◽  
Assessment Method ◽  
Karst Groundwater ◽  
Karst Spring ◽  
Aquifer Recharge ◽  
Protection Zones ◽  
Groundwater Vulnerability Assessment ◽  
Vulnerability Maps ◽  
Dependent Model

The application of groundwater vulnerability methods has great importance for the sanitary protection zones delineation of karstic sources. Source vulnerability assessment of karst groundwater has mainly relied on the European approach (European Cooperation in Science and Technology—COST action 620), which includes analysis of the K factor, which refers to water flow through the saturated zone of the karst system. In the paper, two approaches to groundwater vulnerability assessment have been applied, COP + K and TDM (Time-Dependent Model) methods, to produce the most suitable source vulnerability map that can be transformed into sanitary protection zones maps. Both methods were tested on the case example of Blederija karst spring in Eastern Serbia. This spring represents a classical karst spring with allogenic and autogenic recharge. Dual aquifer recharge points out the necessity for the inclusion of the vulnerability assessment method created especially for the assessment of karst groundwater. Obtained vulnerability maps show similar results, particularly in the spring and the ponor areas, and these zones are most important for future protection. The COP + K method brings out three vulnerability classes that can be directly transformed into three sanitary protection zones. Contrary to the previous one, the TDM method uses water travel time as a vulnerability degree. The results show that the final map can be easily used to define sanitary zones considering different national legislation.

Assessment on the Vulnerability of Fangshan Karst Groundwater in Beijing Based on European Model

2013 ◽  
Vol 838-841 ◽  
pp. 1772-1775
Author(s):  
Nan Yang ◽  
Qing Liang Yuan ◽  
Liang Sun ◽  
Jun Zhou ◽  
Shi Jun Li
Keyword(s):  
North China ◽  
Groundwater Vulnerability ◽  
Karst Groundwater ◽  
European Model ◽  
Karst Caves ◽  
The North ◽  
Vulnerability Maps

The North China Approach to assess karst groundwater vulnerability was proposed based on European Model, modifying C and P factors to adapt the specificity of karst regions specificity in North China. It was firstly applied to the Fangshan karst regions in Beijing and the vulnerability maps indicate high vulnerability nearby karst caves and the areas lacking overlying soil.

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