Quantitative Risk Assessment Of Groundwater Quality Utilizing Gis Technology And Coupled Groundwater Models

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Quantitative Risk Assessment of Groundwater Quality Utilizing GIS Technology and Coupled Groundwater Models

Author : Olayinka Oladeji
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (86 download)

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Book Synopsis Quantitative Risk Assessment of Groundwater Quality Utilizing GIS Technology and Coupled Groundwater Models by : Olayinka Oladeji

Download or read book Quantitative Risk Assessment of Groundwater Quality Utilizing GIS Technology and Coupled Groundwater Models written by Olayinka Oladeji and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The thesis presents a two-dimensional Risk Assessment Method (RAM) where the assessment of risk to the groundwater resources incorporates both the quantification of the probability of the occurrence of contaminant source terms, as well as the assessment of the resultant impacts. The approach emphasizes the need for a greater dependency on the potential pollution sources, rather than the traditional approach where assessment is based mainly on the intrinsic geo-hydrologic parameters. The risk is calculated using Monte Carlo simulation methods whereby random pollution events were generated to the same distribution as historically occurring events or a priori potential probability distribution. Integrated mathematical models then simulate contaminant concentrations at the predefined monitoring points within the aquifer. The spatial and temporal distributions of the concentrations were calculated from repeated realisations, and the number of times when a user defined concentration magnitude was exceeded is quantified as a risk. The method was setup by integrating MODFLOW-2000, MT3DMS and a FORTRAN coded risk model, and automated, using a DOS batch processing file. GIS software was employed in producing the input files and for the presentation of the results. The functionalities of the method, as well as its sensitivities to the model grid sizes, contaminant loading rates, length of stress periods, and the historical frequencies of occurrence of pollution events were evaluated using hypothetical scenarios and a case study. Chloride-related pollution sources were compiled and used as indicative potential contaminant sources for the case study. At any active model cell, if a random generated number is less than the probability of pollution occurrence, then the risk model will generate synthetic contaminant source term as an input into the transport model. The results of the applications of the method are presented in the form of tables, graphs and spatial maps. Varying the model grid sizes indicates no significant effects on the simulated groundwater head. The simulated frequency of daily occurrence of pollution incidents is also independent of the model dimensions. However, the simulated total contaminant mass generated within the aquifer, and the associated volumetric numerical error appear to increase with the increasing grid sizes. Also, the migration of contaminant plume advances faster with the coarse grid sizes as compared to the finer grid sizes. The number of daily contaminant source terms generated and consequently the total mass of contaminant within the aquifer increases in a non linear proportion to the increasing frequency of occurrence of pollution events. The risk of pollution from a number of sources all occurring by chance together was evaluated, and quantitatively presented as risk maps. This capability to combine the risk to a groundwater feature from numerous potential sources of pollution proved to be a great asset to the method, and a large benefit over the contemporary risk and vulnerability methods.

Groundwater-risk Analysis of New York Utilizing GIS Technology

Author : Charles J. Hillenbrand
Publisher :
ISBN 13 :
Total Pages : 684 pages
Book Rating : 4.:/5 (112 download)

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Book Synopsis Groundwater-risk Analysis of New York Utilizing GIS Technology by : Charles J. Hillenbrand

Download or read book Groundwater-risk Analysis of New York Utilizing GIS Technology written by Charles J. Hillenbrand and published by . This book was released on 2002 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Hydrogeology and Groundwater Modeling

Author : Neven Kresic
Publisher : CRC Press
ISBN 13 : 9781566702195
Total Pages : 482 pages
Book Rating : 4.7/5 (21 download)

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Book Synopsis Hydrogeology and Groundwater Modeling by : Neven Kresic

Download or read book Hydrogeology and Groundwater Modeling written by Neven Kresic and published by CRC Press. This book was released on 1997-03-24 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantitative Solutions in Hydrogeology and Groundwater Modeling addresses and solves a variety of questions and problems from hydrogeological practice. It includes major aspects of quantitative groundwater evaluation, from basic laboratory determination of hydrogeological parameters to complex analytical calculations and modeling for engineering purposes. Groundwater modeling is a strong trend in hydrogeology. Recent years have seen the rapid development of sophisticated and powerful groundwater models, along with a decrease in the use of the more mathematically demanding analytical quantitative solutions. Quantitative Solutions in Hydrogeology and Groundwater Modeling avoids this conflict by explaining both modeling and mathematical solutions in detail.

Groundwater Vulnerability Assessment and Mapping using DRASTIC Model

Author : Prashant Kumar
Publisher : CRC Press
ISBN 13 : 100006543X
Total Pages : 121 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Groundwater Vulnerability Assessment and Mapping using DRASTIC Model by : Prashant Kumar

Download or read book Groundwater Vulnerability Assessment and Mapping using DRASTIC Model written by Prashant Kumar and published by CRC Press. This book was released on 2019-07-10 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shows the effectiveness of DRASTIC model in a geographical setting for validation of vulnerable zones and presents the optimization of parameters for the development of precise maps highlighting several zones with varied contamination. Impact of vadose zone has also been assessed by considering every sub-surface layer. Exclusive title covering effectiveness of DRASTIC model for groundwater vulnerability assessment Reviews of the strengths and limitations of assessment methods Presents multi-criteria evaluation of hydro-geological and anthropogenic factors Discusses integration with geographic information system (GIS) and remote sensing (RS) Includes application of groundwater governance framework with a case study study of a geographical setting

Groundwater Vulnerability Assessment and Mapping

Author : Andrzej J. Witkowski
Publisher : CRC Press
ISBN 13 : 1482266164
Total Pages : 260 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Groundwater Vulnerability Assessment and Mapping by : Andrzej J. Witkowski

Download or read book Groundwater Vulnerability Assessment and Mapping written by Andrzej J. Witkowski and published by CRC Press. This book was released on 2014-04-21 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the contemporary issues surrounding groundwater pollution risk assessment and the application of vulnerability and risk assessment maps for the effective protection and management of aquifers. Numerous new and improved approaches to intrinsic and specific vulnerability assessment (modified DRASTIC, GOD, VULK, VURAAS) are descri

Utilization of Numerical Groundwater Models for Water Resource Management

Author :
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Utilization of Numerical Groundwater Models for Water Resource Management by :

Download or read book Utilization of Numerical Groundwater Models for Water Resource Management written by and published by . This book was released on 1978 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Groundwater Pollution Risk Assessment Under Scenarios of Climate and Land Use Change in the Northern Great Plains

Author : Ruopu Li
Publisher :
ISBN 13 : 9781267264091
Total Pages : 156 pages
Book Rating : 4.2/5 (64 download)

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Book Synopsis Groundwater Pollution Risk Assessment Under Scenarios of Climate and Land Use Change in the Northern Great Plains by : Ruopu Li

Download or read book Groundwater Pollution Risk Assessment Under Scenarios of Climate and Land Use Change in the Northern Great Plains written by Ruopu Li and published by . This book was released on 2012 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling groundwater vulnerability to pollution is critical for implementing programs to protect groundwater quality. Traditionally, groundwater vulnerability was modeled based on current hydrogeology and land use conditions. However, groundwater vulnerability is strongly dependent on factors such as depth-to-water, recharge and land use conditions that may change in response to future changes in climate and/or socio-economic conditions. For example, global warming may lead to northward shifts in cropping patterns and changes in crop mixes (and use of farm chemicals). Meanwhile, growing demands for biofuels are resulting in expanding corn acreage, and may lead to pressures to remove land from the Conservation Reserve Program (CRP) or otherwise open lands that are currently not cropped to cultivation. Such changes may have significant implications for groundwater quality. In this research, a modeling framework, which employs four sub-models linked within a GIS environment, was presented to evaluate the groundwater pollution risks under future climate and land use changes in North Dakota. The major sub-models include a groundwater vulnerability model and a biofuels-related land use change model, which were illustrated in two separate studies. The results showed that areas with high vulnerability will expand northward and/or northwestward in Eastern North Dakota under different scenarios. GIS-based models that account for future changes in climate and land use can help decision-makers identify potential future threats to groundwater quality and take early steps to protect this critical resource.

Spatial Modeling in GIS and R for Earth and Environmental Sciences

Author : Hamid Reza Pourghasemi
Publisher : Elsevier
ISBN 13 : 0128156953
Total Pages : 798 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Spatial Modeling in GIS and R for Earth and Environmental Sciences by : Hamid Reza Pourghasemi

Download or read book Spatial Modeling in GIS and R for Earth and Environmental Sciences written by Hamid Reza Pourghasemi and published by Elsevier. This book was released on 2019-01-18 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatial Modeling in GIS and R for Earth and Environmental Sciences offers an integrated approach to spatial modelling using both GIS and R. Given the importance of Geographical Information Systems and geostatistics across a variety of applications in Earth and Environmental Science, a clear link between GIS and open source software is essential for the study of spatial objects or phenomena that occur in the real world and facilitate problem-solving. Organized into clear sections on applications and using case studies, the book helps researchers to more quickly understand GIS data and formulate more complex conclusions. The book is the first reference to provide methods and applications for combining the use of R and GIS in modeling spatial processes. It is an essential tool for students and researchers in earth and environmental science, especially those looking to better utilize GIS and spatial modeling. Offers a clear, interdisciplinary guide to serve researchers in a variety of fields, including hazards, land surveying, remote sensing, cartography, geophysics, geology, natural resources, environment and geography Provides an overview, methods and case studies for each application Expresses concepts and methods at an appropriate level for both students and new users to learn by example

Groundwater Contamination, Volume II

Author : Chester D. Rail
Publisher : CRC Press
ISBN 13 : 1482278952
Total Pages : 196 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Groundwater Contamination, Volume II by : Chester D. Rail

Download or read book Groundwater Contamination, Volume II written by Chester D. Rail and published by CRC Press. This book was released on 2000-05-02 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated and expanded into two volumes, the new edition of Groundwater Contamination explains in a comprehensive way the sources for groundwater contamination, the regulations governing it, and the technologies for abating it. This volume discusses aquifer management and strategies for stormwater control and groundwater restoration. A number o

Climate Change and Groundwater

Author : Walter Dragoni
Publisher : Geological Society of London
ISBN 13 : 9781862392359
Total Pages : 200 pages
Book Rating : 4.3/5 (923 download)

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Book Synopsis Climate Change and Groundwater by : Walter Dragoni

Download or read book Climate Change and Groundwater written by Walter Dragoni and published by Geological Society of London. This book was released on 2008 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a general consensus that for the next few decades at least, the Earth will continue its warming. This will inevitably bring about serious environmental problems. For human society, the most severe will be those related to alterations of the hydrological cycle, which is already heavily influenced by human activities. Climate change will directly affect groundwater recharge, groundwater quality and the freshwater-seawater interface. The variations of groundwater storage inevitably entail a variety of geomorphological and engineering effects. In the areas where water resources are likely to diminish, groundwater will be one of the main solutions to prevent drought. In spite of its paramount importance, the issue of 'Climate Change and Groundwater' has been neglected. This volume presents some of the current understanding of the topic.

Modeling Groundwater Flow and Pollution

Author : Jacob Bear
Publisher : Springer Science & Business Media
ISBN 13 : 9781556080142
Total Pages : 438 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Modeling Groundwater Flow and Pollution by : Jacob Bear

Download or read book Modeling Groundwater Flow and Pollution written by Jacob Bear and published by Springer Science & Business Media. This book was released on 1987-09-30 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwater constitutes an important component of many water resource systems, supplying water for domestic use, for industry, and for agriculture. Management of a groundwater system, an aquifer, or a system of aquifers, means making such decisions as to the total quantity of water to be withdrawn annually, the location of wells for pumping and for artificial recharge and their rates, and control conditions at aquifer boundaries. Not less important are decisions related to groundwater qUality. In fact, the quantity and quality problems cannot be separated. In many parts of the world, with the increased withdrawal of ground water, often beyond permissible limits, the quality of groundwater has been continuously deteriorating, causing much concern to both suppliers and users. In recent years, in addition to general groundwater quality aspects, public attention has been focused on groundwater contamination by hazardous industrial wastes, by leachate from landfills, by oil spills, and by agricultural activities such as the use of fertilizers, pesticides, and herbicides, and by radioactive waste in repositories located in deep geological formations, to mention some of the most acute contamination sources. In all these cases, management means making decisions to achieve goals without violating specified constraints. In order to enable the planner, or the decision maker, to compare alternative modes of action and to ensure that the constraints are not violated, a tool is needed that will provide information about the response of the system (the aquifer) to various alternatives.

Ground-water Data-collection Protocols and Procedures for the National Water-Quality Assessment Program

Author : Michael T. Koterba
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Ground-water Data-collection Protocols and Procedures for the National Water-Quality Assessment Program by : Michael T. Koterba

Download or read book Ground-water Data-collection Protocols and Procedures for the National Water-Quality Assessment Program written by Michael T. Koterba and published by . This book was released on 1998 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Assessment of Groundwater Pollution Risks in Production Wells with RESPOND

Author : B. Raterman
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Assessment of Groundwater Pollution Risks in Production Wells with RESPOND by : B. Raterman

Download or read book Assessment of Groundwater Pollution Risks in Production Wells with RESPOND written by B. Raterman and published by . This book was released on 2006 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drinking water companies need insight into the future quality of abstracted groundwater. Activities on the surface level linked to land use mainly determine the quality of groundwater. There is fundamental uncertainty about the quality of groundwater that will be pumped in the future because measurements of groundwater quality at monitoring wells only cover a very small part of a capture zone. RESPOND (Risk Evaluation of Soil Pollution for ProductiON of Drinking water) is a recently developed modeling instrument by which risks of groundwater pollution can be assessed. This instrument can be applied efficiently within an ArcGIS ModelBuilder environment, coupled with groundwater flow and transport models in which dilution, retardation and attenuation are taken into account. RESPOND facilitates the identification of effective risk-reducing measures such as changing land use in the capture zone or selection of additional monitoring sites.

Uncertainty Modeling Health Risk Assessment and Groundwater Resources Management

Author : Elcin Kentel
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (713 download)

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Book Synopsis Uncertainty Modeling Health Risk Assessment and Groundwater Resources Management by : Elcin Kentel

Download or read book Uncertainty Modeling Health Risk Assessment and Groundwater Resources Management written by Elcin Kentel and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncertainty modeling in health risk assessment and groundwater resources a management Elcin Kentel 339 Pages Directed by Dr. M. Mustafa Aral Real-world problems especially the ones that involve natural systems are complex and they are composed of many non-deterministic components. Uncertainties associated with these non-deterministic components may originate from randomness or from imprecision due to lack of information. Until recently, uncertainty, regardless of its nature or source has been treated by probability concepts. However, uncertainties associated with real-world systems are not limited to randomness. Imprecise, vague or incomplete information may better be represented by other mathematical tools, such as fuzzy set theory, possibility theory, belief functions, etc. New approaches which allow utilization of probability theory in combination with these new mathematical tools found applications in various engineering fields. Uncertainty modeling in human health risk assessment and groundwater resources management areas are investigated in this thesis. In the first part of this thesis two new approaches which utilize both probability theory and fuzzy set theory concepts to treat parameter uncertainties in carcinogenic risk assessment are proposed. As a result of these approaches fuzzy health risks are generated. For the fuzzy risk to be useful for practical purposes its acceptability with respect to compliance guideline has to be evaluated. A new fuzzy measure, the risk tolerance measure, is proposed for this purpose. The risk tolerance measure is a weighed average of the possibility and the necessity measures which are currently used for decision making purposes. In the second part of this thesis two decision making frameworks are proposed to determine the best groundwater resources management strategy in the Savannah region, Georgia. Groundwater resources management problems, especially ones in the coastal areas are complex and require treatment of various uncertain inputs. The first decision making framework proposed in this study is composed of a coupled simulation-optimization model followed by a fuzzy multi-objective decision making approach while the second framework includes a groundwater flow model in which the parameters of the flow equation are characterized by fuzzy numbers and a decision making approach which utilizes the risk tolerance measure proposed in the first part of this thesis.

Risk Assessment and Uncertainty Analysis in Groundwater Modelling

Author : Husam Musa Baalousha
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (722 download)

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Book Synopsis Risk Assessment and Uncertainty Analysis in Groundwater Modelling by : Husam Musa Baalousha

Download or read book Risk Assessment and Uncertainty Analysis in Groundwater Modelling written by Husam Musa Baalousha and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Risk, Reliability and Sustainable Remediation in the Field of Civil and Environmental Engineering

Author : Thendiyath Roshni
Publisher : Elsevier
ISBN 13 : 0323856993
Total Pages : 554 pages
Book Rating : 4.3/5 (238 download)

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Book Synopsis Risk, Reliability and Sustainable Remediation in the Field of Civil and Environmental Engineering by : Thendiyath Roshni

Download or read book Risk, Reliability and Sustainable Remediation in the Field of Civil and Environmental Engineering written by Thendiyath Roshni and published by Elsevier. This book was released on 2022-03-22 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Risk, Reliability and Sustainable Remediation in the Field of Civil and Environmental Engineering illustrates the concepts of risk, reliability analysis, its estimation, and the decisions leading to sustainable development in the field of civil and environmental engineering. The book provides key ideas on risks in performance failure and structural failures of all processes involved in civil and environmental systems, evaluates reliability, and discusses the implications of measurable indicators of sustainability in important aspects of multitude of civil engineering projects. It will help practitioners become familiar with tolerances in design parameters, uncertainties in the environment, and applications in civil and environmental systems. Furthermore, the book emphasizes the importance of risks involved in design and planning stages and covers reliability techniques to discover and remove the potential failures to achieve a sustainable development. Contains relevant theory and practice related to risk, reliability and sustainability in the field of civil and environment engineering Gives firsthand experience of new tools to integrate existing artificial intelligence models with large information obtained from different sources Provides engineering solutions that have a positive impact on sustainability

A GIS-based Method for Groundwater Modelling

Author : Janmaizatulriah Jani
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (855 download)

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Book Synopsis A GIS-based Method for Groundwater Modelling by : Janmaizatulriah Jani

Download or read book A GIS-based Method for Groundwater Modelling written by Janmaizatulriah Jani and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwater is important and precious freshwater found under the earth's surface. Groundwater is used for human consumption: for drinking, farming and for maintaining surface water system (rivers) especially during low flow periods. For effective groundwater management, quantitative and qualitative status of groundwater is usually assessed using various groundwater models. These models (for example numerical models) are capable of modelling complex and heterogeneous groundwater conditions. However, due to the requirement of extensive and detailed ground water data, these models are not suitable to be applied in all groundwater systems (major and minor aquifers). Therefore, scientific studies in areas of insignificant groundwater resource (minor aquifers) have been underplayed. However, since all groundwater bodies are significantly important, a new groundwater model was developed in this study. GIS functionality was explored and a GIS-based groundwater model was developed using minimal and accessible input data. GIS was used to represent the subsurface geology particularly the aquifer system and to model groundwater flow. The first model, a GIS based geological model was tested by reconstructing the geology map for the Slea catchment, in the United Kingdom and thickness of the Lincolnshire Limestone aquifer was predicted. The advantage of this model is its capability in predicting an aquifer's thickness without referring to point data like those obtained from boreholes. Then, the second model that is based on topographical and groundwater resistance analysis was used to model natural ground water discharge. Although there is discrepancy between estimated and measured spring discharge, the model has confirmed the usefulness of using GIS tool in modelling groundwater exploring minimal input data and basic modelling procedures. The developed models were not a replacement for numerical groundwater models. However, they would be useful to screen ground water status especially in areas that lack ground water data.