Download or read book Enhanced Characterization and Representation of Flow Through Karst Aquifers written by Scott L. Painter and published by American Water Works Association. This book was released on 2006 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research report summaries and details the first year of work on a multi-year karst modeling project organized to develop enhanced groundwater modeling capabilities that can be used to effectively manage karst aquifers. Discussed are the three key considerations for modeling karst systems were identified: representation of conduits in flow models, representation of flow dynamics in conduits, and representation of partially filled conduits and the numerical experiments used to identify the limitations and advantages of the three general representations of conduits within groundwater models. A new dual-conductivity MODFLOW-2000 package (DCM) was developed for testing the dual-conductivity approach. A turbulence model was added, the software was validated using simple benchmark problems, and code documentation was completed. Simultaneous demonstrations showed that the modeling tool can be successfully applied in complex applications.

Download or read book Karst Aquifers Characterization and Engineering written by Zoran Stevanović and published by Springer. This book was released on 2015-02-25 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical training guidebook makes an important contribution to karst hydrogeology. It presents supporting material for academic courses worldwide that include this and similar topics. It is an excellent sourcebook for students and other attendees of the International Karst School: Characterization and Engineering of Karst Aquifers, which opened in Trebinje, Bosnia & Herzegovina in 2014 and which will be organized every year in early summer. As opposed to more theoretical works, this is a catalog of possible engineering interventions in karst and their implications. Although the majority of readers will be professionals with geology/hydrogeology backgrounds, the language is not purely technical making it accessible to a wider audience. This means that the methodology, case studies and experiences presented will also benefit water managers working in karst environments.

Download or read book Scientific Investigations Report written by Sharon E. Kroening and published by . This book was released on 2004 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of Groundwater Flow and Vulnerability Assessment of Karstic Aquifers Development of a Travel Time Based Approach and Application to the Tanour and Rasoun Spring Catchment Ajloun NW Jordan written by Ibraheem Hamdan and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the karst aquifer response to precipitation and contaminants transport, especially in arid to semi-arid areas, is a very important issue and a challenge due to the unique and heterogeneous characteristics of karst aquifers. Monitoring the water travel time through karst aquifers and the response to precipitation events can provide good information about the characteristics of water and pollutant flow through the aquifer. This can subsequently help provide proper protection for the aquifer against pollution to sustain the water resources for the coming generations. Within this ...

Download or read book The Edwards Aquifer written by John M. Sharp Jr. and published by Geological Society of America. This book was released on 2019-11-04 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: "One of the world's great karstic aquifer systems, the Edwards aquifer system supplies water for more than 2 million people and for agricultural, municipal, industrial, and recreational uses. This volume reviews the current state of knowledge, current and emerging challenges to wise use of the aquifer system, and some technologies that must be adopted to address these challenges"--

Download or read book Aquifer Characterization Techniques written by Robert G. Maliva and published by Springer. This book was released on 2016-05-26 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an overview of techniques that are available to characterize sedimentary aquifers. Groundwater flow and solute transport are strongly affected by aquifer heterogeneity. Improved aquifer characterization can allow for a better conceptual understanding of aquifer systems, which can lead to more accurate groundwater models and successful water management solutions, such as contaminant remediation and managed aquifer recharge systems. This book has an applied perspective in that it considers the practicality of techniques for actual groundwater management and development projects in terms of costs, technical resources and expertise required, and investigation time. A discussion of the geological causes, types, and scales of aquifer heterogeneity is first provided. Aquifer characterization methods are then discussed, followed by chapters on data upscaling, groundwater modelling, and geostatistics. This book is a must for every practitioner, graduate student, or researcher dealing with aquifer characterization .

Download or read book Methods in Karst Hydrogeology written by Nico Goldscheider and published by CRC Press. This book was released on 2014-04-21 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of investigating karstified aquifers lies in their significance as a major source of drinking water. This book describes methods that are basic to all hydrogeological studies, such as hydraulic investigations, hydrochemistry, geophysics, isotope chemistry and modelling, but with the emphasis placed on their application to karst syste

Download or read book Review of the Edwards Aquifer Habitat Conservation Plan written by National Research Council and published by National Academies Press. This book was released on 2015-06-10 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Edwards Aquifer in south-central Texas is the primary source of water for one of the fastest growing cities in the United States, San Antonio, and it also supplies irrigation water to thousands of farmers and livestock operators. It is also is the source water for several springs and rivers, including the two largest freshwater springs in Texas that form the San Marcos and Comal Rivers. The unique habitat afforded by these spring-fed rivers has led to the development of species that are found in no other locations on Earth. Due to the potential for variations in spring flow caused by both human and natural causes, these species are continuously at risk and have been recognized as endangered under the federal Endangered Species Act (ESA). In an effort to manage the river systems and the aquifer that controls them, the Edwards Aquifer Authority and stakeholders have developed a Habitat Conservation Plan (HCP). The HCP seeks to effectively manage the river-aquifer system to ensure the viability of the ESA-listed species in the face of drought, population growth, and other threats to the aquifer. The National Research Council was asked to assist in this process by reviewing the activities around implementing the HCP. Review of the Edwards Aquifer Habitat Conservation Plan: Report 1 is the first stage of a three-stage study. This report reviews the scientific efforts that are being conducted to help build a better understanding of the river-aquifer system and its relationship to the ESA-listed species. These efforts, which include monitoring and modeling as well as research on key uncertainties in the system, are designed to build a better understanding of how best to manage and protect the system and the endangered species. Thus, the current report is focused specifically on a review of the hydrologic modeling, the ecological modeling, the water quality and biological monitoring, and the Applied Research Program. The fundamental question that Review of the Edwards Aquifer Habitat Conservation Plan: Report 1 addresses is whether the scientific initiatives appropriately address uncertainties and fill knowledge gaps in the river-aquifer system and the species of concern. It is hoped that the successful completion of these scientific initiatives will ultimately lead the Edwards Aquifer Authority to an improved understanding of how to manage the system and protect these species.

Download or read book Water in Karst written by Neven Kresic and published by McGraw Hill Professional. This book was released on 2012-10-06 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete guide to the management and restoration of water in karst environments Written by the co-chair of the Karst Commission of the International Association of Hydrogeologists, this book addresses the unique challenges related to the characterization, management, and protection of karst aquifers, which are present on all continents and numerous oceanic islands. Water in Karst describes karst hydrogeology and hydrology, surface water–groundwater interactions, site investigation, data collection, delineation of drainage areas, groundwater extraction, regulatory issues, and water vulnerability and restoration. Predictive modeling methods and solutions to resource contamination and overexploitation are included. Photos, diagrams, and an eight-page color insert illustrate the concepts presented in this practical, comprehensive reference. WATER IN KARST COVERS: Karst aquifers Flow measurements and analysis Drainage areas in karst General principles of water management Regulations and education Predictive models Floods, droughts, and climate change Groundwater extraction Engineering regulation of karst aquifers and springs Vulnerability of water in karst Restoration of water in karst

Download or read book Hydrogeologic Characterization in a Karst Groundwater System in Lititz Lancaster County Pennsylvania written by Eric W. Roman and published by . This book was released on 2000 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Principles of Karst Hydrogeology written by Antonio Pulido-Bosch and published by Springer Nature. This book was released on 2020-09-15 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the hydrogeology of karst systems, starting with the classifications from the applied point of view, and then the hydraulic parameters (porosity, permeability, and transmissivity). It also addresses the karstification process, its resulting forms, and their hydrogeological significance. Besides, the author describes possible models of karstic aquifers and their characterization. The book also explains the classical methods for analyzing hydrograms of karst springs and deepens the analysis of time series, as a preliminary phase to the mathematical simulation of karst aquifers. Finally, it introduces the hydrogeochemical characterization of karst, of the processes involved as well as the possible pollution and protection of karst aquifers. This book is intended to be of interest for professionals in hydrogeology as well as graduate and undergraduate students.

Download or read book Hydrogeological Characterization of Baseflow to Jacob s Well Spring Hays County Texas written by Sarah Cain Davidson and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jacob's Well is a karst spring that discharges from the Trinity aquifer in central Texas. Ongoing development and increased groundwater pumping in the area around the spring are thought to be impacting the volume of discharge at the spring--however, the source of spring discharge is poorly understood. The goals of this study are to characterize the chemistry of springflow and nearby surface waters and groundwaters and to identify the source or sources of water that contribute flow to the spring under low flow conditions. The spring is located in the Middle Trinity aquifer within the Lower Cretaceous Trinity Group in central Texas. The Trinity Group is composed of alternating terrestrial and marine deposits, with most groundwater flow occurring through secondary porosity in the carbonate units. The cave leading up to the spring consists of at least two water-filled conduits that have been mapped down into the Cow Creek Limestone and several hundred meters to the north and northwest of the spring outlet. Water samples and measurements of water levels and chemical field parameters were collected at 48 study sites representing stream, spring, and well waters over a 250-km2 area around the spring from May-September 2008. The area was in drought throughout this period and the results thus represent low flow conditions. Samples were analyzed for major and trace ions, organic and inorganic carbon, and isotopes of O, H, and Sr. Modeling using PHREEQC was used to calculate whether realistic phase changes in known aquifer minerals could explain the chemical differences between sampled waters along hypothesized flowpaths. Water levels indicate that groundwater flows generally to the southeast within the study area. Chemical analyses of water samples show three chemical types: (1) Ca-Mg-HCO3 waters, which make up all spring water, all surface water, and most ground water samples; (2) high TDS Ca-Mg-SO4 ground waters; and (3) high TDS Na-Mg-Ca-SO4 ground waters. Measured element concentrations, strontium isotope data, and geochemical modeling results indicate that the high TDS waters most likely come from the upper member of the Glen Rose Limestone downgradient from the spring (type 2) and from the Hosston Formation in the Lower Trinity aquifer (type 3). Physical and chemical properties of the sampled waters were used to define which well and stream samples might represent water within the area contributing to baseflow at the spring. Water samples taken from seven sites north and west of the spring were found to represent possible sources of springflow during the study period. These findings suggest the possibility of two distinct flowpaths connecting the aquifer to Jacob's Well: (1) flow to the southeast within the Cypress Creek watershed along the regional groundwater flow path estimated from water level measurements, and (2) flow to the east along fracture or conduit paths that cross the surface divide between the Upper Blanco River and Cypress Creek watersheds

Download or read book Environmental Tracers written by Trevor Elliot and published by MDPI. This book was released on 2018-10-08 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Environmental Tracers" that was published in Water

Download or read book The QTRACER Program for Tracer breakthrough Curve Analysis for Karst and Fractured rock Aquifers written by Malcolm S. Field and published by . This book was released on 1999 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrogeological and Environmental Investigations in Karst Systems written by Bartolomé Andreo and published by Springer Science & Business Media. This book was released on 2014-09-22 with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt: WATER RESOURCES AND ENVIRONMENT provides a detailed introduction to the full range of advanced, multidisciplinary techniques used in the study of water resources from understanding individual aquifers to the protection and management of water in a sustainable way, compatible with the preservation of the environment. Based on a masters course from UNESCO’s International Hydrological Program, this textbook is accompanied by color figures and graphics, illustrating clearly the content of the text and showing real examples from the field. Each chapter also contains a list of exercises and practical activities as well as case studies.

Download or read book Field Techniques for Estimating Water Fluxes Between Surface Water and Ground Water written by Donald O. Rosenberry and published by CreateSpace. This book was released on 2014-06-16 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in the use and development of our Nation's surface - and ground-water resources has increased significantly during the past 50 years. This work discusses field techniques for estimating water fluxes.

Download or read book IAEG AEG Annual Meeting Proceedings San Francisco California 2018 Volume 3 written by Abdul Shakoor and published by Springer. This book was released on 2018-08-25 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is one out six IAEG XIII Congress and AEG 61st Annual Meeting proceeding volumes, and deals with topics related to mining, aggregates, and karst. The theme of the IAEG/AEG Meeting, held in San Francisco from September 17-21, 2018, is Engineering Geology for a Sustainable World. The meeting proceedings analyze the dynamic role of engineering geology in our changing world. The meeting topics and subject areas of the six volumes are: Slope Stability: Case Histories, Landslide Mapping, Emerging Technologies; Geotechnical and Environmental Site Characterization; Mining, Aggregates, Karst; Dams, Tunnels, Groundwater Resources, Climate Change; Geologic Hazards: Earthquakes, Land Subsidence, Coastal Hazards, and Emergency Response; and Advances in Engineering Geology: Education, Soil and Rock Properties, Modeling.