Download or read book Rate of Recharge to a Heterogeneous Aquifer written by Manrico Delcore and published by . This book was released on 1985 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Anthropogenic Aquifer Recharge written by Robert G. Maliva and published by Springer. This book was released on 2019-05-07 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is an overview of the diversity of anthropogenic aquifer recharge (AAR) techniques that use aquifers to store and treat water. It focusses on the processes and the hydrogeological and geochemical factors that affect their performance. This book is written from an applied perspective with a focus of taking advantage of global historical experiences, both positive and negative, as a guide to future implementation. Most AAR techniques are now mature technologies in that they have been employed for some time, their scientific background is well understood, and their initial operational challenges and associated solutions have been identified. However, opportunities exist for improved implementation and some recently employed and potential future innovations are presented. AAR which includes managed aquifer recharge (MAR) is a very important area of water resources management and there is no recent books that specifically and comprehensively addresses the subject.

Download or read book Regional Ground Water Quality written by William M. Alley and published by John Wiley & Sons. This book was released on 1993-06-15 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground water serves as the main source of drinking water for 50% of the United States as a whole—and for 97% of rural populations, in particular. In addition to public concern with point sources of contamination, such as landfills and hazardous waste disposal sites, current attention has now come to focus on the overall quality of ground-water resources. Regional Ground-Water Quality offers the first detailed guidance for conducting ground-water quality investigations in a regional context. This exceptional volume combines hydrogeologic and geochemical principles, as well as statistical principles, within a unique conceptual framework that helps readers produce efficient, meaningful, and successful ground-water assessments. Regional Ground-Water Quality will be a valuable resource when first approaching a regional-scale study and when designing specific regional-scale studies. Throughout the book, topics emphasize the value of studying regional ground-water quality at multiple spatial and temporal scales. Up-to-date coverage of essential processes and methodologies includes: multi-scale design concepts for regional ground-water quality studies the fate and transport of organic and inorganic materials, including nitrates, pesticides, pathogens, acid precipitation, natural radionuclides, saltwater intrusion, and problems in karst aquifers basic concepts of organic and inorganic chemistry a review of environmental isotopes and geochemical modeling statistical concepts for ground-water quality surveys and geostatistical analysis the effects of surface-water/ground-water interactions on ground-water quality the relationship between ground-water quality and land use regional geochemistry principles Readers will be brought completely up to date with the latest research in ground-water assessments, such as novel methods for dating young ground water, including the use of CFCs, tritium/helium-3, and krypton-85. The book also examines the uses of organic compounds as time and source markers, ground-water vulnerability analyses, applications of subsurface microbiology at the regional scale, and design of well-water surveys. Invaluable case studies drawn from international projects graphically demonstrate concepts discussed in the book. These case studies describe successful regional ground-water assessment efforts conducted in various areas and include a look at the uses and limitations of existing ground-water quality data. A first-of-its-kind resource, Regional Ground-Water Quality will be essential reading for scientists and engineers in hydrology, water resources, agricultural sciences, and environmental sciences. It will also be of interest to engineers and R&D personnel in government, industry, and private consulting, as well as to professionals involved with the design and interpretation of studies.

Download or read book Preliminary Assessment of Potential Well Yields and the Potential for Artificial Recharge of the Elm and Middle James Aquifers in the Aberdeen Area South Dakota written by Patrick Jay Emmons and published by . This book was released on 1987 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Groundwater Depletion in the United States 1900 2008 written by Leonard F Konikow and published by CreateSpace. This book was released on 2014-08-01 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: A natural consequence of groundwater withdrawals is the removal of water from subsurface storage, but the overall rates and magnitude of groundwater depletion in the United States are not well characterized. This study evaluates long- term cumulative depletion volumes in 40 separate aquifers or areas and one land use category in the United States, bringing together information from the literature and from new analy- ses. Depletion is directly calculated using calibrated ground- water models, analytical approaches, or volumetric budget analyses for multiple aquifer systems. Estimated groundwater depletion in the United States during 1900-2008 totals approx- imately 1,000 cubic kilometers (km3). Furthermore, the rate of groundwater depletion has increased markedly since about 1950, with maximum rates occurring during the most recent period (2000-2008) when the depletion rate averaged almost 25 km3 per year (compared to 9.2 km3 per year averaged over the 1900-2008 timeframe).

Download or read book Ground water Flow and Numerical Simulation of Recharge from Streamflow Infiltration Near Pine Nut Creek Douglas County Nevada written by Douglas K. Maurer and published by . This book was released on 2002 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantifying Water Quality Changes During Managed Aquifer Recharge in a Physically and Chemically Heterogeneous Aquifer written by Carlos Descourvieres Joiko and published by . This book was released on 2011 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] In many parts of the world, depleting water resources and their management are recognised as a fundamental problem. The impact of this problem is enhanced by seasonal as well as long-term imbalances between fresh water supply and demand. Managed aquifer recharge (MAR) is increasingly used to mitigate these imbalances. MAR operations often involve the injection of oxic waters into anoxic media, which will generally trigger a wide range of mineral dissolution/precipitation, ion exchange and complexation reactions that can alter the water quality. However, while the influence of physical heterogeneity on MAR processes is increasingly recognised, little attention has been devoted to the superposed impact of physical and geochemical heterogeneity on water quality. A comprehensive series of experiments, at both laboratory and field scale, were conducted in the context of a pilot aquifer storage and recovery (ASR) implementation in Perth, Western Australia, to develop a quantitative understanding of the coupled physical and hydrogeochemical processes that affect the quality of the recovered water. In the first part of this study a detailed aquifer characterisation was carried using high-resolution sediment sampling. The minerals that were likely to act as reductants for the oxygen introduced by the injection water and participate in the redox chemical reactions during a MAR operation were identified and quantified. These minerals included: pyrite, sedimentary organic matter (SOM), Fe(II)-carbonates and Fe(II)-silicates. The sediment characterisation was used in conjunction with incubation experiments to investigate correlations between reactive and physical parameters of the aquifer material. Subsequently, long-term batch and column experiments were performed to quantify the kinetics of the reactive processes that emerge under MAR conditions. The different contributions of the reductant and of the different lithologies to the oxygen consumption measured during sediment incubation experiments were quantified. This geochemical characterisation showed that grain size fractionation and hydraulic sorting were the main controlling processes that determined the geochemical signature of the sediments. The aerobic reductive capacity, as defined by the rate of oxygen consumption, was found to be dependant on the reductant concentration but also on the variability in reductant composition and availability...

Download or read book Hydraulics of Artificial Recharge in Non homogeneous Formations written by Keith R. Marmion and published by . This book was released on 1962 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geological Survey Water supply Paper written by and published by . This book was released on 1976 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Water supply Paper written by and published by . This book was released on 1982 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamentals of Ground water Modeling written by Jacob Bear and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Reclamation Technologies for Safe Managed Aquifer Recharge written by Christian Kazner and published by IWA Publishing. This book was released on 2012-04-14 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part of Groundwater Set - Buy all six books and save over 30% on buying separately! Water Reclamation Technologies for Safe Managed Aquifer Recharge has been developed from the RECLAIM WATER project supported by the European Commission under Thematic Priority 'Global Change and Ecosystems' of the Sixth Framework Programme. Its strategic objective is to develop hazard mitigation technologies for water reclamation providing safe and cost effective routes for managed aquifer recharge. Different treatment applications in terms of behaviour of key microbial and chemical contaminants are assessed. Engineered as well as natural treatment trains are investigated to provide guidance for sustainable MAR schemes using alternative sources such as effluent and stormwater. The technologies considered are also well suited to the needs of developing countries, which have a growing need of supplementation of freshwater resources. A broad range of international full-scale case studies enables insights into long-term system behaviour, operational aspects, and fate of a comprehensive number of compounds and contaminants, especially organic micropollutants and bulk organics. Water Reclamation Technologies for Safe Managed Aquifer Recharge depicts advances in water reclamation technologies and aims to provide new process combinations to treat alternative water sources to appropriate water quality levels for sustainable aquifer recharge. Editors: Christian Kazner, RWTH Aachen University, Germany, Thomas Wintgens, University of Applied Sciences and Arts Northwestern Switzerland, Peter Dillon, CSIRO, Australia

Download or read book Characterization and Monitoring of Managed Aquifer Recharge written by Chloe Mawer and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Over a fifth of the world's population lives in an area where there is not enough water to meet demand. However, the problem is not that there is not enough water in the world but that there is not enough of it at either the right time, location or quality. Managed aquifer recharge and recovery (MARR), the intentional act of recharging water into the subsurface for later use, is a water management tool that can help to balance water supply and demand in time, while improving the water's quality. By infiltrating water through the ground via recharge ponds into an aquifer and storing it there until it is needed, MARR has huge potential in the future for mitigating water management challenges. However, for MARR systems to be adopted at a wide scale, better tools are needed to ensure that a system is successful. I define in this dissertation MARR success to mean a project is capable of infiltrating a provided volume of water over a given time period, recovering all of it when desired, and improving its quality to a set level. Actions to meet these objectives must be taken during both project design and operations. The research in this thesis focuses on improving MARR success post-construction. I suggest that one approach for improving MARR success is to define an optimal range of infiltration rates needed for a given recharge pond to maximize the amount of water infiltrated, recovered and cleaned and to monitor in real-time infiltration rates across the pond to ensure they fall within this range. The goal of this research was to advance the knowledge and tools available for carrying out this characterization and monitoring, primarily through the use of electrical resistivity imaging (ERI), which, as is discussed, is well suited for use in the unsaturated zone. I do so by developing MARR specific methods as well as by advancing our understanding of the relationship between hydrologic and electrical properties that can be used in contexts outside of MARR. The contributions of this thesis fall into four categories: 1) development of methods for characterizing the unsaturated zone in order to define optimal infiltration rates using ERI, 2) development of methods for monitoring infiltration, 3) a discovery of a new relationship relating electrical conductivity in the unsaturated zone to hydraulic conductivity, and 4) contribution to understanding of MARR infiltration processes. I develop two methods for using electrical resistivity data to estimate saturated hydraulic conductivity and unsaturated soil properties and demonstrate their use with synthetic data sets. The first method uses a vertical electrical conductivity profile, already inverted for from geophysical data. However, by sequentially performing a hydrologic and geophysical inversion, features can be lost and in the second method, I address this by developing a coupled geophysical-hydrologic inversion method. The method takes as its input the electrical resistivity data obtained in the field and estimates saturated hydraulic conductivity, which can be used to define an upper bound on infiltration rates for optimal MARR operations. The method is unique because it uses heat transport modeling to more accurately estimate the change of fluid conductivity throughout the soil profile due to diurnal and long-term temperature fluctuations, which in other methods is assumed to be known or to not change. It also takes advantage of a new inversion method, the principal component geostatistical approach (PCGA), which reduces the number of forward model runs needed to estimate the Jacobian matrix during inversion. Monitoring infiltration requires real-time information. Therefore, direct relationships between data and desired quantities, such as infiltration rates are key. I introduce in this dissertation the concept of local infiltration efficiency, which can be an alternative metric to infiltration rate for monitoring recharge. I show that with both distributed temperature sensor (DTS) data and electrical resistivity (ER) data that local infiltration efficiency is a more robust metric to monitor because it does not rely on parameters that are difficult to estimate. The metric also clearly shows how a given location is performing over time, allowing for the identification of clogging and other processes that need to be addressed. Next, I demonstrate that even during transient infiltration rates, the vertical pressure gradient within the vadose zone is negligible, which allows infiltration and unsaturated flow rates to be estimated as hydraulic conductivity. This simplification becomes valuable for monitoring infiltration rates because we can relate electrical conductivity, which can be measured in the field, to hydraulic conductivity. I first show how this can be done by combining Archie's equation, which relates electrical conductivity to saturation and a van Genuchten equation, which relates saturation to hydraulic conductivity. Such formulation then provides a direct way of estimating infiltration rates using a single electrical conductivity measurement and a few soil specific parameters and does not require a cumbersome hydrologic inversion. Since, in soils with negligible surface conduction, electrical conductivity and hydraulic conductivity are both controlled by water content and the geometry of the pore space, I explore through pore-scale numerical experiments the relationship between these two quantities. I found that relative hydraulic conductivity (hydraulic conductivity divided by saturated hydraulic conductivity) and relative electrical conductivity (electrical conductivity divided by saturated electrical conductivity) are related by a power law. This finding provides a new petrophysical relationship relating electrical conductivity to a hydrologic parameter of interest. It reduces the parameters necessary to relate hydraulic and electrical conductivity done previously through the van Genuchten and Archie equations and allows for a relatively simple method for estimating infiltration rate directly from electrical conductivity measurement. Lastly, a field experiment was performed at a recharge pond outside Denver, Colorado where DTS and ER data were taken. These data were used to demonstrate the methods and relationships discussed in this thesis. In doing so, some processes were observed. First, I quantified the effects of heterogeneous soil properties on infiltration behavior. The field data showed that infiltration rates to varied over an order of magnitude across the basin and I showed that this heterogeneity caused 78 percent of the influent to infiltrate through 50 percent of the pond. This finding shows the importance of spatial monitoring of infiltration rates because a pond-average infiltration rate could imply that infiltration is slow enough for the water to reach a minimum residence time in the vadose zone and not cause lateral loss of flow but in actual fact a large portion of the water could be infiltrating at a rate much faster than optimal. Additionally, through the estimation of local infiltration efficiency across the basin over time, clogging behavior within the pond was observed. It was seen that the east side decreased in infiltration efficiency faster and more significantly than the west side. This decrease in efficiency on the east side was ascribed to the development of a clogging layer, which was visible on the east side of the pond after the infiltration event but not the west. This finding shows that clogging develops faster across more permeable portions of a pond bottom, which could be due to the fact that more water is moving to these areas, which delivers nutrients that cause bacteria and algae growth and clogging particulates. Additionally, infiltration rates are only limited through soils with a hydraulic conductivity higher than the clogging layer above, so clogging will decrease infiltration rates and efficiency in higher permeability soils before and to a greater extent than in lower permeability soils.

Download or read book Water resources Investigations Report written by and published by . This book was released on 2002 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Professional Paper written by Suzanne Smith Paschke and published by . This book was released on 1984 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Handbook of Groundwater Engineering Third Edition written by John H. Cushman and published by CRC Press. This book was released on 2016-11-25 with total page 1726 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition adds several new chapters and is thoroughly updated to include data on new topics such as hydraulic fracturing, CO2 sequestration, sustainable groundwater management, and more. Providing a complete treatment of the theory and practice of groundwater engineering, this new handbook also presents a current and detailed review of how to model the flow of water and the transport of contaminants both in the unsaturated and saturated zones, covers the protection of groundwater, and the remediation of contaminated groundwater.