Download or read book Selection of Single Well Hydraulic Test Methods for Monitoring Wells written by JB. Hankins and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Single-well hydraulic tests yield order-of-magnitude estimates of the hydraulic conductivity of aquifer materials around a single well. Although the single-well tests are less accurate than multiple-well pumping tests, they are often an attractive option when a quick, inexpensive estimate of hydraulic conductivity is required. There are three basic methods for determining the hydraulic conductivity from a single well: • Slug test--This method is also commonly referred to as a falling-head test or bailer test. It involves the instantaneous addition or removal of a given volume (slug) of water from a monitoring well with measurements of the recovery collected over a period of time. • Constant-head test--This method involves a measured discharge of water into a monitoring well to maintain a constant water level within the well. The method is more commonly used where the aquifer materials have moderate to high hydraulic conductivity values. • Single-well pumping test--This method is no different from an aquifer pumping test except that water level measurements are collected from just the pumped (monitoring) well. The pumping rate is kept constant throughout the test, and water levels are measured over a period of time.
Download or read book Analysis and Evaluation of Pumping Test Data written by G. P. Kruseman and published by . This book was released on 1990 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ground Water and Vadose Zone Monitoring written by David Nielsen and published by ASTM International. This book was released on 1990 with total page 310 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 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Fractures and Fluid Flow written by National Research Council and published by National Academies Press. This book was released on 1996-08-27 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific understanding of fluid flow in rock fracturesâ€"a process underlying contemporary earth science problems from the search for petroleum to the controversy over nuclear waste storageâ€"has grown significantly in the past 20 years. This volume presents a comprehensive report on the state of the field, with an interdisciplinary viewpoint, case studies of fracture sites, illustrations, conclusions, and research recommendations. The book addresses these questions: How can fractures that are significant hydraulic conductors be identified, located, and characterized? How do flow and transport occur in fracture systems? How can changes in fracture systems be predicted and controlled? Among other topics, the committee provides a geomechanical understanding of fracture formation, reviews methods for detecting subsurface fractures, and looks at the use of hydraulic and tracer tests to investigate fluid flow. The volume examines the state of conceptual and mathematical modeling, and it provides a useful framework for understanding the complexity of fracture changes that occur during fluid pumping and other engineering practices. With a practical and multidisciplinary outlook, this volume will be welcomed by geologists, petroleum geologists, geoengineers, geophysicists, hydrologists, researchers, educators and students in these fields, and public officials involved in geological projects.
Download or read book A Guide to the Selection of Materials for Monitoring Well Construction and Ground water Sampling written by Michael J. Barcelona and published by . This book was released on 1983 with total page 92 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 1989 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 A Guide to the Selection of Groundwater and Well Hydraulics Test Procedures and Analysis written by Craig R. Bagley and published by . This book was released on 1987 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Subsurface Characterization and Monitoring Techniques written by J. Russell Boulding and published by DIANE Publishing. This book was released on 1996-07 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides information on where to go to find detailed guidance on how to use these techniques. Covers: remote sensing & surface geophysical methods; drilling & solids sampling methods; geophysical logging of boreholes; aquifer test methods; ground water sampling methods; Vadose Zone (VZ) hydrologic properties: water state, infiltration, conductivity, & flux; VZ water budget characterization methods; VZ soil-solute/gas sampling & monitoring methods; & chemical field screening & analytical methods. Charts, tables, graphs & drawings.
Download or read book The Design Performance and Analysis of Slug Tests written by James Johnson Butler, Jr. and published by CRC Press. This book was released on 2019-11-25 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: The slug test can provide valuable information for hydrogeologic investigations ranging from assessments of sites of groundwater contamination to the monitoring of well deterioration through time. Inappropriate procedures in one or more phases of a test program, however, can introduce considerable error into the resulting parameter estimates. The Design, Performance, and Analysis of Slug Tests, Second Edition remedies that problem by explaining virtually all there is to know regarding the design, performance, and analysis of slug tests. The first edition has become the standard reference for all aspects of slug tests; this revised edition updates the earlier material and expands the topical coverage with new developments that have come to the fore in the intervening years between editions. Features: Describes and demonstrates the eight key steps for the performance and analysis of slug tests Presents new methods for the analysis of tests in unconfined aquifers and in highly permeable settings Expands topical coverage of LNAPL baildown tests and slug tests in small diameter wells Includes numerous flow charts that illustrate easy-to-use strategies for selection of analysis methods, and field examples demonstrate how each method should be used to get the most out of test data Offers straightforward practical guidelines that summarize the major points of each chapter Written for practicing groundwater consultants and engineers, The Design, Performance, and Analysis of Slug Tests, Second Edition will enable readers to get more reliable information from slug tests and increase the utility of this widely-used field method.
Download or read book Water resources Investigations Report written by and published by . This book was released on 2002 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practical Handbook of Soil Vadose Zone and Ground Water Contamination written by J. Russell Boulding and published by CRC Press. This book was released on 2016-04-19 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: A synthesis of years of interdisciplinary research and practice, the second edition of this bestseller continues to serve as a primary resource for information on the assessment, remediation, and control of contamination on and below the ground surface. Practical Handbook of Soil, Vadose Zone, and Ground-Water Contamination: Assessment, Prev
Download or read book Hydrogeology and Sources of Recharge to the Buffalo and Wahpeton Aquifers in the Southern Part of the Red River of the North Drainage Basin West central Minnesota and Southeastern North Dakota written by Michael Schoenberg and published by . This book was released on 1998 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abiotic in Situ Technologies for Groundwater Remediation Conference written by and published by . This book was released on 2000 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Two Methods to Detect Poorly Sealed Monitoring Wells Using Pumping Test Data in a Confined Aquifer written by Robert P. Chapuis and published by . This book was released on 2018 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A correctly installed monitoring well (MW) has its riser pipe sealed against the borehole wall. When a MW is poorly installed, there is some vertical leakage close to the riser pipe, which creates a hydraulic short circuit (HSC). A static water level is measured in the pipe, but it is not the piezometric level in the aquifer, which is unknown. The piezometric error is the difference between the piezometric level and the static level in the pipe. It yields other errors in determining flow directions, travel times, and well capture areas. The groundwater sampled in the monitored aquifer may be viewed as polluted, whereas it is locally polluted by the faulty MW. This article deals with pumping tests in confined aquifers, for which a poorly sealed MW yields biased drawdown and recovery data. A few solutions to detect an HSC have been proposed, using either a slug test or a pumping test coupled with a tracer test. This article presents two new solutions to detect an HSC: they provide first the piezometric error and then the correct values for drawdown data. The data of a pumping test near Moncton, NB, are used to illustrate the two solutions. They show also that the HSC detection helps to solve previous inconsistencies between different sets of values for transmissivity, T, and storativity, S, as obtained by usual methods for pumping and recovery when short-circuiting is ignored or unsuspected.
