Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Groundwater Surface Water Interaction Non Point Source Chloride Loading And Flow Generation Along An Urban River
Download Groundwater Surface Water Interaction Non Point Source Chloride Loading And Flow Generation Along An Urban River full books in PDF, epub, and Kindle. Read online Groundwater Surface Water Interaction Non Point Source Chloride Loading And Flow Generation Along An Urban River ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Groundwater-surface Water Interaction, Non-point Source Chloride Loading, and Flow Generation Along an Urban River by : Leanne J. Cantafio
Download or read book Groundwater-surface Water Interaction, Non-point Source Chloride Loading, and Flow Generation Along an Urban River written by Leanne J. Cantafio and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Groundwater-Surface Water Interactions by : Habil. Jörg Lewandowski
Download or read book Groundwater-Surface Water Interactions written by Habil. Jörg Lewandowski and published by MDPI. This book was released on 2020-12-10 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen a paradigm shift in our understanding of groundwater–surface water interactions: surface water and aquifers were long considered discrete, separate entities; they are now understood as integral components of a surface–subsurface continuum. This book provides an overview of current research advances and innovative approaches in groundwater–surface water interactions. The 20 research articles and 1 communication cover a wide range of thematic scopes, scales, and experimental and modelling methods across different disciplines (hydrology, aquatic ecology, biogeochemistry, and environmental pollution). The book identifies current knowledge gaps and reveals the challenges in establishing standardized measurement, observation, and assessment approaches. It includes current hot topcis with environmental and societal relevance such as eutrophication, retention of legacy, and emerging pollutants (e.g., pharmaceuticals and microplastics), urban water interfaces, and climate change impacts. The book demonstrates the relevance of processes at groundwater–surface water interfaces for (1) regional water balances and (2) quality and quantity of drinking water resources. As such, this book represents the long-awaited transfer of the above-mentioned paradigm shift in understanding of groundwater–surface water interactions from science to practice.
Book Synopsis A Rapid Method for Measuring Local Groundwater-surface Water Interactions and Identifying Potential Non-point Source Pollution Inputs to Rivers by :
Download or read book A Rapid Method for Measuring Local Groundwater-surface Water Interactions and Identifying Potential Non-point Source Pollution Inputs to Rivers written by and published by . This book was released on 2008 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agriculture in the Central Valley of California is a potential contributor of non-point source pollution to surface waters via the groundwater pathway. This work presents a relatively simple method and inexpensive apparatus for quantifying local groundwater discharge into rivers using heat as a tracer. Two transects along a known gaining reach of the Lower Merced River were used to evaluate the effectiveness of the groundwater discharge monitoring instruments, known as Temperature Javelins, over three months. In terms of fulfilling deployment objectives, Temperature Javelins proved to be low cost, easy to install, and yielded easily interpretable data related to groundwater-surface water discharges. Groundwater discharge velocities were found to vary over time seasonally and spatially (on a scale of meters). Discharges ranged from 0.1 to 6.8 cm/day with higher discharge velocities found on the northern side of the river. These values are consistent with previous values obtained at the same site using other methods. Corresponding hyporheic water samples were collected to investigate solute transport (specifically nitrate) by the discharging water. Nitrate concentrations ranged from nondetectable to 50 ppm in these samples, where elevated values appear to be associated with groundwater entering on the north side of the river. Elevated nitrate flow lines in the hyporheic zone correspond with high discharge areas and alternate with ammonium enriched columns and low groundwater discharge. It is hypothesized that nitrification cells are induced by groundwater-surface water interactions. Testing of this hypothesis is proposed as a subject of further research.
Book Synopsis Vertical Hydraulic Gradients and Groundwater-surface Water Interaction Under a Pre-restoration Piedmont Urban Stream, Charlotte NC by : Derick Russell Haydin
Download or read book Vertical Hydraulic Gradients and Groundwater-surface Water Interaction Under a Pre-restoration Piedmont Urban Stream, Charlotte NC written by Derick Russell Haydin and published by . This book was released on 2017 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hyporheic zone is a dynamic environment of physical and chemical gradients. These environmental gradients during groundwater-surface water interaction can be beneficial to aquatic life and water quality. Many urban streams have excess nutrient loading from sources such as development, agricultural runoff, and sewage. The hyporheic zone can be an area of mixing of groundwater and surface water, which can have distinct temperature and chemistry. Downwelling in the hyporheic zone increases hydrologic retention and can enhance biogeochemical processing (e.g. denitrification), with benefits for overall water quality. This research focuses on five short study reaches within Reedy Creek, a highly-incised urban forested stream in Charlotte, NC (watershed area 6.5 km2). The objective of this research is to characterize hydrologic exchange between the stream and subsurface prior to restoration scheduled to occur in winter 2017. From August 11, 2016 to February 3, 2017 groundwater-surface water interaction was examined in three ways at five stream cross-sections, 10 monitoring wells, and 87 piezometers in the Reedy Creek watershed. First, monitoring well water levels, stream water levels, and temperature have been measured since 2013. Second, vertical hydraulic gradient (VHG) measurements were taken at 25-75 cm deep piezometer nests (fall 2016-winter 2017) to quantify hyporheic exchange above and below geomorphic features in the streambed. Third, water quality samples were collected, and field measurements of pH, dissolved oxygen, and temperature were made in January-February 2017. To characterize groundwater that may discharge into the streams, slug testing was done on all piezometers and monitoring wells. Water samples were also collected from the monitoring wells located 5-60 meters from the stream channels. Slug testing showed that ~half of the piezometers installed were in impermeable sediments. The majority of piezometers that were in impermeable sediments were in the deeper sediments. Only two piezometer nests were hydrologically connected for all three piezometers. Slug testing data showed that the hyporheic zone in Reedy Creek is shallow within the sandy sediments that lay over impermeable clay and bedrock. The stream and well hydrographs indicate that riparian wells respond to precipitation and/or streamflow. VHG measurements suggest that a few piezometer nests had median downward VHGs at all depths. While downward VHGs (apparent downwelling) were detected at multiple locations, downward VHGs did not systematically occur where hypothesized (e.g. above debris features or above gravel bars). Other piezometer nests exhibited inconsistent VHGs with time and/or with depth (e.g. apparent downwelling at 25 cm and apparent upwelling at 50-75 cm). The data suggests these piezometers may have recorded stream flow variability interacting with subsurface heterogeneity. There are a few possibilities indicating from the VHG data. The stream could be perched on top of the impermeable sediments and bedrock, restricting any vertical exchange at these spots. Another possibility is that the groundwater at these spots is equilibrated with the streambed further downstream. The five study reaches experienced similar VHGs even though each study reach had their own unique number of geomorphic features. The median reach-wide downwelling VHGs for the reaches were from -0.01 to -0.06 for all five study reaches. Two study reaches, C1 and P1, were the only reaches that had a date of median reach-wide apparent upwelling VHG. The geomorphic features varied greatly in the extent of their VHGs. Both above debris jam and below a debris jam features had the largest hyporheic flux out of all features. Two of the five reaches had apparent perpendicular horizontal groundwater flow toward the stream while the three reaches apparently flowed away from the stream. Surface water and groundwater samples did not yield a great enough distinction between the two to be able to quantify the groundwater surface water interactions. Due to the high amounts of impermeable sediments and therefore low sub-streambed hydraulic conductivity, Reedy Creek has limited hyporheic exchange potential.
Book Synopsis Watershed Hydrology by : Vijay P. Singh
Download or read book Watershed Hydrology written by Vijay P. Singh and published by Allied Publishers. This book was released on 2003 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Documentation of a Computer Program (Streamlink) to Represent Direct-flow Connections in a Coupled Ground-water and Surface-water Model by : Eric D. Swain
Download or read book Documentation of a Computer Program (Streamlink) to Represent Direct-flow Connections in a Coupled Ground-water and Surface-water Model written by Eric D. Swain and published by . This book was released on 1993 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Urban Runoff Management by : Earl Shaver
Download or read book Fundamentals of Urban Runoff Management written by Earl Shaver and published by . This book was released on 2007 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Riverbank Filtration written by C. Ray and published by Springer Science & Business Media. This book was released on 2006-03-01 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chittaranjan Ray, Ph. D. , P. E. University of Hawaii at Mãnoa Honolulu, Hawaii, United States Jürgen Schubert, M. Sc. Stadtwerke Düsseldorf AG Düsseldorf, Germany Ronald B. Linsky National Water Research Institute Fountain Valley, California, United States Gina Melin National Water Research Institute Fountain Valley, California, United States 1. What is Riverbank Filtration? The purpose ofthis book is to show that riverbank filtration (RBF) isa low-cost and efficient alternative water treatment for drinking-water applications. There are two immediate benefits to the increased use of RBF: Minimized need for adding chemicals like disinfectants and coagulants to surface water to control pathogens. Decreased costs to the community without increased risk to human health. Butwhat,exactly, isRBF? In humid regions, river water naturally percolates through the ground into aquifers (which are layers of sand and gravel that contain water underground) during high-flow conditions. In arid regions, most rivers lose flow, and the percolating water passes through soil and aquifer material until it reaches the water table. During these percolation processes, potential contaminants present in river water are filtered and attenuated. If there are no other contaminants present in the aquifer or ifthe respective contaminants are present at lower concentrations, the quality of water in the aquifer can be ofhigher quality than that found in theriver. In RBF, production wells — which are placed near the banks ofrivers —pump large quantities ofwater.
Book Synopsis Watershed Management for Potable Water Supply by : National Research Council
Download or read book Watershed Management for Potable Water Supply written by National Research Council and published by National Academies Press. This book was released on 2000-02-17 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1997, New York City adopted a mammoth watershed agreement to protect its drinking water and avoid filtration of its large upstate surface water supply. Shortly thereafter, the NRC began an analysis of the agreement's scientific validity. The resulting book finds New York City's watershed agreement to be a good template for proactive watershed management that, if properly implemented, will maintain high water quality. However, it cautions that the agreement is not a guarantee of permanent filtration avoidance because of changing regulations, uncertainties regarding pollution sources, advances in treatment technologies, and natural variations in watershed conditions. The book recommends that New York City place its highest priority on pathogenic microorganisms in the watershed and direct its resources toward improving methods for detecting pathogens, understanding pathogen transport and fate, and demonstrating that best management practices will remove pathogens. Other recommendations, which are broadly applicable to surface water supplies across the country, target buffer zones, stormwater management, water quality monitoring, and effluent trading.
Book Synopsis Field Techniques for Estimating Water Fluxes Between Surface Water and Ground Water by : Donald O. Rosenberry
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.
Book Synopsis Investigation of Correlation Between Remotely Sensed Impervious Surfaces and Chloride Concentrations by : Faranak Amirsalari
Download or read book Investigation of Correlation Between Remotely Sensed Impervious Surfaces and Chloride Concentrations written by Faranak Amirsalari and published by . This book was released on 2007 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water quality and nonpoint source (NPS) pollution are important issues in many areas of the world, including the Greater Toronto Area where urban development is changing formerly rural watersheds into impervious surfaces. Impervious surfaces (i.e. roads, sidewalks, parking lots, strip malls, building rooftops, etc.) made out of impenetrable materials directly impact hydrological attributes of a watershed. Therefore, understanding the degree and spatial distribution of impervious surfaces in a watershed is an important component of overall watershed management. According to Environment Canada's estimates, road salts, also considered nonpoint source pollutants, represent the largest chemical loading to Canadian surface waters. The main objective of this study is to verify the often assumed correlation between impervious surfaces and chlorides that result from the application of road salts, focusing on a case study in the selected six major watersheds within the Greater Toronto Area. In this study, Landsat-5 TM images from 1990, 1995, 2000, and 2005 were used in mapping urban impervious surface changes within the study area. Pixel-based unsupervised classification technique was utilized in estimation of percentage impervious surface coverage for each watershed. Chloride concentrations collected at Water Quality Monitoring Stations within the watersheds were then mapped against impervious surface estimates and their spatiotemporal distribution was assessed. In a GIS environment, remotely sensed impervious surface maps and chloride maps were overlaid for the investigation of their potential correlation. The main findings of this research demonstrate an average of 12.9% increase in impervious surface areas as well as a three-fold increase in chloride concentrations between 1990 and 2005. Water quality monitoring stations exhibiting the highest amounts of chloride concentrations correspond with the most impervious parts of the watersheds. The results also show a correlation (coefficient of determination of 0.82) between impervious surfaces and chloride concentrations. The findings demonstrate that the increase in imperviousness do generate higher chloride concentrations. Correspondingly, the higher levels of chloride can potentially degrade quality of surface waters in the region. Through an innovative integrated remote sensing approach, the study was successful in identifying areas most vulnerable to surface water quality degradation by road salts.
Book Synopsis Assessing Ground-water Vulnerability to Contamination by : Michael J. Focazio
Download or read book Assessing Ground-water Vulnerability to Contamination written by Michael J. Focazio and published by . This book was released on 1984 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling and Nonpoint Source Pollution Loading Estimates in Surface Water Management by : Robert D. Chandler
Download or read book Modeling and Nonpoint Source Pollution Loading Estimates in Surface Water Management written by Robert D. Chandler and published by . This book was released on 1993 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of urban development on stream ecosystems in nine metropolitan study areas across the United States by : James F. Coles
Download or read book Effects of urban development on stream ecosystems in nine metropolitan study areas across the United States written by James F. Coles and published by . This book was released on 2012 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterizing Groundwater-surface Water Interactions in a Regulated River Using Electrical Resistivity by : Michael Sean Markowski
Download or read book Characterizing Groundwater-surface Water Interactions in a Regulated River Using Electrical Resistivity written by Michael Sean Markowski and published by . This book was released on 2010 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The regular release of water from Tom Miller Dam, Austin, TX causes daily stage oscillations in the Colorado River that persist downstream over long distances. Fifteen km downstream from the dam, at the Hornsby Bend Center for Environmental Research, river stage rises and falls by nearly a meter every day. The objective of this research project was to test a method of electrical resistivity imaging that detects and characterizes the effects of this stage fluctuation on groundwater/ surface water interactions. Two separate resistivity methods are utilized in this study. A stationary transect is run across the width of the river. Data collection along this transect is repeated back-to-back for approximately 24 hours to capture the 24 hour cycle of the stage oscillation. Continuous Resistivity Profiling (CRP) was also used along two separate transects each about 400 m. The two transects were repeated ten times, at 2.5 hour intervals to correspond with the 24 hour stage oscillation. Stacking the tomographs from the stationary transect into a time-lapse representation shows significant changes in resistivity in the uppermost 2.0 m of substrate located immediately below the sediment-water interface. Results from the CRP profiles indicate that this exchange can be detected over an even larger spatial scale. These results show electrical resistivity as a powerful tool for better understanding the effects of oscillating river stage on hyporheic processes.
Book Synopsis Protection of Public Water Supplies from Ground-water Contamination by :
Download or read book Protection of Public Water Supplies from Ground-water Contamination written by and published by . This book was released on 1985 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The publication contains material from technology transfer seminars presented for the water supply community. The document provides utility managers and operators, regulators and technical specialists with guidance for preventing contamination and alternatives for treating public ground-water supplies that are contaminated. An understanding of the processes that affect the movement and degradation of contaminants in the subsurface is essential for effective ground-water quality management. Knowledge can be gained from chapters on 'Ground-Water Hydrology', 'Classification of Ground-Water Regions' and Ground-Water--Surface Water Relationship'.
Book Synopsis Civil Engineering Hydraulics Abstracts by :
Download or read book Civil Engineering Hydraulics Abstracts written by and published by . This book was released on 1985 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
