Download or read book Influence of Rainfall and Catchment Characteristics on Urban Stormwater Quality written by An Liu and published by . This book was released on 2011 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Role of Rainfall and Catchment Characteristics on Urban Stormwater Quality written by An Liu and published by Springer. This book was released on 2015-03-20 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The key highlights of the book include an innovative rainfall classification methodology based on stormwater quality to support the planning and design of stormwater treatment systems. Additionally, this book provides a practical approach to effective stormwater treatment design and development of a methodology for rainfall selection to optimize stormwater treatment based on both its quality and quantity. The case study presented in this book evaluates how pollutant buildup on urban surfaces and stormwater runoff quality varies with a range of catchment characteristics based on different rainfall types. The information presented will be of particular interest to practitioners such as stormwater-treatment designers, urban planners and hydrologic and stormwater-quality model developers since the outcomes presented provide practical approaches to and recommendations for urban stormwater-quality improvement. Readers will benefit from a state-of-the-art critical review of literature on urban stormwater quality, an in-depth discussion on stormwater-quality processes providing guidance for engineering practice such as stormwater treatment design and model development, a comprehensive overview on the application of multivariate data analysis techniques and a paradigm of the integrated use of commercial models and mathematical equations to undertake a comprehensive, urban stormwater-quality investigation.
Download or read book Decision Making with Uncertainty in Stormwater Pollutant Processes written by Buddhi Wijesiri and published by Springer. This book was released on 2018-12-06 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents new findings on intrinsic variability in pollutant build-up and wash-off processes by identifying the characteristics of underlying process mechanisms, based on the behaviour of various-sized particles. The correlation between build-up and wash-off processes is clearly defined using heavy metal pollutants as a case study. The outcome of this study is an approach developed to quantitatively assess process uncertainty, which makes it possible to mathematically incorporate the characteristics of variability in build-up and wash-off processes into stormwater quality models. In addition, the approach can be used to quantify process uncertainty as an integral aspect of stormwater quality predictions using common uncertainty analysis techniques. The information produced using enhanced modelling tools will promote more informed decision-making, and thereby help to improve urban stormwater quality.
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 Water Quality written by Vladimir Novotny and published by . This book was released on 1994 with total page 1082 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Urban Stormwater Management in the United States written by National Research Council and published by National Academies Press. This book was released on 2009-03-17 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid conversion of land to urban and suburban areas has profoundly altered how water flows during and following storm events, putting higher volumes of water and more pollutants into the nation's rivers, lakes, and estuaries. These changes have degraded water quality and habitat in virtually every urban stream system. The Clean Water Act regulatory framework for addressing sewage and industrial wastes is not well suited to the more difficult problem of stormwater discharges. This book calls for an entirely new permitting structure that would put authority and accountability for stormwater discharges at the municipal level. A number of additional actions, such as conserving natural areas, reducing hard surface cover (e.g., roads and parking lots), and retrofitting urban areas with features that hold and treat stormwater, are recommended.
Download or read book Influence of Traffic and Land Use on Urban Stormwater Quality written by Janaka M.A. Gunawardena and published by Springer. This book was released on 2017-07-18 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a detailed analysis in relation to pollutant processes and transport pathways encompassing atmospheric pollutants, atmospheric deposition and build-up on road surfaces of traffic generated key pollutants. The research study undertaken by the authors created extensive knowledge relating to the relevant processes and establishing their relationships as a chain of processes. The information presented in this book was derived based on comprehensive experimental investigations including field sampling, laboratory testing, mathematical modelling and multivariate and univariate statistical data analyses. The knowledge presented will be of particular interest to readers such as stormwater treatment design specialists, decision-makers and urban planners since these outcomes provide practical suggestions and recommendations to effective urban stormwater treatment design.
Download or read book Urban Stormwater Hydrology written by Osman A. Akan and published by CRC Press. This book was released on 1993-02-28 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book and software package provides a concise, practical guide for those involved in studying, planning, and designing urban stormwater management practices. The emphasis is on engineering calculations rather than theory. Many facets of stormwater management, from rainfall analysis and design storm selection procedures to runoff calculations and the evaluation of wet ponds for long-term, efficient water quality control. The book presents broadly used conventional methods and innovative techniques that are in line with current trends and needs. The book also includes the Soil Conservation Service's TR-20 computer software and a new easy-to-follow user's guide. From the Preface There has been much interest in urban stormwater hydrology during the past two decades due to the widespread recognition of the adverse effects of urbanization on stormwater runoff. During this period, many individuals and organizations developed innovative techniques to estimate and control the quantity and the water quality of urban stormwater runoff.
Download or read book Soil Sampling and Methods of Analysis written by M.R. Carter and published by CRC Press. This book was released on 2007-08-03 with total page 1264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thoroughly updated and revised, this second edition of the bestselling Soil Sampling and Methods of Analysis presents several new chapters in the areas of biological and physical analysis and soil sampling. Reflecting the burgeoning interest in soil ecology, new contributions describe the growing number and assortment of new microbiological
Download or read book Characteristics of Urban Development and Associated Stormwater Quality written by Elena-Celina Bochis and published by . This book was released on 2010 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urban land uses and their associated impervious cover increase the quantity and worsen the quality of stormwater runoff, which can seriously impair receiving waters. It is known that there is considerable variability in runoff quantity and quality between rain-to-rain events due to rainfall spatial variability. In addition, runoff presents significant variability between neighborhoods, even if they are affected by the same rain event. It is hypothesized that the variability in stormwater quality between sites is associated with the difference in land uses and surface covers. This research examined the variability in stormwater quality characteristics as contained in the National Stormwater Quality Database (NSQD) for different land use categories and nine selected stormwater constituents (TSS, total zinc, total copper, total lead, total phosphorous, dissolved phosphorous, total nitrogen, TKN, and fecal coliform) at different geographical scales - national, regional (EPA Rain Zone 2), and local levels (Jefferson County, AL). The results of the local data analyses were compared to the results obtained from the national and regional analyses. This research also examined the detailed land development characteristics based on actual local field measurements and explained how this variability affects the variability in stormwater characteristics. The land development characteristics information was collected from Little Shades Creek watershed and five highly urbanized drainage areas situated in Jefferson County, AL (in and near the city of Birmingham). About 170 neighborhoods were surveyed in detailed to determine the actual development characteristics and their variability. This research found that each major land use had unique patterns and mixtures of surfaces. These, in addition to the activities taking place within the land uses, affect the runoff quality and its variability from these areas. It was found that there is less variability in stormwater quality characteristics within each land use category compared to the variability between the land use categories. This finding is also true for land cover areas in that there are lower levels of variations in these area types within each land use compared to between the different land uses. The results from this dissertation analyses can be used as guidance for local stormwater quality monitoring efforts, but the specific results are not all expected to be applicable everywhere. The main focus of this research was in investigating stormwater variability, specifically its sources and how it can be reduced. The general concern with the high variability that is associated with stormwater quality is the uncertainty of being able to meet discharge requirements, even with extensive use of stormwater control practices. This uncertainty can be eliminated, or at least reduced, by a better understanding of sources of this variability. Specifically, appropriate discharge regulations that recognize this variability will assist the stormwater managers to better use their financial resources and to maximize receiving water quality improvements.
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:
Download or read book Refining Urban Stormwater Pollution Characterization and Prediction to Better Design Locate and Maintain Stormwater Control Measures written by Ian M. Simpson and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: While urban development provides many services to humanity, it also substantially impacts the environment and ecology of natural areas. Urbanization involves the conversion of forested and agricultural lands to impervious surfaces such as buildings, houses, roads, parking lots, and sidewalks. Stormwater runoff occurs when rainfall is not captured in depressional storage or is unable to infiltrate the soil surface. Land use changes may increase the generation and transport of pollutants and rate and volume of stormwater runoff, leading to increased pollutant load, flooding, in-stream erosion, and elevated stream temperatures. In urban areas developed prior to the Clean Water Act, stormwater is, in many cases, discharged without treatment. In recent decades, low impact development techniques, such as stormwater control measures (SCMs), have been increasingly adopted by municipalities to mitigate urban non-point source pollution. Efficacy of SCM retrofits run the gamut from success to failure. Thus, there is a need to fully understand the factors that affect stormwater quality and quantity to guide management. Urban land use and land cover (LULC) has been recognized as a strong influencer of stormwater quality and hydrology. Herein, I performed a meta-analysis utilizing stormwater quality data from the published literature spanning 360 unique urban watersheds. Furthermore, I monitored stormwater quality and hydrology from (urban and forested) watersheds in Ohio. Results indicate water quality can be further improved with a regionalization scheme. More specifically, regional climate substantially affected the quality of runoff. From the meta-analysis, it was observed that there is an absence of stormwater quality in certain regions of the world, one of which was the midwestern United States. Thus, stormwater models cannot be accurately calibrated or validated for this region. Analysis of local stormwater data (i.e., Dayton, Ohio metropolitan area) revealed LULC and rainfall patterns influenced the quality of runoff. Recent data also suggest stormwater quality is not temporally static (i.e., over years or decades), which opens various avenues for future research. Though design of SCMs is typically based on predicted runoff volume or peak flow rate, findings from water quality monitoring suggest placement of SCMs should also be considered in design (e.g., locate SCMs in hot spots for the generation of a pollutant of interest). Due to simplified hydrologic models, subjective parameter selection, and changing climatic patterns, the prediction of hydrologic responses contains large uncertainty. To bolster widely accepted models, I compared monitored hydrologic responses to predicted responses utilizing a variety of methodologies. Model performance varied with rainfall depth and watershed characteristics such and LULC and imperviousness. Thus, there was no one best model for every scenario, but the provided discussion will aide managers in selecting which model would provide the most accurate results under given circumstances. SCMs are often retrofitted with pollutants of concern in mind; however, these systems may provide treatment for other non-target pollutants. For example, stream temperature has been identified as the most important environmental cue to aquatic species behavior. Thermal impairments to receiving streams are commonly associated with impervious surfaces, yet ponds, wetlands, detention basins, and other noninfiltrating SCMs that are commonly retrofitted (or installed in new developments) further exacerbate stormwater temperature as they are subjected to solar radiation, often with little shading. Infiltrating SCMs such as bioretention and permeable pavements have shown promising reductions in stormwater temperature at the site-scale, but it is still unknown how a network of SCMs retrofitted at the watershed scale can ameliorate thermal impacts. My goal was to address this gap in knowledge to better inform other management strategies (e.g., riparian buffers, clustered imperviousness, underground storage/conveyance) that may need to be considered to protect cold-water ecosystems. Results indicate the best method of reducing thermal mass exported to receiving streams is through runoff volume mitigation, as runoff temperatures (monitored at watershed outlets) from watersheds with SCM retrofits were not different from watersheds without SCMs. It is commonly accepted in the literature that hydrologic mitigation is most critical for reducing the export of priority pollutants. In the final chapter of this dissertation, I addressed the effectiveness of five different maintenance techniques (two of which are new to the literature) to restore hydraulic function across five different permeable pavements by quantifying surface infiltration rates (SIRs) before and after maintenance activities. Three of the maintenance activities significantly improved SIRs, but results varied in effectiveness based on in-situ pavement conditions and operational factors. Thus, many maintenance take-aways were addressed such as performing maintenance during dry periods, topping up of joint aggregate after maintenance, and avoiding permeable pavement in high traffic/high speed areas.
Download or read book Urban Stormwater Runoff written by Ven Te Chow and published by . This book was released on 1976 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stormwater Modeling written by Donald E. Overton and published by Elsevier. This book was released on 2013-10-22 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stormwater Modeling presents the fundamentals of deterministic, parametric, and stochastic stormwater modeling. It is assumed that the reader or student will have a basic background in science or engineering; however, the authors are of the opinion that one can comfortably read and understand this treatise with a fundamental knowledge of calculus and differential equations. The book has been written with the intent of reaching an audience concerned primarily with evaluating the effects of land use on stormwater for the purpose of doing feasibility studies, planning, and/or design work. The book is organized into five parts. Part I discusses various modeling concepts such as the definition of a mathematical model, the systems approach to model building, examples of parametric and deterministic modeling, and stormwater model optimization. Part II on deterministic modeling covers the modeling of overland and open channel flow; kinematic flow approximation; and estimation of time of concentration using kinematic wave theory. Part III covers parametric modeling and includes chapters on model optimization;. analysis of the effects of urbanization and logging on stormwater; and evaluation of the effects of strip coal mining on watershed hydrologic response. Parts IV and V deal with stochastic stormwater modeling and stormwater quality modeling, respectively.
Download or read book The Influence of Selected Precipitation and Land Use Characteristics Upon the Water Quality of Urban Runoff written by David Michael Peterson and published by . This book was released on 1976 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Modeling the Management of Stormwater Impacts written by William James and published by CRC Press. This book was released on 2021-07-28 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest book in the popular series demonstrates state-of-the-art methods, models, and techniques for water quality management. This book includes a CD-ROM that collects hundreds of hard-to-find literature citations from the gray literature.
Download or read book Urban Stormwater Hydrology written by David F. Kibler and published by . This book was released on 1982 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
