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Utility Of Watershed Models
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Book Synopsis Simulation Modeling for Watershed Management by : James Westervelt
Download or read book Simulation Modeling for Watershed Management written by James Westervelt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discussion of the role of modeling in the management process, with an overview of state-of-the-art modeling applications. The first chapters provide a background on the benefits and costs of modeling and on the ecological basis of models, using historical applications as examples, while the second section describes the latest models from a wide selection of environmental disciplines. Since management frequently requires the integration of knowledge from many different areas, both single discipline and multidiscipline models are discussed in detail, and the author emphasizes the importance of understanding the issues and alternatives in choosing, applying, and evaluating models. Land and watershed managers as well as students of forestry, park management, regional planing and agriculture will find this a thorough and practical introduction to all aspects of modeling.
Book Synopsis Utility of Watershed Models by : Robert Nunoo
Download or read book Utility of Watershed Models written by Robert Nunoo and published by . This book was released on 2020 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Watershed models are used to represent the physical, chemical, and biological mechanisms that determine the fate and transport of pollutants in waterbodies (Daniel 2011). These models, in general, are used for exploratory, planning, and regulatory purposes (Harmel and others 2014). Watershed models have numerous applications; one such use is the development of total maximum daily load (TMDL). TMDL is the amount of pollution a waterbody can receive without becoming impaired. Because of the challenge of uncertainty associated with models and the TMDL development process, the United States Clean Water Act Section 303 (d)(1)(c) requires that a margin of safety (MOS) be specified to account for uncertainty in TMDLs. The question of how MOS is estimated in TMDL was identified as a problem by the National Research Council (NRC 2001). Since the identification of the problem about two decades ago, there have been very few inventories or audits of approved TMDL studies.This study describes a natural language processing and machine learning aided review of the MOS in approved TMDLs from 2002 to 2016. The study determined whether the MOS values incorporated followed a pattern and examined whether there exist a relationship between MOS values and some ecological conditions. Relatively few TMDLs were based on some form of calculation to estimate explicit MOS values; these TMDLs constituted only 16% of the reviewed sample. The remaining 84% used conventional values, but few of those studies provided reasons for their selected values. A statistical assessment of those MOS values revealed that the MOS depended on States (location of waterbody), USEPA regions, waterbody type, designated water use, TMDL model used, and dataavailability. The findings indicate that few TMDL developers are following the National Research Council’s suggestions of using a rigorous uncertainty estimation approach for rational choices for the MOS. An adaptive approach based on Bayes-Discrepancy was proposed for estimating an MOS for a TMDL. The approach is based on the Bayesian hierarchical framework of estimating uncertainty associated with watershed models. With this approach, TMDL developers can communicate the effects of their watershed model. The approach was applied to a Ferson Creek model of the Fox River watershed to access variability and uncertainty in the model results, and also estimate possible MOS values for two monitoring stations in the watershed. Results suggest that an MOS of 0.04 mg/L could lead to a 0.1 probability of violating the water quality standard for an underpredicting model. The Bayes-discrepancy estimation method will enable TMDL developers and watershed managers to strike a balance between implementation options and water quality concerns.
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309679702 Total Pages :423 pages Book Rating :4.3/5 (96 download)
Book Synopsis Review of the New York City Watershed Protection Program by : National Academies of Sciences, Engineering, and Medicine
Download or read book Review of the New York City Watershed Protection Program written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2020-12-04 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: New York City's municipal water supply system provides about 1 billion gallons of drinking water a day to over 8.5 million people in New York City and about 1 million people living in nearby Westchester, Putnam, Ulster, and Orange counties. The combined water supply system includes 19 reservoirs and three controlled lakes with a total storage capacity of approximately 580 billion gallons. The city's Watershed Protection Program is intended to maintain and enhance the high quality of these surface water sources. Review of the New York City Watershed Protection Program assesses the efficacy and future of New York City's watershed management activities. The report identifies program areas that may require future change or action, including continued efforts to address turbidity and responding to changes in reservoir water quality as a result of climate change.
Book Synopsis Watershed Models by : Vijay P. Singh
Download or read book Watershed Models written by Vijay P. Singh and published by CRC Press. This book was released on 2010-09-28 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: Watershed modeling is at the heart of modern hydrology, supplying rich information that is vital to addressing resource planning, environmental, and social problems. Even in light of this important role, many books relegate the subject to a single chapter while books devoted to modeling focus only on a specific area of application. Recognizing the
Book Synopsis Watershed Models and Their Applicability to Conjunctive Use Management by :
Download or read book Watershed Models and Their Applicability to Conjunctive Use Management written by and published by . This book was released on 1989 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Utility of Modeling Water Quality by : Rebecca K Hanson
Download or read book The Utility of Modeling Water Quality written by Rebecca K Hanson and published by . This book was released on 2016 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Watershed planning involves identifying pollutants and developing management strategies to reduce impacts of pollutant loading. Current federal and state guidelines for watershed planning focus on using simple models to determine pollutant loads and estimate the benefits from implementing management strategies. These models often use simple assumptions and readily available information to make predictions about phosphorus loading to receiving water at the watershed level. This study examines two water quality models applied to the Squam Watershed in New Hapshire--one simple, one complex--and investigates the usefulness of these models for watershed planning and management"--Abstract.
Book Synopsis Use of a Watershed-modeling Approach to Assess Hydrologic Effects of Urbanization, North Fork Pheasant Branch Basin Near Middleton, Wisconsin by : Jeffrey J. Steuer
Download or read book Use of a Watershed-modeling Approach to Assess Hydrologic Effects of Urbanization, North Fork Pheasant Branch Basin Near Middleton, Wisconsin written by Jeffrey J. Steuer and published by . This book was released on 2001 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Watershed Models and Their Applicability to Conjuctive Use Management by : Aly I. El-Kadi
Download or read book Watershed Models and Their Applicability to Conjuctive Use Management written by Aly I. El-Kadi and published by . This book was released on 1989 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Use of Nutrient Balances in Comprehensive Watershed Water Quality Modeling of Chesapeake Bay by : Anthony S. Donigian
Download or read book Use of Nutrient Balances in Comprehensive Watershed Water Quality Modeling of Chesapeake Bay written by Anthony S. Donigian and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this research was to improve the overall utility of the Chesapeake Bay Watershed Model, based on the U.S. Environmental Protection Agency Hydrologic Simulation Program-Fortran model, as a planning tool for comprehensive watershed planning and assessment The Chesapeake Bay Watershed Model is a unique state of-the-art watershed modeling capability that includes detailed soil process simulation for agricultural areas, linked to an instream water quality and nutrient model capable of representing comprehensive point and nonpoint pollutant loadings for the entire 68,000 square mile drainage area of the Chesapeake Bay The specific improvements recommended and tasks performed in this effort included development of nutrient balances for nonagricultural land uses; testing of the application procedures for forest, pasture, and urban land uses; and application of the enhanced model to the Shenandoah Subbasin within the Chesapeake Bay watershed to assess load contributions and impacts of the model refinements. The real benefits of the current refinement phase of the Chesapeake Bay Program Watershed Model are realized from the extension of the nutrient balance approach to all major land use (except urban, in the simulations) and the utility of this approach for nutrient management.
Book Synopsis Computer Models of Watershed Hydrology by : Vijay P. Singh
Download or read book Computer Models of Watershed Hydrology written by Vijay P. Singh and published by Water Resources Publications, LLC. This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book stemmed from a desire to provide a comprehensive account of some of the world's popular computer models of watershed hydrology. To achieve this objective, a variety of models that together spanned a range of characteristics were included. Some of those models represent a large class of models, some are comprehensive, some are applicable to not only civil works but also to agricultural, range and forest, and nonpoint source pollution fields; some are equipped with the GIS and remote sensing capability, and some represent a large cross-section of models from around the world. The subject matter of this book is divided into 29 chapters. Beginning with introductory remarks on watershed modeling in Chapter 1, model calibration and reliability estimation are presented in Chapters 2 and 3, respectively. The next ten chapters (4 to 13) present some of the popular models from around the world. These models are in the realm of civil engineering applications of watershed hydrology models. Some of the models are more comprehensive than others and some have the management capabilities. The next two models, presented in Chapters 14 and 15, are large-scale models and embody GIS and remote sensing technology. The models presented in Chapters 16 to 23 are more physically-based and distributed in nature, quite suited to nonpoint source pollution modeling, and to assess environmental impact of land use changes. The remaining 5 models presented in Chapters 24 to 29 are within the realm of agricultural and forestry applications. Nonpoint source pollution, erosion and impact on soil productivity, drainage design, etc., can be modeled by applying these models. Computer Models of Watershed Hydrology will be of interest to practicing hydrologists, especially to hydrologic modelers and the model users, as well as specialists in the fields of civil engineering, agricultural engineering, environmental science, forest and range science, earth science, climatology, and watershed sciences. Graduate students, teachers engaged in graduate instruction, and researchers will also find this book useful. Due to the popularity of this book and with innovations in printing, this was reprinted in 2012 with the original information. It is now part of WRP’s Classic Resource Edition.
Author :Task Committee on GIS Modules and Distributed Models of the Watershed Publisher :ASCE Publications ISBN 13 :9780784474730 Total Pages :132 pages Book Rating :4.4/5 (747 download)
Book Synopsis GIS Modules and Distributed Models of the Watershed by : Task Committee on GIS Modules and Distributed Models of the Watershed
Download or read book GIS Modules and Distributed Models of the Watershed written by Task Committee on GIS Modules and Distributed Models of the Watershed and published by ASCE Publications. This book was released on 1999-01-01 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepared by the Task Committee on GIS Modules and Distributed Models of the Watershed of ASCE. This report guides professionals in selecting the most advantageous applications of geographic information system (GIS) modules and distributed models for watershed runoff. Recent advances in technology offer hydrologic engineers, watershed managers, and data collection agencies unprecedented capabilities for storing and manipulating data. With the advent of Digital Elevation Models (DEM), Triangulated Irregular Networks (TIN), Digital Line Graphs (DLG), and GIS software, the use of watershed modeling among industry professionals has increased at an incredible rate. With this growth, it is increasingly difficult for practitioners to choose the most effective use of the technology. This report identifies state-of-the-art GIS hydrology analysis software and techniques, as well as GIS types and map projections. It covers data commonly required for hydrologic analysis, limitations of available data, and the integration of watershed hydrological analysis software and GIS techniques. The appendix highlights nine examples of watershed modeling systems, including the Watershed Modeling System (WMS), the Soil and Water Assessment Tool (SWAT), and the Hydrologic Model CASC2D.
Book Synopsis Use of Models for Water Resources Management, Planning, and Policy by : United States. Congress. Office of Technology Assessment
Download or read book Use of Models for Water Resources Management, Planning, and Policy written by United States. Congress. Office of Technology Assessment and published by . This book was released on 1982 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Use of Nutrient Balances in Comprehensive Watershed Water Quality Modeling of Chesapeake Bay by : Anthony S. Donigian
Download or read book Use of Nutrient Balances in Comprehensive Watershed Water Quality Modeling of Chesapeake Bay written by Anthony S. Donigian and published by . This book was released on 1998 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this research was to improve the overall utility of the Chesapeake Bay Watershed Model, based on the U.S. Environmental Protection Agency Hydrologic Simulation Program-Fortran model, as a planning tool for comprehensive watershed planning and assessment The Chesapeake Bay Watershed Model is a unique state of-the-art watershed modeling capability that includes detailed soil process simulation for agricultural areas, linked to an instream water quality and nutrient model capable of representing comprehensive point and nonpoint pollutant loadings for the entire 68,000 square mile drainage area of the Chesapeake Bay The specific improvements recommended and tasks performed in this effort included development of nutrient balances for nonagricultural land uses; testing of the application procedures for forest, pasture, and urban land uses; and application of the enhanced model to the Shenandoah Subbasin within the Chesapeake Bay watershed to assess load contributions and impacts of the model refinements. The real benefits of the current refinement phase of the Chesapeake Bay Program Watershed Model are realized from the extension of the nutrient balance approach to all major land use (except urban, in the simulations) and the utility of this approach for nutrient management.
Book Synopsis Hydrology and the Management of Watersheds by : Kenneth N. Brooks
Download or read book Hydrology and the Management of Watersheds written by Kenneth N. Brooks and published by John Wiley & Sons. This book was released on 2012-12-26 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition is a major revision of the popular introductory reference on hydrology and watershed management principles, methods, and applications. The book's content and scope have been improved and condensed, with updated chapters on the management of forest, woodland, rangeland, agricultural urban, and mixed land use watersheds. Case studies and examples throughout the book show practical ways to use web sites and the Internet to acquire data, update methods and models, and apply the latest technologies to issues of land and water use and climate variability and change.
Book Synopsis Impacts of Major Point and Non-Point Sources on Raw Water Treatability by : G. Pyke
Download or read book Impacts of Major Point and Non-Point Sources on Raw Water Treatability written by G. Pyke and published by International Water Assn. This book was released on 2004-01-01 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Utilities can help protect source quality and reduce treatment costs at minimal expense by forming partnerships with watershed stakeholders. Utility participation in protection efforts, even at zero or low BMP cost-share levels, helps leverage funds and prioritizes the watershed as a drinking water catchment. Due to the high cost of treatment plant capital improvements relative to watershed BMPs, utilities should consider long-term investment in source protection measures in order to reduce the need for major process changes. Utilities should also consider non-economic benefits of source protection, including the public health benefit of reduced exposure to pesticides, pathogens, and emerging contaminants. This guidance manual includes the following: . A literature review describing the extent and impact of agricultural non-point source pollution, and the pollutant removal mechanisms and performance of common agricultural BMPs . An overview of watershed modeling that describes watershed models, their limitations, and the resources needed to use them . An overview of water treatment plant simulation modeling that describes underlying model assumptions . Results of watershed model runs showing the relative contributions of different point and non-point sources and the effects of BMP implementation on pollutant loads . Results of WTP model runs that show the impact of changes in pollutant loads on the operations, costs, and effluent quality of four WTP types RESEARCH PARTNER WERF
Author :American Society of Civil Engineers. TMDL Analysis and Modeling Task Committee Publisher :Asce American Society of Civil Engineers Ewri ISBN 13 :9780784414712 Total Pages :0 pages Book Rating :4.4/5 (147 download)
Book Synopsis Total Maximum Daily Load Analysis and Modeling by : American Society of Civil Engineers. TMDL Analysis and Modeling Task Committee
Download or read book Total Maximum Daily Load Analysis and Modeling written by American Society of Civil Engineers. TMDL Analysis and Modeling Task Committee and published by Asce American Society of Civil Engineers Ewri. This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews more than 35 TMDL models and procedures for estimating the maximum amount of a pollutant that a water body can receive and still meet applicable water quality standards.
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:
