Download or read book Peakflow Causative Mechanisms and Frequencies at Reynolds Creek Southwestern Idaho written by Tracie Kirkham and published by . This book was released on 2002 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Peakflow frequency analysis is used in forest hydrology for designing stream crossing structures such as culverts and bridges. The traditional approach to frequency analysis is based on the assumption that the observed sample of peakflows represents a homogeneous population. It is not clear if using the "homogeneous" population of the annual series correctly represents the frequency distribution of high flows resulting from different causal mechanisms. This later situation may present a serious problem when extrapolation of the flow frequency curves is required, which is nearly always the case for the estimation of the 50- and 100-year peakflow. The objective of this study was to determine if frequency distributions are different when peakflows are separated by seasonal mechanisms. Additionally, it was desired to compare the peakflow estimates from the traditional annual series results with the separated distributions for a range of exceedence probabilities. Streamfiow data were obtained for three gages at Reynolds Creek Basin, Idaho. For water years 1964 to 1996, the instantaneous maximum flow was identified separately for peakflows that occurred in the winter, prior to snowmelt; in spring, during snowmelt; and in summer, after the snowmelt period. Causative mechanisms were inferred from the seasonal groups and included rain, rain-on-snow, rain on frozen ground in the winter, clear-sky or rain-on-snow in the springtime, and thundershowers in the summer. Separating peakflows resulted in differences between the flow frequency distributions. At the 0.40 km2 headwater basin, Reynolds Mountain East, snowmelt caused the highest flows for exceedence probabilities between the 99% and 1.4%, whereas winter peakflows caused the highest flows for exceedence probabities less than 1.4%. At the 55 km2 basin, Reynolds Creek at Tollgate, snowmelt caused the largest flows for exceedence probabilities between 99% and 7%, and winter mechanisms caused the largest flows for exceedence probabilities less than 7%. At the 239 km2 basin, the Reynolds Creek Outlet, snowmelt caused the greatest flows for exceedence probabilities between 99% and 45%, and winter rainfall, rain-on-snow or rain on frozen soil caused the largest flows for exceedence probabilities equal to or less that 45%. At the Outlet basin, thundershowers caused higher flows than snowmelt mechanisms for exceedence probabilities less than or equal to 4%. The data suggest that stratifying peakflows based on season of occurrence provides a more accurate estimate of the peakflow frequency distributions. The individual curves provide a better idea of the distributions, especially when the curves are extrapolated to low, rarer, exceedence probabilities. Damage to structures may be reduced if causative mechanisms are considered when designing structures using peakflow analysis. Constructing a composite curve to incorporate the probability of each type of seasonal mechanism, in any given year, is an appropriate tool to consider where mixed mechanisms are evident in the streamflow record.
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 Geothermal Direct Use Engineering and Design Guidebook written by Paul J. Lienau and published by . This book was released on 1989 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Vulnerability and Adaptation Assessments written by Ron Benioff and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 563 pages. Available in PDF, EPUB and Kindle. Book excerpt: The possible impacts of global climate change on different countries has led to the development and ratification of the Framework Convention on Climate Change (FCCC) and has a strong bearing on the future sustainable development of developing countries and countries with economies in transition. The preparation of analytical methodologies and tools for carrying out assessments of vulnerability and adaptation to climate change is therefore of prime importance to these countries. Such assessments are needed to both fulfill the reporting requirements of the countries under the FCCC as well as to prepare their own climate change adaptation and mitigation plans. The vulnerability and adaptation assessment guidelines prepared by the U.S. Country Studies Program bring together all the latest knowledge and experience from around the world on both vulnerability analysis as well as adaptation methodologies. It is currently being applied successfully by scientists in over fifty countries from all the regions of the globe. This guidance is being published to share it with the wider scientific community interested in global climate change issues. This guidance document has two primary purposes: • To assist countries in making decisions about the scope and methods for their vulnerability and adaptation assessments, • To provide countries with guidance and step-by-step instructions on each of the basic elements of vulnerability and adaptation assessments.
Download or read book Wastewater Microbiology written by Gabriel Bitton and published by John Wiley & Sons. This book was released on 2011-06-09 with total page 809 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wastewater Microbiology focuses on microbial contaminants found in wastewater, methods of detection for these contaminants, and methods of cleansing water of microbial contamination. This classic reference has now been updated to focus more exclusively on issues particular to wastewater, with new information on fecal contamination and new molecular methods. The book features new methods to determine cell viability/activity in environmental samples; a new section on bacterial spores as indicators; new information covering disinfection byproducts, UV disinfection, and photoreactivation; and much more. A PowerPoint of figures from the book is available at ftp://ftp.wiley.com/public/sci_tech_med/wastewater_microbiology.
Download or read book Riparian Ecosystems and Their Management written by and published by . This book was released on 1985 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drainage Principles and Applications written by International Institute for Land Reclamation and Improvement and published by . This book was released on 1994 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text book brings together 26 chapters, 546 fugures, 166 tables, a glossary of 332 definitions. Being the result of ILRI's core business: bringing together the principles and applications of drainage, by giving international courses on drainage
Download or read book Standard Handbook of Environmental Engineering written by Robert A. Corbitt and published by McGraw-Hill Professional Publishing. This book was released on 1999 with total page 1364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now revised and updated, the second edition of this book includes new topics including a look at pollution prevention, drinking water standards, volatile organic compounds, indoor air quality and emissions monitoring.
Download or read book Rethinking the Fabric of Geology written by Victor R. Baker and published by Geological Society of America. This book was released on 2013-11-07 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The 50 years since the publication of 'Fabric of Geology,' edited by C.C. Albritton Jr., have seen immense changes in both geology and philosophy of science. 'Rethinking the Fabric of Geology' explores a number of philosophical issues in geology, ranging from its nature as a historical science to implications for geological education"--Provided by publisher.
Download or read book Encyclopedia of Geomorphology written by Andrew Goudie and published by . This book was released on 2004 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first such reference work in thirty-five years, this is a comprehensive guide to both specific landforms and the major types of processes that create them. This two-volume set provides a historical overview of the field, while exploring recent key discoveries about tectonic and climatic changes as well as the use of new techniques such as modeling, remote sensing, and process measurement. Written by a team of expert contributors from over thirty countries, the nearly 700 alphabetically arranged entries are cross-referenced, indexed, and include up-to-date suggestions for further reading. Fully illustrated with over 360 tables and illustrations, this will be the definitive reference source for students, researchers, and practitioners in geomorphology as well as geography, earth science, sedimentology, and environmental science.
Download or read book Introduction to Hydrology written by Warren Viessman and published by Prentice Hall. This book was released on 1996 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text gives a comprehensive look at the field of hydrology and the current issues affecting the discipline currently. Six parts provide in-depth coverage of the hydrologic cycle, hydrologic measurement and monitoring, surface water hydrology, groundwater hydrology, hydrologic modelling and statistical methods. The inclusion of water quality and social dimensions relates science to public policy.
Download or read book Political Ecology written by Paul Robbins and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: An accessible, focused exploration of the field of political ecology The third edition of Political Ecology spans this sprawling field, using grounded examples and careful readings of current literature. While the study of political ecology is sometimes difficult to fathom, owing to its breadth and diversity, this resource simplifies the discussion by reducing the field down into a few core questions and arguments. These points clearly demonstrate how critical theory can make pragmatic contributions to the fields of conservation, development, and environmental management. The latest edition of this seminal work is also more closely focused, with references to recent work from around the world. Further, Political Ecology raises critical questions about “traditional” approaches to environmental questions and problems. This new edition: Includes international work in the field coming out of Europe, Latin America, and Asia Explains political ecology and its tendency to disrupt the environmental research and practice by both advancing and undermining associated fields of study Contains contributions from a wide range of diverse backgrounds and expertise Offers a resource that is written in highly-accessible, straightforward language Outlines the frontiers of the field and frames climate change and the end of population growth with the framework of political ecology An excellent resource for undergraduates and academics, the third edition of Political Ecology offers an updated edition of the guide to this diverse, quickly growing field that is at the heart of how humans shape the world and, in turn, are shaped by it.
Download or read book Fundamentals of Geomorphology written by Richard John Huggett and published by Routledge. This book was released on 2011-03-15 with total page 909 pages. Available in PDF, EPUB and Kindle. Book excerpt: This extensively revised, restructured, and updated edition continues to present an engaging and comprehensive introduction to the subject, exploring the world’s landforms from a broad systems perspective. It covers the basics of Earth surface forms and processes, while reflecting on the latest developments in the field. Fundamentals of Geomorphology begins with a consideration of the nature of geomorphology, process and form, history, and geomorphic systems, and moves on to discuss: structure: structural landforms associated with plate tectonics and those associated with volcanoes, impact craters, and folds, faults, and joints process and form: landforms resulting from, or influenced by, the exogenic agencies of weathering, running water, flowing ice and meltwater, ground ice and frost, the wind, and the sea; landforms developed on limestone; and landscape evolution, a discussion of ancient landforms, including palaeosurfaces, stagnant landscape features, and evolutionary aspects of landscape change. This third edition has been fully updated to include a clearer initial explanation of the nature of geomorphology, of land surface process and form, and of land-surface change over different timescales. The text has been restructured to incorporate information on geomorphic materials and processes at more suitable points in the book. Finally, historical geomorphology has been integrated throughout the text to reflect the importance of history in all aspects of geomorphology. Fundamentals of Geomorphology provides a stimulating and innovative perspective on the key topics and debates within the field of geomorphology. Written in an accessible and lively manner, it includes guides to further reading, chapter summaries, and an extensive glossary of key terms. The book is also illustrated throughout with over 200 informative diagrams and attractive photographs, all in colour.
Download or read book EPA 910 9 written by and published by . This book was released on 1976 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Hydrology and Watershed Management written by International Union of Geodesy and Geophysics. General Assembly and published by Wallingford [England] : International Association of Hydrological Sciences. This book was released on 1987 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superplumes Beyond Plate Tectonics written by David A. Yuen and published by Springer Science & Business Media. This book was released on 2007-06-29 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: This abundantly illustrated book provides a concise overview of our understanding of the entire mantle, its evolution since early differentiation and the consequences of superplumes for earth surface processes. The book’s balanced authorship has produced a state-of-the-science report on the emerging concept of superplumes. This presents a new concept to explain catastrophic events on Earth through geologic time.
