River Profiles Book in PDF, ePub and Kindle version is available to download in english. Read online anytime anywhere directly from your device. Click on the download button below to get a free pdf file of River Profiles book. This book definitely worth reading, it is an incredibly well-written.
Centuries of mismanagement and destructive development have gravely harmed American waterways, with significant consequences for the ecosystems and communities built around them. But a range of passionate and committed people have stepped up to restore streams and rivers around the United States. A husband-and-wife scientist team in Pennsylvania lead projects to unclog the sediment left by early colonists’ dams. Members of the Tulalip Tribes in western Washington State bring beavers back to headwater streams. A public servant in Milwaukee drives the sewer department to remove concrete channels and reduce flood risk. Community activists in Atlanta push for environmental justice in river restoration. Telling these stories and many more, Pete Hill—a twenty-year veteran of the field of watershed restoration—provides a deep dive into the world of river and stream conservation. He profiles the practitioners, scientists, and activists from all walks of life who take part in restoration efforts, exploring their differing, sometimes controversial approaches. Through their stories, Hill illustrates the challenges and rewards of river restoration and the evolving scientific understanding in the field. Underscoring the need for a variety of strategies adapted to different local contexts, he shows that new ideas have come from a wide range of people—from those operating the machinery to those researching stream ecology—and that Indigenous knowledge offers vital resources. At once personal and learned, insightful and inspiring, this book shines a light on the people working to heal our streams and rivers.
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 107. Bedrock river channels are sites of primary erosion in the landscape, fixing the baselevel for all points upstream. This volume provides for the first time an integrated view of the characteristics and operation of this important, though hitherto neglected, class of channels. Examples are provided from several continents and cover a wide range of spatial scales from the large river basins (such as the Colorado River in the United States and the Indus River in Pakistan) down to reach scales and individual sites. Likewise the geologic timescales considered range from erosion and transportation during individual flows to accumulated effects over periods of tens of millions of years.
Water-Related Natural Disasters in Mountainous Area by Jia-wen Zhou,Jie Dou,Xudong Fu,Biswajeet Pradhan,Qihua Ran,Xiekang Wang,Hiromitsu Yamagishi,Tao Zhao Pdf
Knowledge Guided Machine Learning by Anuj Karpatne,Ramakrishnan Kannan,Vipin Kumar Pdf
Given their tremendous success in commercial applications, machine learning (ML) models are increasingly being considered as alternatives to science-based models in many disciplines. Yet, these "black-box" ML models have found limited success due to their inability to work well in the presence of limited training data and generalize to unseen scenarios. As a result, there is a growing interest in the scientific community on creating a new generation of methods that integrate scientific knowledge in ML frameworks. This emerging field, called scientific knowledge-guided ML (KGML), seeks a distinct departure from existing "data-only" or "scientific knowledge-only" methods to use knowledge and data at an equal footing. Indeed, KGML involves diverse scientific and ML communities, where researchers and practitioners from various backgrounds and application domains are continually adding richness to the problem formulations and research methods in this emerging field. Knowledge Guided Machine Learning: Accelerating Discovery using Scientific Knowledge and Data provides an introduction to this rapidly growing field by discussing some of the common themes of research in KGML using illustrative examples, case studies, and reviews from diverse application domains and research communities as book chapters by leading researchers. KEY FEATURES First-of-its-kind book in an emerging area of research that is gaining widespread attention in the scientific and data science fields Accessible to a broad audience in data science and scientific and engineering fields Provides a coherent organizational structure to the problem formulations and research methods in the emerging field of KGML using illustrative examples from diverse application domains Contains chapters by leading researchers, which illustrate the cutting-edge research trends, opportunities, and challenges in KGML research from multiple perspectives Enables cross-pollination of KGML problem formulations and research methods across disciplines Highlights critical gaps that require further investigation by the broader community of researchers and practitioners to realize the full potential of KGML
Floods and Flood Control by Tennessee Valley Authority Pdf
Floods and Flood Control is one of a series of special technical reports covering important phases of the work of TVA's Office of Engineering. The principle concern of the report is the technical engineering aspects of floods and flood control of the Tennessee River Basin and the effect of this control downstream on the lower Ohio and Mississippi Rivers.
Jonathan A. Czuba,Christopher S. Magirl,Christiana R. Czuba,Christopher A. Curran,Kenneth H. Johnson,Theresa D. Olsen,Halley K. Kimball,Casey C. Gish
Author : Jonathan A. Czuba,Christopher S. Magirl,Christiana R. Czuba,Christopher A. Curran,Kenneth H. Johnson,Theresa D. Olsen,Halley K. Kimball,Casey C. Gish Publisher : U.S. Department of the Interior, U.S. Geological Survey Page : 150 pages File Size : 48,8 Mb Release : 2012-12-07 Category : Electronic ISBN : 8210379456XXX
Geomorphic analysis of the river response to sedimentation downstream of Mount Rainier, Washington by Jonathan A. Czuba,Christopher S. Magirl,Christiana R. Czuba,Christopher A. Curran,Kenneth H. Johnson,Theresa D. Olsen,Halley K. Kimball,Casey C. Gish Pdf
A study of the geomorphology of rivers draining Mount Rainier, Washington, was completed to identify sources of sediment to the river network; to identify important processes in the sediment delivery system; to assess current sediment loads in rivers draining Mount Rainier; to evaluate if there were trends in streamflow or sediment load since the early 20th century; and to assess how rates of sedimentation might continue into the future using published climate-change scenarios. Rivers draining Mount Rainier carry heavy sediment loads sourced primarily from the volcano that cause acute aggradation in deposition reaches as far away as the Puget Lowland. Calculated yields ranged from 2,000 tonnes per square kilometer per year [(tonnes/km2)/yr] on the upper Nisqually River to 350 (tonnes/km2)/yr on the lower Puyallup River, notably larger than sediment yields of 50–200 (tonnes/km2)/yr typical for other Cascade Range rivers. These rivers can be assumed to be in a general state of sediment surplus. As a result, future aggradation rates will be largely influenced by the underlying hydrology carrying sediment downstream. The active-channel width of rivers directly draining Mount Rainier in 2009, used as a proxy for sediment released from Mount Rainier, changed little between 1965 and 1994 reflecting a climatic period that was relatively quiet hydrogeomorphically. From 1994 to 2009, a marked increase in geomorphic disturbance caused the active channels in many river reaches to widen. Comparing active-channel widths of glacier-draining rivers in 2009 to the distance of glacier retreat between 1913 and 1994 showed no correlation, suggesting that geomorphic disturbance in river reaches directly downstream of glaciers is not strongly governed by the degree of glacial retreat. In contrast, there was a correlation between active-channel width and the percentage of superglacier debris mantling the glacier, as measured in 1971. A conceptual model of sediment delivery processes from the mountain indicates that rockfalls, glaciers, debris flows, and main-stem flooding act sequentially to deliver sediment from Mount Rainier to river reaches in the Puget Lowland over decadal time scales. Greater-than-normal runoff was associated with cool phases of the Pacific Decadal Oscillation. Streamflow-gaging station data from four unregulated rivers directly draining Mount Rainier indicated no statistically significant trends of increasing peak flows over the course of the 20th century. The total sediment load of the upper Nisqually River from 1945 to 2011 was determined to be 1,200,000±180,000 tonnes/yr. The suspended-sediment load in the lower Puyallup River at Puyallup, Washington, was 860,000±300,000 tonnes/yr between 1978 and 1994, but the long-term load for the Puyallup River likely is about 1,000,000±400,000 tonnes/yr. Using a coarse-resolution bedload transport relation, the long-term average bedload was estimated to be about 30,000 tonnes/yr in the lower White River near Auburn, Washington, which was four times greater than bedload in the Puyallup River and an order of magnitude greater than bedload in the Carbon River. Analyses indicate a general increase in the sediment loads in Mount Rainier rivers in the 1990s and 2000s relative to the time period from the 1960s to 1980s. Data are insufficient, however, to determine definitively if post-1990 increases in sediment production and transport from Mount Rainier represent a statistically significant increase relative to sediment-load values typical from Mount Rainier during the entire 20th century. One-dimensional river-hydraulic and sediment-transport models simulated the entrainment, transport, attrition, and deposition of bed material. Simulations showed that bed-material loads were largest for the Nisqually River and smallest for the Carbon River. The models were used to simulate how increases in sediment supply to rivers transport through the river systems and affect lowland reaches. For each simulation, the input sediment pulse evolved through a combination of translation, dispersion, and attrition as it moved downstream. The characteristic transport times for the median sediment-size pulse to arrive downstream for the Nisqually, Carbon, Puyallup, and White Rivers were approximately 70, 300, 80, and 60 years, respectively.
River, Coastal and Estuarine Morphodynamics by Gary Parker,Marcelo H. Garcia Pdf
The proceedings of the 4th Symposium on River, Coastal and Estuarine Morphodynamics offers the latest research results concerning quantitative modelling of the interaction of water and sediment and the shapes this interaction makes in rivers, watersheds, estuaries, the coast, the continental shelf and the deep sea. Morphodynamics is the study of the evolution of landscape and seascape features, from small scale to large.