Download or read book Modeling Runoff Levels Over Impervious Surfaces in the Lake Tahoe Basin Using Varying Data Resolution written by Celeste E. Melosh and published by . This book was released on 2015 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Directly connected impervious areas collect and deliver unfiltered runoff to modified and impacted urban waterways. Modeling flow over the landscape is an effective method of observing drainage patterns and predicting peak runoff levels. Model improvements can increase our ability to identify key areas with high runoff and pollutant output. This is a crucial issue in the Lake Tahoe Basin where lakeshore urban development has increased and lake clarity has been declining for years. This study aims to evaluate an integrated LiDAR and GIS-based modeling approach that uses a fine-scaled ground surface and impervious surface connectivity to predict the runoff volumes in the Lake Tahoe Basin. This study produced two rainfall-runoff models for each of three small urban basins in South Lake Tahoe with various levels of impervious surface. A land use classification was generated using NAIP color infrared and LiDAR data. In addition to land use, hydrological characteristics, basins and drainages derived from LiDAR and 10-meter digital elevation models were used in the models. The US Army Corps of Engineers Hydrologic Engineering Center’s Hydrologic Modeling System version 3.5 was used to model runoff peaks and volumes for 10-meter and LiDAR derived inputs for each site. The flow modeled for LiDAR inputs was compared to flow modeled with lower-resolution 10-meter layers as well as observed monitoring data. Flow was successfully modeled for most storms; producing runoff that mimicked observed flow patterns. The most common errors found were lower modeled peak flows in thunderstorms, modeled volumes inconsistent with observed volumes during winter storms and periods of flow found in either the modeled or observed data but not both. In general, the LiDAR and 10-meter models produced similar flow outputs to each other. The 10-meter models produced slightly better peak flow values while the LiDAR produced better volume outputs. However, these differences were small and fell within the margin of error. Although the models did not benefit from the added data resolution, LiDAR will still prove to be a valuable management tool. The LiDAR flow network analysis for this study demonstrates an impressive increase in the visualization of micro scale flow patterns across the urban landscape. This improved ability to pinpoint where and over what surface water flows as it makes its way from the sky to the stream will aid urban basin managers in identifying key pollutant inputs and placing retention sites and diversions.
Download or read book Demonstration of Erosion and Sediment Control Technology written by Charles A. White and published by . This book was released on 1978 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impervious Areas written by De'Etra Jenra Young and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study explored the relationship between increased proportions of imperviousness in a watershed on surface water quality and examined the effectiveness of using remote sensing to systematically and accurately determine impervious surfaces. A supervised maximum likelihood algorithm was used to classify the 2008 high resolution National Agriculture Imagery Program (NAIP) imagery into six classifications. A stratified random sampling scheme was conducted to complete an accuracy assessment of the classification. The overall accuracy was 85%, and the kappa coefficient was 0.80. Additionally, field sampling and chemical analysis techniques were used to examine the relationship between impervious surfaces and water quality in a rainfall simulation parking lot study. Results indicated that day since last rain event had the most significant effect on surface water quality. Furthermore, concrete produced higher dissolved organic carbon (DOC), dissolved organic nitrogen (DON), potassium and calcium in runoff concentrations than did asphalt. Finally, a pollutant loading application model was used to estimate pollutant loadings for three watersheds using two scenarios. Results indicated that national data may overestimate annual pollutant loads by approximately 700%. This study employed original techniques and methodology to combine the extraction of impervious surfaces, utilization of local rainfall runoff data and hydrological modeling to increase planners' and scientists' awareness of using local data and remote sensing data to employ predictive hydrological modeling.
Download or read book Investigations of Stormwater Monitoring Modeling and BMP Effectiveness in the Lake Tahoe Basin written by and published by . This book was released on 2001 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Report written by Timothy B. Minor and published by . This book was released on 2003* with total page 38 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 Urban Runoff Quality Management written by Water Environment Federation and published by ASCE Publications. This book was released on 1998-01-01 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual comprises a holistic view of urban runoff quality management. For the beginner, who has little previous exposure to urban runoff quality management, the manual covers the entire subject area from sources and effects of pollutants in urban runoff through the development of management plans and the design of controls. For the municipal stormwater management agency, guidance is given for developing a water quality management plan that takes into account receiving water use objectives, local climatology, regulation, financing and cost, and procedures for comparing various types of controls for suitability and cost effectiveness in a particular area. This guidance will also assist owners of large-scale urban development projects in cost-effectively and aesthetically integrating water quality control to the drainage plan. The manual is also directed to designers who desire a self-contained unit that discusses the design of specific quality controls for urban runoff.
Download or read book The Newlands Project written by William Joe Simonds and published by . This book was released on 1996 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Hydrology written by Devendra Amatya and published by CABI. This book was released on 2016-09-14 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forests cover approximately 26% of the world's land surface area and represent a distinct biotic community. They interact with water and soil in a variety of ways, providing canopy surfaces which trap precipitation and allow evaporation back into the atmosphere, thus regulating how much water reaches the forest floor as through fall, as well as pull water from the soil for transpiration. The discipline "forest hydrology" has been developed throughout the 20th century. During that time human intervention in natural landscapes has increased, and land use and management practices have intensified. The book will be useful for graduate students, professionals, land managers, practitioners, and researchers with a good understanding of the basic principles of hydrology and hydrologic processes.
Download or read book The Use of Best Management Practices BMPs in Urban Watersheds written by Richard Field and published by DEStech Publications, Inc. This book was released on 2006 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Presents and compares all major stormwater/runoff control strategies ; New data on pollutant removal efficiencies, design, costs, environmental impacts and more ; Where and why to use the best techniques for limiting/monitoring diffuse pollution ; Provides the tools to meet regulations and improve water quality in urban/suburban watersheds"--From publisher's description.
Download or read book California Basins written by United States. National Resources Committee. Water Resources Committee and published by . This book was released on 1937 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Managing Lakes and Reservoirs written by North American Lake Management Society and published by University of Wisconsin Press. This book was released on 2001 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for the lake user, this third edition testifies to the success and the leadership of EPA's Clean Lakes Program.
Download or read book Restoration of Aquatic Ecosystems written by National Research Council and published by National Academies Press. This book was released on 1992-01-01 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aldo Leopold, father of the "land ethic," once said, "The time has come for science to busy itself with the earth itself. The first step is to reconstruct a sample of what we had to begin with." The concept he expressedâ€"restorationâ€"is defined in this comprehensive new volume that examines the prospects for repairing the damage society has done to the nation's aquatic resources: lakes, rivers and streams, and wetlands. Restoration of Aquatic Ecosystems outlines a national strategy for aquatic restoration, with practical recommendations, and features case studies of aquatic restoration activities around the country. The committee examines: Key concepts and techniques used in restoration. Common factors in successful restoration efforts. Threats to the health of the nation's aquatic ecosystems. Approaches to evaluation before, during, and after a restoration project. The emerging specialties of restoration and landscape ecology.
Download or read book Growing Smart Legislative Guidebook written by William Klein and published by DIANE Publishing. This book was released on 1998-06 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A guide to forest water management written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2021-08-24 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many people worldwide lack adequate access to clean water to meet basic needs, and many important economic activities, such as energy production and agriculture, also require water. Climate change is likely to aggravate water stress. As temperatures rise, ecosystems and the human, plant, and animal communities that depend on them will need more water to maintain their health and to thrive. Forests and trees are integral to the global water cycle and therefore vital for water security – they regulate water quantity, quality, and timing and provide protective functions against (for example) soil and coastal erosion, flooding, and avalanches. Forested watersheds provide 75 percent of our freshwater, delivering water to over half the world’s population. The purpose of A Guide to Forest–Water Management is to improve the global information base on the protective functions of forests for soil and water. It reviews emerging techniques and methodologies, provides guidance and recommendations on how to manage forests for their water ecosystem services, and offers insights into the business and economic cases for managing forests for water ecosystem services. Intact native forests and well-managed planted forests can be a relatively cheap approach to water management while generating multiple co-benefits. Water security is a significant global challenge, but this paper argues that water-centered forests can provide nature-based solutions to ensuring global water resilience.
Download or read book Stream Corridor Restoration written by and published by National Technical Info Svc. This book was released on 1998 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is a cooperative effort among fifteen Federal agencies and partners to produce a common reference on stream corridor restoration. It responds to a growing national and international interest in restoring stream corridors.
Download or read book Drinking Water from Forests and Grasslands written by and published by . This book was released on 2000 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
