Download or read book Relations Among Floodplain Water Levels Instream Dissolved oxygen Conditions and Streamflow in the Lower Roanoke River North Carolina 1997 2001 written by Jerad Bales and published by . This book was released on 2004 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relations among floodplain water levels instream dissolved oxygen conditions and streamflow in the lower Roanoke River North Carolina 1997 2001 written by and published by DIANE Publishing. This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water resources Investigations Report written by Jerad Bales and published by . This book was released on 2004 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water resources Investigations Report written by and published by . This book was released on 2003 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Flood Control and Other Reservoir Operations on the Water Quality of the Lower Roanoke River North Carolina written by U. S. Department U.S. Department of the Interior and published by Createspace Independent Publishing Platform. This book was released on 2014-04-26 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the development and application of a hydrodynamic model an a water-quality model to establish links between operations for flood control and hydropower, and downstream water quality.

Download or read book Low flow Characteristics and Profiles for Selected Streams in the Roanoke River Basin North Carolina written by J. Curtis Weaver and published by . This book was released on 1996 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantifying Channel Maintenance Instream Flows written by Larry J. Schmidt and published by . This book was released on 2004 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reservoir system Model for the Willamette River Basin Oregon written by James O. Shearman and published by . This book was released on 1976 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: For nearly half a century the Willamette River in Oregon experienced severe dissolved-oxygen problems related to large loads of organically rich waste waters from industries and municipalities. Since the mid-1950 's dissolved oxygen quality has gradually improved owing to low-flow augmentation, the achievement of basinwide secondary treatment, and the use of other waste-management practices. As a result, summer dissolved-oxygen levels have increased, salmon runs have returned, and the overall effort is widely regarded as a singular water-quality success. To document the improved dissolved-oxygen regimen, the U.S. Geological Survey conducted intensive studies of the Willamette during the summer low-flow seasons of 1973 and 1974. During each summer the mean daily dissolved-oxygen levels were found to be higher than 5 milligrams per liter throughout the river. Because of the basinwide secondary treatment, carbonaceous deoxygenation rates were low. In addition, almost half of the biochemical oxygen demand entering the Willamette was from diffuse (nonpoint) sources rather than outfalls. These results indicated that point-source biochemical oxygen demand was no longer the primary cause of dissolved-oxygen depletion. Instead, the major causes of deoxygenation were nitrification in a shallow ' surface active ' reach below Salem and an anomalous oxygen demand (believed to be primarily of benthal origin) in Portland Harbor.

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 Evaluation of Water Quality of Chicago Area Streams written by Harza Engineering Company and published by . This book was released on 1976 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Riparian Areas written by National Research Council and published by National Academies Press. This book was released on 2002-10-10 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.

Download or read book Water and Streambed Sediment Quality and Ecotoxicology of a Stream Along the Blue Ridge Parkway Adjacent to a Closed Landfill Near Roanoke Virginia 1999 written by Donna Belval Ebner and published by . This book was released on 2004 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book River restoration a strategic approach to planning and management written by Speed, Robert and published by UNESCO Publishing. This book was released on 2016-09-19 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estuarine Processes Uses stresses and adaptation to the estuary written by Martin L. Wiley and published by . This book was released on 1976 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dams Fish and Fisheries written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2001 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of free longitudinal passage of river fauna is stressed.

Download or read book Preservation of Instream Flows written by Verne W. House and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Freshwater Fish Distribution written by Tim M. Berra and published by University of Chicago Press. This book was released on 2008-09-15 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: With more than 29,000 species, fishes are the most diverse group of vertebrates on the planet. Of that number, more than 12,000 species are found in freshwater ecosystems, which occupy less than 1 percent of the Earth’s surface and contain only 2.4 percent of plant and animal species. But, on a hectare-for-hectare basis, freshwater ecosystems are richer in species than more extensive terrestrial and marine habitats. Examination of the distribution patterns of fishes in these fresh waters reveals much about continental movements and climate changes and has long been critical to biogeographical studies and research in ecology and evolution. Tim Berra’s seminal resource, Freshwater Fish Distribution,maps the 169 fish families that swim in fresh water around the world. Each family account includes the class, subclass, and order; a pronunciation guide to the family name; life cycle information; and interesting natural history facts. Each account is illustrated, many with historical nineteenth-century woodcuts. Now available in paperback, this heavily cited work in ichthyology and biogeography will serve as a reference for students, a research support for professors, and a helpful guide to tropical fish hobbyists and anglers.