Download or read book E Coli Distribution and Streambed Processes of the Greybull River WY written by Corey J. Beaugh and published by . This book was released on 2012 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Escherichia coli (E. coli) is used as an indicator species for sewage or animal waste contamination in water systems. Currently, Wyoming is initiating TMDLs to decrease E. coli concentrations in the Greybull River through the implementation of BMPs. Land use in the Greybull watershed (1,100 mi2) is predominantly irrigated agriculture and ranching, with an abundant natural wildlife population present; these are the assumed primary sources of E. coli loading along with human/septic. Initiating BMPs on these sources may not effectively reduce E. coli concentrations observed in the thalweg if E. coli is originating from secondary sources, such as pockets of fine, in-channel sediment. High discharge resulting from the onset of seasonal snowmelt runoff can re-suspend and transport sediment and bacteria from the streambed, as well as wash overbank sediment/bacteria back into the channel. We investigated E. coli levels in the water surface, throughout the water column, and in channel bed sediments bi-monthly from May-September 2009 and 2010. Results showed that flow conditions at the peak of snowmelt runoff, had a profound effect on E. coli levels. Before "peak-flow" conditions (baseflow), E. coli concentrations in the water column were generally low, while E. coli levels in the sediment were relatively high, with the greatest proportion of clay-particles being observed. At or near peak-flow conditions, E. coli concentrations in the water column were the greatest, while levels in the sediment were the lowest, with clay-particles being flushed out of the system. Late-summer baseflow conditions showed a decline in E. coli concentrations in the water column, and a gradual incline in both E. coli levels in the sediment and amount of clay-particles in the channel bed. Precipitation acted to drastically increase E. coli concentrations in the water column after peak-flow, but before peak-flow had a negligible or negative effect on E. coli levels.

Download or read book Review of Riparian Buffer Zone Effectiveness written by Stephanie Parkyn and published by . This book was released on 2003 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is to review and summarise published research on the efficiency and management of riparian buffer zones (RBZ) with respect to the attenuation of sediment and nutrients, and biodiversity enhancement. While there have been numerous studies on the efficiency of RBZ with respect to sediment and nutrients, many of these studies have been small-scale and site-specific. Therefore, a review of these studies needs to consider an assessment of the catchment scale factors that influence the effectiveness of RBZ in attenuating catchment loads.

Download or read book Geological Survey Water supply Paper written by and published by . This book was released on 1950 with total page 1884 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1988 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ground water Geology of Bexar County Texas written by Ted Arnow and published by . This book was released on 1963 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hired Farm Workers written by United States. Employment Standards Administration and published by . This book was released on 1971 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geological Survey Research 1964 written by Geological Survey (U.S.) and published by . This book was released on 1964 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Unsteady Transonic Flow written by Mårten T. Landahl and published by Courier Dover Publications. This book was released on 2019-04-17 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This classic monograph on unsteady transonic flow — the flow of air encountered at speeds at or near the speed of sound — is of continuing interest to students and professionals in aerodynamics, fluid dynamics, and other areas of applied mathematics. After a brief Introduction, Swedish physicist Mårten T. Landahl presents a chapter in which the two-dimensional solution is derived, succeeded by a discussion of its relation to the subsonic and supersonic solutions. Three chapters on low aspect ratio configurations follow, covering triangular wings and similar planforms with curved leading edges, rectangular wings, and cropped delta wings, and low aspect ratio wing-body combinations. The treatment concludes with a consideration of the experimental determination of air forces on oscillating wings at transonic speeds.

Download or read book Index of Publications written by United States. Army. Corps of Engineers and published by . This book was released on 1966 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cottonseed Quality written by and published by . This book was released on 1974 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radioisotopes in Hydrology written by and published by . This book was released on 1963 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geological Bulletin written by and published by . This book was released on 1956 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ICO Pamphlet written by Federal Council for Science and Technology (U.S.). Committee on Oceanography and published by . This book was released on 1964 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radiological Health Data written by and published by . This book was released on 1963 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: