Analysis of Watershed Sediment Yields by Reservoir Deposits PDF Download

Author: Hsieh Wen Shen
Publisher:
ISBN:
Category : Sediment transport
Languages : en
Pages : 314

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Book Description

Author: Doann M. Hamilton
Publisher:
ISBN:
Category : Reservoir sedimentation
Languages : en
Pages : 0

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Book Description

Author: Anton J. Schleiss
Publisher: CRC Press
ISBN: 1315736918
Category : Technology & Engineering
Languages : en
Pages : 300

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Book Description
Despite the mechanisms of reservoir sedimentation being well known for a long time, sustainable and preventive measures are rarely taken into consideration in the design of new reservoirs. To avoid operational problems of powerhouses, sedimentation is often treated for existing reservoirs with measures which are efficient only for a limited time.Th

Author: Richard Frederick Hadley
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 232

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Book Description

Author: G.W. Annandale
Publisher: Elsevier
ISBN: 9780080870205
Category : Science
Languages : en
Pages : 220

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Book Description
Research on reservoir sedimentation in recent years has been aimed mainly at water resources projects in developing countries. These countries, especially in Africa, often have to cope with long droughts, flash floods and severe erosion problems. Large reservoir capacities are required to capture water provided by flash floods so as to ensure the supply of water in periods of drought. The problem arising however is that these floods, due to their tremendous stream power, carry enormous volumes of sediment which, due to the size of reservoirs, are virtually deposited in toto in the reservoir basin, leading to fast deterioration of a costly investment. Accurate forecasting of reservoir behaviour is therefore of the utmost importance. This book fills a gap in current literature by providing in one volume comprehensive coverage of techniques required to practically investigate the effects sediment deposition in reservoirs has on the viability of water resources projects. Current techniques for practically estimating sediment yield from catchments, estimating the volume of sediment expected to deposit in reservoirs, predicting sediment distribution and calculating scour downstream of reservoirs are evaluated and presented. The liberal use of diagrams and graphs to explain the various techniques enhances understanding and makes practical application simple. A major feature of the book is the application of stream power theory to explain the process of reservoir sedimentation and to develop four new methods for predicting sediment distribution in reservoirs. The book is primarily directed at practising engineers involved in the planning and design of water resources projects and at post-graduate students interested in this field of study.

Author: Farris E. Dendy
Publisher:
ISBN:
Category : Reservoir sedimentation
Languages : en
Pages : 12

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Book Description

Author: Travis Duane Bayes
Publisher:
ISBN:
Category : Erosion
Languages : en
Pages : 0

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Book Description

Author: Gregory L. Morris
Publisher: McGraw Hill Professional
ISBN: 9780070433021
Category : Science
Languages : en
Pages : 864

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Book Description
Focusing on reservoir sedimentation management and control, this work defines the nature and severity of sedimentation, reviews relevant physical processes, describes techniques used to combat sedimentation, and presents detailed case studies.

Author: David Phillip Mau
Publisher:
ISBN:
Category :
Languages : en
Pages : 20

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Book Description

Author: Kristofer C. Mann
Publisher:
ISBN:
Category : Cuyahoga River (Ohio)
Languages : en
Pages : 275

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Book Description
The 17.4 m tall Ohio Edison Dam was constructed in 1912 on the Cuyahoga River near the city of Akron, Ohio. The dam was installed for hydroelectric power and to provide cooling water storage for a coal-fired power plant. During the past century, over 6 m of sediment accumulated in the low-velocity dam pool. A dam pool sediment volume of 765,000 m3 was calculated from geographical information system (GIS) analysis of bathymetric maps from 1918 and 2010, and the thickness of sediment determined by coring. Twelve sediment cores were collected to study the nature and spatial variability of the dam pool sediment deposit. Sediment density, grain size, organic content and magnetic mineral content trace metal concentrations reveal changes in sedimentation within the dam pool. Fly-ash, derived from the burning of fossil fuels, is present in large quantity downstream from the former Ohio Edison coal-fired power plant, whereas it is present in low quantities upstream. Core 4 was 210Pb-dated in order to interpret the sediment deposit in terms of past anthropogenic activities. In addition, combining the sediment age model with sediment density and GIS sediment volume analysis allowed changes in mass accumulation rate and sediment yield to be determined. The dam pool sediment deposit was subdivided into three time intervals. The first time period (1912-1928) was termed the Early Years and is characterized by brown mud having low amounts of fly-ash, elevated trace metal concentrations and a high sediment yield. The second time period (1928-1977) was termed the Burning River and is characterized by dark gray mud having abundant fly-ash layers, high but variable metals, and high magnetic concentration. The third time period (1977-2011) was termed the Later Years and is characterized by dark brown mud with low amounts of fly-ash, declining trace metals, low magnetic concentration, and an increasing sediment yield. Since 1977, the sediment quality has improved in response to the Clean Air Act (1970) and the Clean Water Act (1972). The sediment yield has generally increased since 1928. Between 2004 and 2008 there is a pronounced increase in sediment yield attributed to increased upstream erosion following the removal of the Munroe Falls Dam in 2005 and increased extreme flow events since 2003. The Ohio Edison Dam is being considered for removal as a means of river restoration in the Middle Cuyahoga River. Based on the range of sediment mass accumulation within the Ohio Edison Dam pool since 2001, it is projected that the downstream sediment load will increase by about 4,100-8,400 tonnes/yr of sediment or an average of 6,300 tonnes/yr once the Ohio Edison Dam is removed. The increased sediment flux from the Middle Cuyahoga River will increase the need for dredging at the Port of Cleveland and change sedimentary conditions in the Lower Cuyahoga River.