Sediment Transport in Irrigation Canals

Sediment Transport in Irrigation Canals

Author: Herman Depeweg

Publisher: CRC Press

Published: 2014-10-06

Total Pages: 309

ISBN-13: 1315747502

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Sediment transport in irrigation canals influences to a great extent the sustainability of an irrigation system. Unwanted erosion or deposition will not only increase maintenance costs, but may also lead to unfair, unreliable and unequitable distribution of irrigation water to the end users. Proper knowledge of the characteristics, including behaviour and transport of sediment will help to design irrigation systems, plan effi cient and reliable water delivery schedules, to have a controlled deposition of sediments, to estimate and arrange maintenance activities, etc. The main aim of these lecture notes is to present a detailed analysis and physical and mathematical descriptions of sediment transport in irrigation canals and to describe the mathematical model SETRIC that predicts the sediment transport, deposition and entrainment rate as function of time and place for various flow conditions and sediment inputs. The model is typically suited for the simulation of sediment transport under the particular conditions of non-wide irrigation canals where the flow and sediment transport are strongly determined by the operation of the flow control structures. The lecture notes will contribute to an improved understanding of the behaviour of sediments in irrigation canals. They will also help to decide on the appropriate design of the system, the water delivery plans, to evaluate design alternatives and to achieve an adequate and reliable water supply to the farmers.


Sediment Transport in Irrigation Canals

Sediment Transport in Irrigation Canals

Author: Shivaji Shende

Publisher:

Published: 2015-03

Total Pages: 0

ISBN-13: 9781681170091

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An irrigation canal is a waterway, often man-made or enhanced, built for the purpose of carrying water from a source such as a lake, river, or stream, to soil used for farming or landscaping. The engineering concept of efficiency at different levels of a canal system is important for planning, designing and even operating a canal irrigation system.


Contaminated Sediments in Freshwater Systems

Contaminated Sediments in Freshwater Systems

Author: Frank R. Spellman

Publisher: CRC Press

Published: 2016-10-03

Total Pages: 399

ISBN-13: 1498775187

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Assessment of freshwater sediments can determine whether chemical concentrations are sufficient to cause adverse effects on aquatic organisms or organisms higher in the food chain, including humans. This book presents methods for assessing sediments and includes an integration of physical, chemical, and biological information. It examines the elements of quality assurance and control programs, considerations for the conduct of field surveys, screening-level analyses, chemical analyses, toxicity tests for assessing biological impacts, assessments of benthic invertebrate community structure, surveys of fish tumors and abnormalities, and data presentation and interpretation techniques.


A New Approach to Sediment Transport in the Design and Operation of Irrigation Canals

A New Approach to Sediment Transport in the Design and Operation of Irrigation Canals

Author: Herman Depeweg

Publisher: CRC Press

Published: 2007-04-05

Total Pages: 236

ISBN-13: 0203945816

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The transport of sediment greatly influences the sustainability of an irrigation system. Erosion and deposition not only increase maintenance costs, but may result in an inequitable and inadequate distribution of irrigation water. Understanding the behaviour and transport of sediment allows efficient planning and reliable water delivery schedules,


Progress in River Engineering and Hydraulic Structures

Progress in River Engineering and Hydraulic Structures

Author: Mohammed Al-Baghdadi

Publisher: Createspace Independent Publishing Platform

Published: 2018-02-09

Total Pages: 556

ISBN-13: 9781985202061

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Water is the essential element that all life-forms on our planet are dependent on. It is impossible to assess its value because it is equal to the life itself. Humans realized this fact long time ago and they always endeavored to control and manage water resources as they were afflicted by the drought and flood events throughout history. Therefore, the engineering of water resources and hydraulic structures is as old as the human civilization. The earliest known engineered irrigation system was developed in ancient Mesopotamia (Iraq); an advanced system of dikes, dams and canals was built for the purpose of irrigation and flood control. The main water sources for this system were the rivers Euphrates and Tigris. During plant growing seasons, the flow of water was properly regulated. Each farmer was allowed a certain amount of water, which was diverted from the canal into an irrigation ditch. The oldest known engineering plan of such an irrigation system has been documented on some unique and ancient clay tablet which has been discovered in Babylonia (belonging to 1684-1647 BC). It shows a map of canals with cuneiform scripts providing details about names, lengths, widths and depths of the canals and the volume of sediment to be dredged. Mesopotamians have acquired the expertise of maintaining their irrigation system over thousands of years. This contribution was a major step toward the modernization of humanity. The Water Research Center (located in Iraq), which is dedicated to the exchange of knowledge and technology in the water sector, has been inspired by those ancient engineers, hence published this book series entitled "Progress in River Engineering & Hydraulic Structures". It is intended to be a worldwide platform for the contemporary research in this field. Chapters of this series demonstrate the stringent need for new solutions and technologies in the subject of river engineering and hydraulic structures. The chapters cover a wide range of problems related to river regime and training works, performance of different kinds of hydraulic structures and any related multidisciplinary research. We believe that through the collaboration of researchers, engineers and professionals, we can accelerate the development in these areas. The book is aimed to serve as a reference for both researchers and postgraduate students.


Reservoir Sedimentation

Reservoir Sedimentation

Author: G.W. Annandale

Publisher: Elsevier

Published: 1987-01-01

Total Pages: 233

ISBN-13: 0080870201

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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.