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"Paudel, Krishna P., author"
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Sediment Transport in Irrigation Canals
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.
eBook
Knowledge systems and natural resources
KNOWLEDGE SYSTEMS AND NATURAL RESOURCES. Management, Policy, and Institutions in Nepal. Book(s) 7 of 211. KNOWLEDGE SYSTEMS AND NATURAL RESOURCES. Management, Policy, and Institutions in Nepal. Edited by Hemant R. Ojha, Netra P. Timsina, Ram B. Chhetri, and Krishna P. Paudel. Foundation Books/IDRC 2007. ISBN 978-81-7596-563-8. e-ISBN 978-1-55250-371-3. 182 pp. In recent years, knowledge systems have become a key area of concern for researchers, policy-makers, and development activists. Knowledge Systems and Natural Resources is a unique collection of case studies from Nepal. It provides rich and incisive insights into critical social processes and deliberative governance. It analyzes how knowledge is produced, disseminated, and applied in various aspects of natural resource governance in Nepal. The book challenges the dichotomy between traditional and scientific knowledge. It proposes to differentiate among systems of knowledge on the basis of the political standing of social actors engaged in natural resource governance. It further proposes that change in governance hinges on how the diverse systems of knowledge come into deliberative interface and to what extent the unequal distribution of power and knowledge resources in society constrain the process of deliberation. This book will be of great interest to development policy-makers, governance specialists, researchers, academics, development advisors, social activists and students of social and political sciences and natural resource management.
eBook