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Introductory technical guidance for professional engineers interested in reservoir sedimentation. Here is what is discussed: 1. INTRODUCTION, 2. BASIC OBJECTIVES, 3. PLANNING AND DESIGN OBJECTIVES, 4. FIELD FACILITIES, 5. TOPOGRAPHIC MAPS OF RESERVOIR AREA, 6. CLASSIFICATION OF SEDIMENT RANGES, 7. NUMBERING SEDIMENT RANGES, 8. LOCATING AND SPACING RANGES, 9. MODIFICATIONS TO EXISTING RANGE NETWORKS, 10. RANGE MONUMENTS AND SUPPLEMENTAL MARKERS, 11. PERMANENT MONUMENTS, 12. SEMI-PERMANENT RANGE MARKERS, 13. TEMPORARY MARKERS, 14. INSPECTION AND MAINTENANCE OF FIELD FACILITIES, 15. REMOVAL OF VEGETATION ALONG RANGE LINES, 16. BANK LINE SURVEY DATA, 17. SEDIMENT SURVEY GRIDS, 18. COMPONENTS OF RESERVOIR SEDIMENTATION SURVEYS, 19. FIELD MEASUREMENTS, 20. LABORATORY ANALYSES, 21. PROCESSING FIELD DATA, 22. ANALYSIS OF FIELD DATA, 23. INITIAL SURVEYS, 24. USE OF ECHO-SOUNDERS IN INITIAL SURVEYS, 25. PRESERVATION OF SURVEY RECORDS, 26. RESURVEYS, 27. FIELD SURVEY METHODS, 28. ALTERNATIVE METHODS, 29. SEDIMENT SPECIFIC WEIGHT AND GRADATION OF DEPOSITS.
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.
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.
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
The role of storage reservoirs in water resource development is described and estimated on a world wide basis. The physical phenomena related to reservoir situation are described to provide a basic understanding of the problem. Finally, a fairly completed survey is presented of the design and operational strategies that can be used to alleviate reservoir situation are described to provide a basic understanding of the problem.