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Planning and Evaluation of Irrigation Projects

Book Description

Planning and Evaluation of Irrigation Projects: Methods and Implementation presents the considerations, options and factors necessary for effective implementation of irrigation strategies, going further to provide methods for evaluating the efficiency of systems-in-place for remedial correction as needed.

As the first book to take this lifecycle approach to agricultural irrigation, it includes real-world examples not only on natural resource availability concerns, but also on financial impacts and measurements.

With 21 chapters divided into two sections, this book is a valuable resource for agricultural and hydrology engineers, conservation scientists and anyone seeking to implement and maintain irrigation systems.

  • Uses real-world examples to present practical insights
  • Incorporates both planning and evaluation for full-scope understanding and application
  • Illustrates both potential benefits and limitations of irrigation solutions
  • Provides potential means to increase crop productivity that can result in improved farm income

Table of Contents

  1. Cover image
  2. Title page
  3. Table of Contents
  4. Dedication
  5. Copyright
  6. Preface
  7. Acknowledgments
  8. Chapter 1. Introduction
    1. 1.1. Irrigation: Definition, Functions, Advantages, and Disadvantages
    2. 1.2. Irrigation Planning
    3. 1.3. Need of Evaluation: Benchmarking and Water Auditing
    4. 1.4. Organization of This Book
  9. Chapter 2. Irrigation Project Planning
    1. 2.1. Planning Stages
    2. 2.2. Investigation Phases and Data Collection
    3. 2.3. Scope of Work for Planning or Prefeasibility Report Stage
    4. 2.4. Scope of Work for Detailed Investigation or Detailed Project Report Stage
    5. 2.5. Factors Affecting the Development of Irrigation Facilities
  10. Chapter 3. Basic Hydraulic Computations
    1. 3.1. Basic Terminology
    2. 3.2. Conservation Laws
    3. 3.3. Hydraulic Jump
    4. 3.4. Computation of Critical Depth
    5. 3.5. Uniform Flow Computation
    6. 3.6. Gradually Varied Flow
    7. 3.7. Concluding Remarks
  11. Chapter 4. Hydrologic Computations
    1. 4.1. Analyses of Rainfall Data
    2. 4.2. Hydrologic Cycle
    3. 4.3. Hydrologic Equation and Water Balance
    4. 4.4. Estimation of Reservoir Inflow Using Observed Data
    5. 4.5. Estimate of Catchment Yield Using Rainfall–Runoff Modeling
    6. 4.6. Inflow Estimation in Multi-Reservoir Case
    7. 4.7. Design-Flood Estimation for Fixing the Spillway Capacity
    8. 4.8. Reservoir Sizing
    9. 4.9. Reservoir Sedimentation
    10. 4.10. Concluding Remarks
  12. Chapter 5. Estimation of Lake Evaporation and Potential Evapotranspiration
    1. 5.1. Estimation of Lake Evaporation
    2. 5.2. Estimation of Reference Crop Evapotranspiration
    3. 5.3. Concluding Remarks
  13. Chapter 6. Estimating Irrigation Design Parameters
    1. 6.1. Estimation of Crop Water Requirement
    2. 6.2. Irrigation Water Requirement
    3. 6.3. Irrigation Efficiency
    4. 6.4. Irrigation Command Area
    5. 6.5. Determination of Irrigated Command Area, Project Duty, Duty at Outlet Head and Canal Head, Water Allowance, and Canal Capacity
  14. Chapter 7. Design of Irrigation Canals
    1. 7.1. Typical Canal Geometry
    2. 7.2. Design of Lined Canals
    3. 7.3. Design of Stable Unlined Canals Using the Regime Theory
    4. 7.4. Design of Unlined Canal Using Tractive Force Approach
    5. 7.5. Determining L-Section of the Canal
    6. 7.6. Development of Draw-Off Statement for the Canal
    7. 7.7. Concluding Remarks
  15. Chapter 8. Design of Canal Outlets and Their Calibration
    1. 8.1. Classification of Outlets
    2. 8.2. Performance of Module or Outlet
    3. 8.3. Design of Outlets: Discharge Through Outlets
    4. 8.4. Calibration of Outlet
    5. 8.5. Concluding Remarks
  16. Chapter 9. Canal Architecture
    1. 9.1. Canal Classification
    2. 9.2. Command Area Survey
    3. 9.3. Canal Alignment
    4. 9.4. Marking and Finalization of Area Proposed to Be Irrigated by Each Channel
    5. 9.5. Design of Canal
    6. 9.6. Concluding Remarks
  17. Chapter 10. Irrigation Methods
    1. 10.1. Methods of Irrigation
    2. 10.2. Factors Affecting the Selection of Irrigation Method
    3. 10.3. Layout of Basin Irrigation
    4. 10.4. Layout for Furrow Irrigation
    5. 10.5. Layout of Border Irrigation
    6. 10.6. Concluding Remarks
  18. Chapter 11. Optimal Cropping Pattern
    1. 11.1. Linear Programming
    2. 11.2. LP Formulation for Optimal Crop Planning
    3. 11.3. LP-Based Conjunctive Use of Surface and Groundwater Resources
    4. 11.4. Concluding Remarks
  19. Chapter 12. Irrigation Scheduling
    1. 12.1. Simple Calculation of Irrigation Scheduling (FAO, 1989)
    2. 12.2. Water Balance Method
    3. 12.3. Warabandi Scheduling
    4. 12.4. Process of Warabandi
    5. 12.5. Concluding Remarks
  20. Chapter 13. Benchmarking of Irrigation Projects
    1. 13.1. Benchmarking Domains
    2. 13.2. Benchmarking Process
    3. 13.3. Data Required for Benchmarking
    4. 13.4. Indicators of Benchmarking
    5. 13.5. Computational Methods for Indicators
    6. 13.6. Concluding Remarks
  21. Chapter 14. Performance Evaluation of Irrigation Projects
    1. 14.1. System Delivery Performance
    2. 14.2. Productive Performance
    3. 14.3. Financial Performance
    4. 14.4. Concluding Remarks
  22. Chapter 15. Water Auditing of Irrigation Projects
    1. 15.1. Definition of Water Auditing
    2. 15.2. Data Collection for Water Auditing
    3. 15.3. Indicators of Water Audit
    4. 15.4. Brief Description of Indicators
    5. 15.5. Estimation of Water Auditing Indicators
    6. 15.6. Concluding Remarks
  23. Chapter 16. Flow Measurement in Canals
    1. 16.1. Flow Measuring Structures
    2. 16.2. Area–Velocity Method
    3. 16.3. Concluding Remarks
  24. Chapter 17. Soil Analysis
    1. 17.1. Soil and Its Physical Properties
    2. 17.2. Soil-Water Constants
    3. 17.3. Protocol for Soil Moisture Analysis Using Gravimetric Method
    4. 17.4. Measurement of Soil Moisture at Field
    5. 17.5. Concluding Remarks
  25. Chapter 18. Scheme Irrigation Efficiency
    1. 18.1. Scheme Irrigation Efficiency
    2. 18.2. Field Application Efficiency (Ea)
    3. 18.3. Conveyance Efficiency (Ec)
    4. 18.4. Concluding Remarks
  26. Chapter 19. Environmental Aspects of Irrigation Projects
    1. 19.1. Environment and Ecosystem Processes
    2. 19.2. Biodiversity
    3. 19.3. Environmental Aspects of Water Resources Development
    4. 19.4. Environmental Impact of Development of Irrigation Projects
    5. 19.5. Environmental Impact Assessment and Management
    6. 19.6. Policy Background
    7. 19.7. Clearances Required for River Valley or Irrigation Projects in India
    8. 19.8. Concluding Remarks
  27. Chapter 20. Financial Appraisal of Irrigation Projects
    1. 20.1. Benefits and Costs of the Project
    2. 20.2. Benefit–Cost Analysis
    3. 20.3. Appraisal of the Project
    4. 20.4. Concluding Remarks
  28. Chapter 21. Way Forward to Improve Irrigation Efficiency
    1. 21.1. Feasible Solution to Improve System Technical Efficiency
    2. 21.2. Feasible Solution to Improve Productive Efficiency
    3. 21.3. Feasible Solution to Improve Financial Efficiency
    4. 21.4. Feasible Solution to Improve Distribution Efficiency
    5. 21.5. Concluding Remarks
  29. Appendices
  30. Index