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FOREWORU CHAPTER 1 Section 1.01 Section 1.02 CHAPTER 2 Section 2.01 Section 2.02 CHAPTER 3 Section 3.01 Section 3.02 Section 3.U3 Section 3.U4 Section 3.0!l CHAPTER 4 Section 4.01 Section 4.02 Section 4.03 Section 4.04 Section 4.U5 Section 4.06 Section 4.07 Section 4.08 Section 4.U~ Section 4.10 CHAPTER 5 Section !i.01 Section !l.02 Section 5.03 Section 5.U4 Section 5.U5 Section b.Uti Section b.07 Section 5.08 CONTENTS INTRODUCTION Purpose and Scope The Influence of the Electronic Computer EQUATIONS FOR STEADY GRADUALLY VARIED FLOW The One-Dimensional Energy Equation Necessary Independent Conditions and Equations CLASSIFICATION OF OPEN CHANNEL FLOW Modes of Conveyance State of Flow Types of Flow Classification of Steady Flow Profiles Significance of Flow Type in Computerized Techniques IJASIC DATA The Geometric Model Flow Boundary Geometry at Bridges Hydraulic Roughness Values Bridge Loss Coefficients Weir Coefficients Contraction and Expansion Coefficients Rating Curves Obtaining Field Data Minimum Uata Requirements Preparing Field Data for Use APPLICATION OF THE ONE-DIMENSIONAL ENERGY EQUATION TO NATURAL RIVERS Introduction Averages from Distributed Parameters Discharge and Starting Water Surface Elevation Geon~tric Properties and Conveyance The Velocity Distribution Factor Energy Loss Equations Friction Loss Relationship Between Manning's n, Chezy's C, and Darcy's f .u Page ,(. 1.01 1.01 1.03 2.01 2.01 2.06 3.01 3.01 3.02 3.06 3.08 3.11 4.01 4.01 4.04 4.07 4.10 4.10 4.15 4.15 4.16 4.18 4.18 5.01 5.01 5.02 5.06 5.07 5.12 5.13 5.14 5.20