CECW-EH-Y Department of the Army EM 1110-2-1416U.S. Army Corps of EngineersEngineer Manual Washington DC 20314-1000 15 October -2-1416Engineering and DesignRIVER HYDRAULICSDistributionRestrictionStatementApproved for public release; distribution isunlimited.
RiverHydraulics
ENGINEER MANUAL
U.S.ArmyCorpsofEngineers DEPARTMENTOFTHEARMY Washington DC20314-1000
Engineering and Design RIVERHYDRAULICS
1. Purpose. This manual presents basic principles and technical procedures for analysis of open channel flows in natural river systems.
ratories and field operating activities having civil works responsibilities.
3. General. Procedures described herein are considered appropriate and usable for planning analysisand design of projects and features performed by the Corps of Engineers. Basic theory is presented aspresents results of previous numerical model applications to river hydraulics and corresponding field required to clarify appropriate application and selection of numerical models. This guidance alsoobservations.
FOR THE COMMANDER:
WILLIAM D. BROWN Colonel Corps of EngineersChief of Staff
No. 1110-2-1416 Manual
Purpose Scope 1-1 1-2 1-1 1-1Applicability References 1-3 1-4 1-1 1-1Needs for River Hydraulic Studies 1-5 1-1Organization General Methods 1-6 1-7 1-1 1-2
Chapter2
Introduction to River Hydraulics
Introduction 2-1 2-1Flow Dimensionality Considerations .. 2-2 2-3 2-1 2-2Flow Classification 2-4 2-4Regimes of Flow Types of Flow . 2-5 2-6 2-7 2-7Classification of Flow Profiles Basic Principles of River Hydraulics 2-8 2-7 2-9 2-9
Chapter 3
Formulating Hydraulic Studies
Initial Considerations 3-1 3-1Overview of Techniques for ConductingAnalysis of Hydraulic Components River Hydraulics Studies 3-3 3-2 3-4 3-1Data Requirements Calibration of Hydraulic Analysis 3-4 3-4Models 3-5 3-11Guidelines for Analytical Model Selection 3-6 3-13
U.S.Army Corps of Engineers DEPARTMENT OF THEARMY Washington DC 20314-1000
Engineering andDesign RIVERHYDRAULICS
Table of Contents
Chapter4
Multidimensional Flow Analysis
Limitations of One-Dimensional Introduction 4-1 4-1Analysis 4-3 4-2 4-1Equations of Flow Significance of Terms 4-4 4-2 4-1Two-Dimensional Flow Conditions Use of Equations of Flow 4-5 4-6 4-2 4-3Available Computer Programs Data Requirements 4-7 4-4Data Development and Model 4-8 4-5 Example Applications Calibration 4-10 4-9 4-6 4-7
Unsteady Flow Introduction 5-1 5-1
Section 1IntroductionConditions that Require Unsteady Steady Versus Unsteady Flow Models 5-2 5-1Geometry Flow Analysis . - 5-3 5-4 5-2 5-3Controls 5-5 5-5Steps to Follow in Modeling a Boundary Conditions 5-6 5-5 Accuracy of Observed Data River System 5-7 5-8 5-11 5-9Calibration and Verification 5-9 5-16Example Applications of Unsteady Flow Models 5-10 5-17
Section IITheory of Routing Models Introduction 5-11 5-17Difusion Model Unsteady Flow Model 5-12 5-13 5-23 5-28Kinematic Wave Model 5-14 5-29Accuracy of Approximate Hydraulic Models 5-15 5-29Muskingum-Cunge Model Hydrologic Routing Schemes 5-17 5-16 5-30 5-30
Chapter 6
Steady Flow-Water Surface Profiles
Section IIIMode! Development Data Sources 6-9 6-5Data and Profile Accuracy Model Calibration and Verification 11-9 6-10 9-9 6-7
Special ProblemsIntroduction to Special Problems Bridge Hydraulics 6-12 6-13 6-13 6-13Limits of Effective Flow Culvert Hydraulics 6-14 6-16Channel Controls 6-16 6-15 6-19 6-18River Confluences Changing Flow Regime 6-17 6-18 61-9 6-19Ice-covered Streams 61-9 6-23
Chapter7 Water Surface Profiles with Movable Boundaries
Section IIntroductionSimilarities and Differences Between Fixed and MobileBed Computations 7-1 7-1Section IISediment Transpont Functions . - Theoretical Basis 7-2 7-1Section IIData RequirementsGeneral Data Requirements Geometric Data 7-4 7-3 7-4 7-5Boundary Conditions Data Bed Sediment Data 7-5 7-7 7-7Data Sources 7-6 7-7 7-11Data and Profile Accuracy 7-8 7-14Section IVModel Confirmation and Utilization Model Performance 7-9 7-14Development of Base Test and Analysis of Alternatives . . 7-10 7-18Section VComputer ProgramsScour and Deposition in Rivers and Introduction 7-11 7-19Reservoirs (HEC-6) 7-12 7-19Open Channel Flow and Sedimentation (TABS-2) 7-13 7-20
Appendix A References
Appendix BGlossary
