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1.3.2 Regulation and Storage Influences 1.3.3 Requirements of Different Protected Objects 1.3.4 Different Drainage Methods 1.4 Waterlogging Drainage Modulus and Its Influencing Factors 1.4.1 Modulus of Waterlogging Drainage 1.4.2 Modulus Influencing Factors 1.5 Task Questions Bibliography 2 Introduction to Waterlogging Hydrological Calculation Methods in China and Other Countries 2.1 Waterlogging Hydrological Calculation Methods Applied in China 2.1.1 Main Methods Applied in China 2.1.2 Problems in Waterlogging Hydrological Calculations 2.2 Main Waterlogging Hydrological Calculation Methods Applied in Other Countries 2.2.1 Conventional Methods 2.2.2 Modelling Methods Questions Bibliography 3 Conventional Waterlogging Hydrologic Calculations for Rural Areas 3.1 Design Storm 3.1.1 Design Storm Duration 3.1.2 Design Storm Calculation 3.2 Runoff Generation 3.2.1 Rainfall-Runoff Relation Method 3.2.2 Loss Reduction Method 3.2.3 Runoff Coefficient Method 3.3 Waterlogging Drainage Discharge Calculation 3.3.1 Empirical Equation Method with Waterlogging Drainage Modulus 3.3.2 Average Exclusion Method 3.3.3 Unit Hydrograph Method 3.3.4 Total Inflow Channel Storage Routing Method 3.3.5 Water Volume Balance Method 3.4 Analysis of Different Methods’Influence on Waterlogging Drainage Modulus 3.4.1 Analysis of Different Methods’Influenceon Gravity Drainage Modulus 3.4.2 Analysis of Different Pumping Parameters’Influence on Waterlogging Drainage Modulus 3.5 Calculation of Waterlogging Drainage Discharge in Hilly Plain Areas 3.5.1 Comprehensive Unit Hydrograph Method for Hilly Plain Areas 3.5.2 Zoned Runoff Generation and Concentration Method 3.5.3 Average Exclusion Method for Hilly Plain Areas 3.6 Calculation of Design Discharge in Flood Intercepting Channel Questions Bibliography 4 Modelling Method for Calculating Drainage Discharge 4.1 Hydraulic Model for Water Network Areas 4.1.1 Basic Form of 1-D Hydraulic Model 4.1.2 Equation Set Solving Method 4.1.3 Examples 4.2 Hydrologic Model for Plain Area 4.2.1 Model Structure 4.2.2 Model Calculation 4.2.3 Model Calibration and Checking 4.2.4 Analysis of Modelling Parameters for Different Types of Zones 4.2.5 Model Application Questions Bibliography 5 Hydrologic Calculations for Waterlogging Control in Urban Areas 5.1 Calculation for Ordinary Urban Areas 5.1.1 Urban Waterlogging Calculation Characteristics 5.1.2 Residential Area Sewer System Discharge Calculation 5.1.3 Urban Drainage Channel Design Discharge Calculation 5.1.4 Relationship Between Residential Area Sewer System Discharge and Urban Drainage Channel Design Discharge 5.2 Calculation for Sponge City Areas 5.2.1 Concept of Sponge City 5.2.2 Low Impact Development Measures for Urban Areas 5.2.3 Drainage Discharge Calculation for Sponge City Area Questions Bibliography 6 Design Water Stage and Tide Stage for Waterlogging Drainage in Drainage Receiving Areas 6.1 Waterlogging Drainage Stage for Inland River or Lake 6.1.1 Initial Stage in Riveror Lake for Gravity Drainage 6.1.2 Design Stage in Drainage Receiving River for Pumping Drainage 6.2 Waterlogging Drainage Tide Types and Tide Stage in Coastal Swale or Tidal River Reach 6.2.1 Tide and Its Relationship with Waterlogging Drainage 6.2.2 Calculation of Design Tide Stage and Waterlogging Drainage Tide Types Questions Bibliography