Basic Hydrology

Preface1 Introduction to BASIC 1.1 Introduction 1.2 Flowcharts 1.3 Variables, Arrays and Strings 1.4 Input, Output and Format 1.5 Expressions, Functions and Subroutines 1.6 Control Statements 1.7 Files 1.8 Bibliography2 Elements of Hydrology 2.1 Bibliography3 Precipitation Essential Theory 3.1 Introduction 3.2 Supplementing and Checking Records 3.3 Variation of Depth with Area 3.4 Variation of Depth with Time 3.5 Analysis of Trends Worked Examples 3.1 DOUBLEMASS: Consistency of Records 3.2 FOURQUAD: Estimation of Missing Rainfall 3.3 INTENDUR: Depth-Intensity-Duration Analysis 3.4 DEPAREA: Depth-Area Analysis 3.5 MOVMEAN: Moving Mean Analysis Problems4 Evaporation Essential Theory 4.1 Introduction 4.2 Measurement of Evaporation 4.3 Estimation of Evaporation 4.4 Evapo-transpiration Worked Examples 4.1 EVAPOR: Estimation of Evaporation 4.2 CONSUM: Determination of Consumptive Use 4.3 HUMID: Determination of Humidity Problems5 Frequency Essential Theory 5.1 Introduction 5.2 Recurrence Interval 5.3 Probability and Risk 5.4 Intensity Duration Frequency Worked Examples 5.1 FREQUENCY: Analysis of Point Frequency 5.2 FREQ: Practical Analysis of Point Frequency 5.3 RISK: Analysis of Risk Problems6 Stream Flow and Surface Runoff Essential Theory 6.1 Factors Affecting Runoff 6.2 The Hydrograph 6.3 Flow Measurement by Weirs 6.4 Empirical Equations for Prediction of Runoff 6.5 The Rational Method Worked Examples 6.1 WEIRDIS: Discharge over Weirs 6.2 STAGEDIS: Calculation of Discharge from Velocity Measurements 6.3 EFFRAIN: Calculation of Effective Rainfall from Hydrograph 6.4 SRUN: Calculation of Surface Runoff Problems7 The Unit Hydrograph Essential Theory 7.1 Introduction 7.2 Derivation of Unit Graph 7.3 Changing the Duration to a Multiple of the Original 7.4 Conversion to Durations which are Non-integer Multiples or Fractions of the Original Duration 7.5 Application of Unit Graph Worked Examples 7.1 UGRAPH: Derivation of Unit Hydrograph 7.2 SCURVE: Development of an 'S' Curve 7.3 MODUR: Modification of the Duration Using an 'S' Curve 7.4 SYNHYD: Development of Surface Runoff Hydrograph from Unit Hydrograph and Composite Storm Problems8 Reservoir Design Essential Theory 8.1 Introduction 8.2 Storage Calculations 8.3 Flood Routing Worked Examples 8.1 CAPACITY: Estimation of Required Storage Volume 8.2 ROUTING: Flood Routing through Reservoirs ProblemsIndex