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Statistical Analysis of Hydrologic Variables - Methods and Applications, 2019
- Contents
- Preface
- CHAPTER 1 [Go to Page]
- Chapter 1: Introduction [Go to Page]
- References
- CHAPTER 2 [Go to Page]
- Chapter 2: Statistical Analysis of Precipitation Extremes [Go to Page]
- 2.0 Introduction
- 2.1 Ground-, Radar-, and Satellite-based Measurements [Go to Page]
- 2.1.1 Systematic and Random Errors
- 2.1.2 Precipitation Measurements and Networks
- 2.1.3 Radar-Based Rainfall Estimates
- 2.1.4 Satellite-Based Precipitation Estimation
- 2.2 Fitting of Probability Distributions for Rainfall Extremes
- 2.3 Precipitation Frequency Analysis: Development of Cumulative Distribution Functions
- 2.4 Probability Distributions for Characterizing Precipitation Data [Go to Page]
- 2.4.1. Normal Distribution
- 2.4.2. Log-Normal Distribution
- 2.4.3 Three-Parameter Log-Normal Distribution
- 2.4.4 Extreme Value Type I Distribution
- 2.4.5 Extreme Value Type III Distribution
- 2.4.6 Generalized Extreme Value Distribution
- 2.4.7 Gamma Type III Distribution
- 2.4.8 Exponential Distribution
- 2.4.9 Other Distributions
- 2.5 Estimation of Distribution Parameters [Go to Page]
- 2.5.1 Method of Moments
- 2.5.2 Maximum Likelihood Estimation Method
- 2.5.3 L-Moments Approach
- 2.6 Frequency Factors
- 2.7 Goodness-of-Fit Tests for Normal Distributions
- 2.8 Goodness-of-Fit Tests for Other Distributions [Go to Page]
- 2.8.1 Quantitative Measures
- 2.8.2 L-Moment Diagrams
- 2.9 Regional Frequency Analysis
- 2.10 Illustrative Examples [Go to Page]
- Example 2-1: Daily Precipitation Time Series
- Example 2-2: Annual Extremes for Different Durations
- 2.11 Fitting of a Parametric Frequency Curve for Rainfall Extremes
- 2.12 Extreme Rainfall Frequency Analysis in the United States
- 2.13 Probable Maximum Precipitation
- 2.14 Rainfall Frequency Analysis: Uncertainty and Variability Issues [Go to Page]
- 2.14.1 Sample Adjustment Factors
- 2.14.2 Length of Historical Data
- 2.14.3 Missing Data and Rainfall Statistics Preservation
- 2.14.4 Missing Rainfall Records: Estimation Methods
- 2.14.5 Statistical Corrections of Spatially Interpolated Missing Precipitation Data Estimates
- 2.15 Stationarity Issues [Go to Page]
- 2.15.1 Trend Analysis
- 2.15.2 Spearman's Rank Correlation Coefficient (ρ) Test
- 2.15.3 Mann-Kendall Test
- 2.15.4 Application of Spearman's Rho and Mann-Kendall Tests
- 2.15.5 Parametric Trend Analysis: Regression
- 2.16 Homogeneity
- 2.17 Detection of Changes in Moments
- 2.18 Nonparametric Methods [Go to Page]
- 2.18.1 Kernel Density Estimation
- 2.18.2 Characterization of Extreme Precipitation Events
- 2.19 Nonparametric Test for Independence [Go to Page]
- 2.19.1 Runs Test
- 2.19.2 Ranked von Neumann Test
- 2.20 Partial Duration Series
- 2.21 Statistical Characterization of Interevent Time Definition of Storm Events
- 2.22 Incorporation of Climate Variability Cycles and Climate Change into Rainfall Frequency Analysis
- 2.23 Use of Future Data Sources for Frequency Analysis
- 2.24 Descriptive Indexes for Precipitation Extremes
- 2.25 Standard Precipitation Index
- 2.26 Trends Based on GCM Model Simulations
- 2.27 Hydrologic Design for the Future
- 2.28 Summary and Conclusions
- References
- Appendix: Cumulative Probility Plots of Precipitation Data Using Different Plotting Position Formulae
- CHAPTER 3 [Go to Page]
- Chapter 3: Evapotranspiration and Evaporative Demand [Go to Page]
- 3.0 INTRODUCTION [Go to Page]
- 3.0.1 Motivation
- 3.0.2 Chapter Contents
- 3.1 Evapotranspiration and Evaporative Demand: A Physical Primer [Go to Page]
- 3.1.1 Physical Measures of ET and E0
- 3.1.2 Drivers or Limits to ET: Introducing E0
- 3.2 Models and Observations of ET and E0 [Go to Page]
- 3.2.1 Penman's Legacy: Physical Models of E0
- 3.2.2 Energy and Water Limits to ET: The Budyko Framework
- 3.2.3 Complementarity of Regional ET and E0
- 3.2.4 Water-balance Estimates of ET
- 3.2.5 Eddy Covariance Estimates of ET and Global Observation Efforts
- 3.2.6 Remote Sensing and Energy Balance Modeling of ET
- 3.2.7 T-Based E0 Formulations: A Warning
- 3.2.8 Observed E0
- 3.3 The Reference Evapotranspiration Concept [Go to Page]
- 3.3.1 Penman-Monteith Approach to ET
- 3.3.2 The ASCE Standardized Reference ET Equation
- 3.3.3 Derivation of ETc from Reference ET
- 3.3.4 Sources of Uncertainty in ETc Estimation
- 3.3.5 Observed Sensitivity Analysis of ETrc
- 3.3.6 Method of Moments Variability Analysis of ETrc
- 3.4 Trends in ET and E0 [Go to Page]
- 3.4.1 Trend Analysis Techniques
- 3.4.2 Trends in ET and E0 and the Evaporation Paradox
- 3.5 Summary
- Acknowledgments
- References
- CHAPTER 4 [Go to Page]
- Chapter 4: Infiltration and Soil Water [Go to Page]
- 4.0 Scope and Introduction [Go to Page]
- 4.0.1 Central Role of Infiltration in Hydrology
- 4.0.2 Process Interactions Affecting Infiltration and Soil Water
- 4.0.3 Variability and Uncertainty of Infiltration and Soil Water
- 4.1 Infiltration and Soil-Water Dynamics: Description and Measurement [Go to Page]
- 4.1.1 History: Engineering Treatment of Rainfall Infiltration and Losses
- 4.1.2 Plant Canopy Interception of Rainfall
- 4.1.3 Local Processes of Soil Water and Infiltration
- 4.1.4 Infiltration Dynamics
- 4.1.5 Soil-Surface Sealing
- 4.1.6 Methods of Measuring Soil Water Content
- 4.1.7 Surface Flux Measurements
- 4.2 Spatial and Temporal Variability of Soil Water and Infiltration [Go to Page]
- 4.2.1 Vertical Soil Heterogeneity Effects on Infiltration
- 4.2.2 Observations of Space-Time Variability
- 4.2.3 Temporal Variability of Soil Hydraulic Properties
- 4.3 Scaling and Estimation of Soil Hydraulic Properties and Infiltration [Go to Page]
- 4.3.1 Pedotransfer Functions
- 4.3.2 Dimensionless Relationships in Infiltration Processes
- 4.3.3 Geostatistical Scaling Methods and Examples
- 4.3.4 Effective Parameters of Heterogeneous Soil
- 4.4 Uncertainty in Measurement and Space-Time Estimation [Go to Page]
- 4.4.1 Local Measurement Uncertainty
- 4.4.2 Inverse Methods and Parameter Estimation
- 4.4.3 Model Process Uncertainty and Preferential Flow
- 4.4.4 Statistical Inference
- 4.5 Links between Infiltration and Runoff at Different Scales [Go to Page]
- 4.5.1 Runoff, Run-On, and Process Interactions
- 4.5.2 Recent Advances in Simulating Space-Time Infiltration and Soil Water
- 4.6 Suggestions for Advancing Infiltration Science and Practice [Go to Page]
- 4.6.1 Advances in Measurement across Scales
- 4.6.2 Systems Approaches for Simulating Process Interactions
- 4.6.3 Computer Decision Aids and Risk Assessments
- List of Terms [Go to Page]
- Acronyms
- Symbols
- Acknowledgments and Caveat
- References
- CHAPTER 5 [Go to Page]
- Chapter 5: Probability Distributions in Groundwater Hydrology [Go to Page]
- 5.0 General
- 5.1 Definitions [Go to Page]
- 5.1.1 Probability Density Function
- 5.1.2 Correlation Coefficient
- 5.1.3 Spatial Correlation
- 5.1.4 Correlation Scale
- 5.1.5 Statistical Homogeneity and Independence
- 5.2 Basic Notation and Key Statistics [Go to Page]
- 5.2.1 The Sample Average
- 5.2.2 The Geometric Mean
- 5.2.3 The Standard Deviation and Variance
- 5.2.4 The Coefficient of Skew
- 5.3 Frequently Used pdfs in Groundwater Hydrology [Go to Page]
- 5.3.1 The Log-Normal pdf
- 5.3.2 The Gamma pdf and Its Special Case the Exponential pdf
- 5.3.3 The Log-Gamma pdf
- 5.4 Illustrative Examples [Go to Page]
- 5.4.1 Application of the Log-Normal pdf to Hydraulic Conductivity Data
- 5.4.2 Application of the Log-Gamma pdf to Fit Hydraulic Conductivity Data
- 5.4.3 Application of the Exponential Function to Hydraulic Conductivity Data
- 5.4.4 Application of the Gamma pdf to Residence Time and Age of Groundwater
- 5.4.5 Application of the Gamma pdf to Model Water Quality of Springs: Correlated Gamma Variables
- 5.5 Conclusions
- References
- CHAPTER 6 [Go to Page]
- Chapter 6: Modeling Streamflow Variability [Go to Page]
- 6.0 Introduction
- 6.1 Stochastic Features of Streamflow Time Series [Go to Page]
- 6.1.1 Autocorrelation
- 6.1.2 Seasonality
- 6.1.3 Storage-Related Statistics and Hurst Effect
- Example 6-1: Analysis of Variability Features of Poudre River Streamflows
- 6.2 Modeling of Streamflow Time Series [Go to Page]
- 6.2.1 ARMA Models
- 6.2.2 Modeling of Seasonal Series
- 6.2.3 Product Models for Intermittent Flows
- 6.2.4 Modeling of Long-Term Variability
- 6.2.5 Modeling of Streamflows by Nonparametric Methods
- 6.3 Modeling of Complex River Systems [Go to Page]
- 6.3.1 Modeling of Multivariate Time Series
- 6.3.2 Disaggregation Models
- 6.3.3 Modeling Strategies for Complex River Systems
- Example 6-2: Disaggregation Strategy for Modeling Upper Colorado River System
- 6.4 Software Tools
- 6.5 Further Remarks
- References
- CHAPTER 7 [Go to Page]
- Chapter 7: Flood Frequency Analysis in the United States [Go to Page]
- 7.0 General
- 7.1 Evolution of Bulletin 17B
- 7.2 Characteristics of the LP3 Distribution [Go to Page]
- 7.2.1 Log Space Characteristics
- 7.2.2 Real Space Characteristics
- 7.2.3 LP3 Model for Annual Flood Series
- 7.2.4 L-Moments
- 7.3 Estimation Procedures for Complete Samples [Go to Page]
- 7.3.1 Log Space Method of Moments
- 7.3.2 Log Space Method of Moments with Regional Skew
- Example 7.1
- 7.4 Estimation Procedures with Historical Information and Low Outliers [Go to Page]
- 7.4.1 Low Outliers
- 7.4.2 Historical Flood Information
- 7.4.3 Expected Moments Algorithm
- Example 7-2
- 7.4.5 What's Next: Bulletin 17C
- 7.5 Incorporation of Climate Change and Climate Variability into Flood Frequency Analysis [Go to Page]
- 7.5.1 Block Adjustment versus Parametric Adjustment
- 7.5.2 Incorporation of ENSO Effects Using Parametric Relationships
- Example 7-3
- 7.6 Closing Remarks
- Appendix 7A: Plotting Positions for Use with Low Outliers and Historical Information
- Appendix 7B: Expected Moments Algorithm
- References
- CHAPTER 8 [Go to Page]
- Chapter 8: Low Flows and Droughts [Go to Page]
- 8.0 Introduction
- 8.1 Low Flow and Drought Definitions [Go to Page]
- 8.1.1 Definitions of Low Flows
- 8.1.2 Definition of Drought
- 8.2 Empirical Frequency Analysis of Low Flows
- 8.3 Probability Distribution of Low Flows [Go to Page]
- 8.3.1 Fitting of Univariate Distributions
- 8.3.2 Case of Intermittent Flows
- 8.4 Regional Analysis of Low Flows [Go to Page]
- 8.4.1 Methods for Selecting Homogeneous Regions
- 8.4.2 Methods for Regional Analysis and Estimation
- 8.5 Analysis of Autocorrelated Low Flows [Go to Page]
- 8.5.1 Modeling of Autocorrelated Low Flows
- 8.5.2 Return Period and Risk of Low Flows
- 8.6 Statistical Characterization of Multiyear Droughts [Go to Page]
- 8.6.1 Probability Distributions and Moments of Drought Characteristics
- 8.6.2 Return Period of Multiyear Droughts
- 8.7 Regional Analysis of Droughts
- 8.8 Effects of Hydraulic Structures on Low Flows
- 8.9 Closing Remarks
- References
- CHAPTER 9 [Go to Page]
- Chapter 9: Probabilistic Models for Urban Stormwater Management [Go to Page]
- List of Symbols
- 9.0 General
- 9.1 Analytical Probabilistic Stormwater Models [Go to Page]
- 9.1.1 Overview
- 9.1.2 Rainfall Characterization
- 9.1.3 Event-Based Rainfall-Runoff Transformation
- 9.1.4 Derived Probability Distributions of Runoff Characteristics
- 9.1.5 Example 9-1: Flood Quantile Estimation and Flood Control Detention Pond Design in Chicago, Illinois
- 9.2 Performance Modeling for BMP Pollutant Removal with Uncertainty Analysis [Go to Page]
- 9.2.1 Overview
- 9.2.2 BMP Performance Modeling
- 9.2.3 Methods for Uncertainty Analysis
- 9.2.4 Sensitivity Results
- 9.2.5 Example 9-2: Uncertainty Analysis of BMP Performance for TSS Removal in Los Angeles, California
- 9.3 Summary
- Acknowledgments
- References
- CHAPTER 10 [Go to Page]
- Chapter 10: Analysis of Water Quality Random Variables [Go to Page]
- Glossary
- 10.0 General
- 10.1 Special Characteristics of Water Quality Random Variables
- 10.2 Practical Applications of Water Quality Distributions
- 10.3 The Normal Distribution
- 10.4 Tests for Normality and Transformations
- 10.5 The Log-Normal Distribution
- 10.6 Other Continuous Distributions: Gamma, Weibull, and Beta
- 10.7 The Binomial and Hypergeometric Distributions
- 10.8 Other Discrete Distributions and Microbiological Variables [Go to Page]
- 10.8.1 The Poisson Distribution
- 10.8.2 The Negative Binomial Distribution
- 10.8.3 The Multinomial Distribution
- 10.9 Nonparametric Representations [Go to Page]
- 10.9.1 Nonparametric Estimation of Quantiles and Proportions
- 10.9.2 Box-and-Whisker Plots
- 10.10 Censored Observations [Go to Page]
- 10.10.1 Empirical Distribution Functions and Summary Statistics for ROS and KM
- 10.10.2 Quantiles and Boxplots Using Censored Data
- 10.10.3 Avoidance of Censoring by Using All Measurements
- 10.11 Water Quality Populations of Interest Defined
- 10.12 Probability Sampling
- 10.13 Time Series and Stochastic Processes
- 10.14 Importance of Serial Correlation [Go to Page]
- 10.14.1 Serial Correlation and Probability Sampling
- 10.14.2 Serial Correlation and Stochastic Processes
- 10.14.3 Trend and Serial Correlation
- 10.14.4 Automated Sampling, Nearly Continuous Monitoring
- 10.15 Seasonality and Flow Effects
- 10.16 Multivariate Characterization
- 10.17 Summary
- References
- CHAPTER 11 [Go to Page]
- Chapter 11: Multivariate Frequency Distributions in Hydrology [Go to Page]
- 11.0 General
- 11.1 Multivariate Distributions in Hydrology [Go to Page]
- 11.1.1 Hydrometeorological Applications
- 11.1.2 Hydrological Applications
- 11.2 Conventional Multivariate Distributions Used in Hydrology [Go to Page]
- 11.2.1 Bivariate Normal Distribution
- 11.2.2 Bivariate Log-Normal Distribution
- 11.2.3 Bivariate Exponential Distribution
- 11.2.4 Bivariate Largest Extreme Value or Gumbel Distribution
- 11.3 Copula Method and Its Use in Hydrology [Go to Page]
- 11.3.1 Copula Concept
- 11.3.2 Copula Classes
- 11.3.3 Dependence through Copulas
- 11.3.4 Parameter Estimation Methods
- 11.3.5 Copula-Based Random Generation
- 11.3.6 Copula Selection Process
- 11.4 Illustrative Examples [Go to Page]
- 11.4.1 Example 11-1: Peak Flow and Volume
- 11.4.2 Example 11-2: Storm Duration and Depth
- 11.4.3 Example 11-3: Regional Flood Risk Management
- References
- CHAPTER 12 [Go to Page]
- Chapter 12: Hydrologic Record Events [Go to Page]
- Glossary
- 12.0 General
- 12.1 Parametric Properties of Hydrologic Records [Go to Page]
- 12.1.1 The Probability Distribution, Quantile Function, and Moments of Record Floods
- 12.1.2 The Gumbel Distribution
- 12.1.3 The Generalized Extreme Value Distribution
- 12.1.4 The Exponential Distribution
- 12.1.5 Generalized Pareto Distribution
- 12.2 Nonparametric Statistical Properties of Hydrologic Records [Go to Page]
- 12.2.1 The Recurrence or Waiting Time of Record Floods
- 12.2.2 The Probability Distribution of the Number of Record Events
- 12.2.3 Moments of the Number of Record-Breaking Events
- 12.2.4 Multivariate Record Events
- 12.3 Flood Envelope Curves: Application of the Theory of Records [Go to Page]
- 12.3.1 Envelope Curves: Historical Background
- 12.3.2 Probabilistic Interpretation of Envelope Curves
- 12.3.3 Exceedance Probability of Empirical Envelope Curves
- 12.4 Applications of the Theory of Records: Case Studies [Go to Page]
- 12.4.1 Application of Probabilistic Regional Envelope Curves
- 12.4.2 Record-Breaking Properties of Floods in the United States
- 12.5 Conclusions
- References
- Index [Go to Page]