Roger E. Smith and Keith R. J. Smettem are the authors of Infiltration Theory for Hydrologic Applications, published by Wiley.

• Preface  vii1. Introduction  1Brief History  1Runoff Mechanisms  3Engineering and Scientific Approaches to Hydrology  4Objective and Scope of this Work  52. Basic Porous Media Hydraulics  7Capillary Properties of Soil Water  7Porous Media  9Darcy's Law  12Hydraulic Characteristics of Porous Media  13Steady Flow Soil Water Relations  14Functional Representation of Hydraulic Characteristics 183. Some Essentials of One-Dimensional Porous Media Dynamics  25Introduction  25Absorption: Gravity-Free Intake  27Infiltration: Vertical Flow  31Mathematical Approximations for Soil Water Flow  34Approximations for Soil Hydraulic Characteristics 364. A Realistic Integrable Nonlinear Model for Transient Unsaturated Flow 41Introduction  41Integrable Forms of Richards' Equation' 43Solution of Nonlinear Diffusion Equation  46Required Forms for Soil Characteristics 49Solution of the Integrable Form  55Discussion and Summary 605. Absorption and Infiltration Relations and the Infiltrability-DepthApproximation 63Introduction  63Absorption 65Infiltration  73Stability of Flux-ConcentrationR elation  856. Infiltrability Models: Comparisons and Application  97Introduction  97Timing of Pending 98Time Explicit Approximations 108Applying the Infiltrability Models to Variable Rainfall Patterns 1147. Applying Infiltration Models in Layered Soils and Redistribution Cases 119Introduction  119Redistribution and Reinfiltration  119Layered Soils  1228. Field Measurements of Infiltration Parameters  135Introduction  135Drip Infiltrometers 136Ring Infiltrometers  138Permeameters  1419. Infiltration and Runoff on a Hillslope  159Introduction  159General Surface Flow and Infiltration Interaction  160Effect of Surface Relief on Surface Water Losses  162Infiltration Heterogeneity and Runoff  164Appendices 185I. Derivation of the Infiltration Integral from Richards' Equation  185II. Attenuation of Characteristic Kinematic Shock in Soil Water Flow 187III. Finite Difference Solution Method for Richards' Equation  190List of Symbols and Abbreviations 199References  203Index  211