Hydrology & Water Resources Engineering - Vol 2 | 29. Modelling Infiltration Capacity by Abraham | Learn Smarter
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29. Modelling Infiltration Capacity

Infiltration is a critical process impacting the hydrological cycle, influencing runoff, groundwater recharge, and soil moisture dynamics. Understanding and modeling infiltration capacity is vital for effective hydrologic design, flood forecasting, and watershed management. This chapter explores various factors affecting infiltration, different empirical and conceptual models for modeling infiltration processes, and the recent advances that enhance the accuracy of these models.

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Sections

  • 1

    Modelling Infiltration Capacity

    This section covers the definition, significance, factors affecting, and methods for modelling infiltration capacity.

    Learning Practice

  • 2

    Introduction

    This section introduces the concept of infiltration and its significance in the hydrological cycle.

    Learning Practice

  • 3

    29.1 Infiltration – Definition And Importance

    Infiltration is the process by which water enters the soil from the surface, playing a vital role in the hydrological cycle and influencing water management practices.

    Learning Practice

  • 4

    29.2 Factors Affecting Infiltration

    Learning

  • 5

    29.3 Infiltration Capacity And Rate

    Learning

  • 6

    29.4 Methods Of Measuring Infiltration

    Learning

  • 7

    29.5 Empirical Infiltration Models

    This section discusses empirical infiltration models, which are based on observed data and emphasize curve-fitting techniques over the explicit consideration of physical infiltration processes.

    Learning Practice

  • 7.1

    29.5.1 Horton’s Infiltration Model

    Learning

  • 7.2

    29.5.2 Philip’s Equation

    Learning

  • 7.3

    29.5.3 Green-Ampt Model

    The Green-Ampt model is a conceptual framework for understanding infiltration based on a sharp wetting front, assuming homogeneous soil and a distinct wetting front.

    Learning Practice

  • 8

    29.6 Conceptual And Physically Based Models

    This section explains conceptual and physically based models that incorporate fundamental physical laws of infiltration processes.

    Learning Practice

  • 8.1

    29.6.1 Richards’ Equation

    Learning

  • 8.2

    29.6.2 Numerical Techniques

    Learning

  • 9

    29.7 Model Parameter Estimation

    Learning

  • 10

    29.8 Infiltration Modelling In Watershed Hydrology

    Learning

  • 11

    29.9 Infiltration In Urban And Agricultural Settings

    Learning

  • 11.1

    Urban Areas

    Urban areas reduce infiltration capacity due to impervious surfaces, impacting hydrology and necessitating green infrastructure for effective water management.

    Learning Practice

  • 11.2

    Agricultural Areas

    This section discusses the influence of infiltration capacity on agricultural areas, emphasizing the importance of understanding soil behavior for effective irrigation and drainage management.

    Learning Practice

  • 12

    29.10 Recent Advances In Infiltration Modelling

    Learning

References

Chapter_29_Model.pdf

Class Notes

Memorization

What we have learnt

  • Infiltration is the movemen...
  • Factors such as soil proper...
  • Empirical models like Horto...

Final Test

Revision Tests