This section covers Evaporation, Transpiration, and Infiltration. Subramanya’s treatment of the Infiltration Capacity and indices like the $\phi$-index and $W$-index is precise. For students struggling to understand how to calculate effective rainfall from total rainfall, this chapter provides step-by-step methodologies that are easy to follow.
While the 3rd edition touched on traditional methods, the 4th edition includes a dedicated chapter on the application of Geographic Information Systems (GIS) and Remote Sensing in hydrology. This includes basics of DEM (Digital Elevation Models) for watershed delineation.
in 2013, this approximately 550-page volume is praised for its lucid style and focus on practical field applications relevant to tropical climates. National Digital Library of Ethiopia Core Content & Table of Contents
The 4th edition builds on the strengths of the 3rd edition by adding new content and updating existing chapters.
The 4th edition refreshes empirical constants used in:
