While Garg is excellent for foundational and exam preparation, you may want to supplement your reading. If you cannot find a legitimate copy of Garg’s PDF, these alternatives (also commonly available digitally) are superb:
Hundreds of step-by-step problems to master calculations. While Garg is excellent for foundational and exam
For students and professionals in civil engineering, Santosh Kumar Garg's Hydrology and Water Resources Engineering While Garg is excellent for foundational and exam
The text provides a deep dive into the hydrologic cycle and the engineering techniques used to harness water resources. Key areas covered include: Surface Water Hydrology While Garg is excellent for foundational and exam
: Measurement techniques and analysis of rainfall data.