This edition has been fine-tuned to include the latest developments in the field of engineering Hydrology and exclude obsolete practices. New content has been added in various chapters to also make the subject matter in sync with the AICTE model curriculum and majority of technical educational institutions across the country. The book is also enriched with improved pedagogy. Highlights: 1. Up-to-date coverage including a brief description of the currently popular 2. Electronic velocity measuring instrument, acoustic Doppler current profiler (adcp) 3. New sections on scs-cn method of calculating flood hydrograph and estimating run-offs, and hard rock aquifers of India 4. Includes extensive list of artificial recharge techniques in practice today 5. Exhaustive pedagogy: a. 100+ Solved examples; B. 100+ review questions; C. 200+ GATE based objective questions; br>D 200+ Numerical problems; C. 50+ additional MCQs as Appendix; br>D review and objective questions marked with level of difficulty.