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Primarily intended as a textbook for the undergraduate and postgraduate students of civil engineering, this book introduces the concepts of hydrology in a comprehensive manner. It covers all the aspects of hydrology in 15 chapters. The book starts with the hydrologic cycle which is the central concept of hydrology. Then it moves on to basics of hydrometeorology, abstraction losses like infiltration, runoff in different forms, instantaneous unit hydrograph (IUH) and its mathematical concepts like convolution integral, synthetic unit hydrograph (SUH) and S-hydrograph. Finally, the text concludes with estimation of flood by empirical equations and different flood frequency analysis, and hydrology of basin management which deals with soil conservation, water shed management and control of soil erosion that are very important for agricultural engineering. Key Feature Presents several numerical methods of solving unsteady hydraulic routing and ground water flow equations. Contains solved examples to reinforce the understanding of the theory. Includes references in each chapter. About the Author MADAN MOHAN DAS M.S. (Cornell University, USA), Ph.D. (University of Strathclyde, UK) has been Professor, Civil Engineering Department of Assam Engineering College, Guwahati. An Emeritus Fellow of AICTE and Director of Technical Education, Government of Assam and a Telford Premium, 1981 winner jointly with Late Emeritus Professor DIH Barr of University of Strathclyde for one of their research papers by the Council of Institute Civil Engineers (ICE), London, he has more than four decades of teaching experience and three decades of research experience. Dr. Das has authored 7 books (All published by PHI Learning). He has published/presented sixty research papers in national and international journals and conferences. His research interest includes hydrodynamics, free surface flow, irrigation, water power engineering and hydrology and other civil engineering subjects. MIMI DAS SAIKIA Ph.D. (IIT Guwahati), is an Associate Professor, Civil Engineering, Royal School of Engineering and Technology, Guwahati. She has been with the Department of Civil Engineering, National Institute of Technology, Silchar. With more than a decade of experience in teaching and research, she has published more than twenty papers in different national and international journals and conferences. Dr. Mimi Das Saikia has authored five books (all published by PHI Learning). Her research interest includes pipe friction, open channel flow and dam-break flood analysis. Table of Contents Preface 1. INTRODUCTION 2. HYDROMETEOROLOGY 3. PRECIPITATION 4. INFILTRATION 5. EVAPOTRANSPIRATION 6. RUNOFF 7. HYDROGRAPHS 8. METHODS OF DISCHARGE MEASUREMENT 9. ESTIMATION OF FLOOD 10. FLOOD DISASTER MANAGEMENT MEASURES AND DAMAGE ESTIMATION 11. RIVER ENGINEERING AND RIVER TRAINING WORKS 12. HYDROLOGIC ROUTING 13. HYDRAULIC ROUTING 14. GROUNDWATER HYDROLOGY 15. HYDROLOGY OF BASIN MANAGEMENT Appendix Index