This book, although intended for a wide range of users, is primarily written as course material on flood control and drainage engineering for students of civil engineering with specializations in water resources, hydraulic and environmental engineering, at the final year undergraduate level and post-graduate level. This third edition of the book is thoroughly revised to accommodate recent developments in the area of remote sensing, information technology and GIS technology to deal with problems of flood forecasting, flood plain prioritization and flood hazard zoning. Apart from the above, new additions have been made to deal with design of engineering measures for flood control, drainage improvement, especially with regard to salinity and coastal aquifer management from the ingress of sea water. Design of engineering measures for floods requires knowledge of hydrology to estimate design flood and to apply flood routing techniques, reservoir planning, design and operation, theoretical background of river engineering, tidal hydraulics, drainage and reclamation engineering along with application of remote sending and GIS technology for the design of channel improvement works. The book consists of thirteen chapters, including design problem-solving and case studies to make the book practical and applications oriented and therefore useful to the student community also. The subject of flood control and drainage engineering is of considerable interest to civil engineers, agricultural engineers, architects and town planners, civil authorities, planning commissions and other government/private organizations, non-government organizations, responsible for design of flood protection structures/mitigation measures for disaster management.