Now in the third edition, this text on open-channel flow presents introductory material on the topic as well as up-to-date information for the planning, design, and operation of water-resource projects. It has a very strong emphasis on the application of efficient solution techniques, computational procedures, and modern methods of analysis and provides detailed coverage of steady and unsteady flows. The new edition includes a new chapter on the modeling of levee breach, new sections on hydraulic models and velocity measurements, new and updated references and problem sets and exercises, and a solutions manual. The material has been class tested over many years and the book is an ideal textbook for students in senior-level undergraduate and graduate courses on open-channel flow and hydraulic engineering, and as a reference for civil engineers needing up-to-date information on the latest developments in open-channel flow.