"This practical and comprehensive textbook covers all aspects of unconstrained water channels such as rivers, wetlands, and canals that have a surface interacting with the atmosphere. The basic principles of fluid mechanics are discussed, and readers later encounter concepts of sediment transport and hydraulic modelling. The concluding chapter introduces the design of hydraulic structures." - Environmental Science and Technology "One special feature of this book is that the author provides numerous worked examples, review questions, and interesting historical notes, as well as a number of ideas that are useful to students and might also spark their interest in the subject. Towards the end of the book is a interesting presentation of several historically important projects. Reading through the book, one cannot miss the tremendous enthusiasm the author has for hydraulic engineering. This book will be useful for undergraduate students and I would recommend it to them. I also think that graduate students and practical engineers will benefit by studying this book.

" --Canadian Journal of Civil Engineering.