Based on the author’s extensive expertise and experience, this book describes the principal aspects of the design, manufacture, installation, and operation of hydraulic gates. It includes in-depth analyses of topics such as the selection of gate types, the limits of their use, estimating their weight, operative forces, hoisting systems, design of structure and support elements, seals, and hydrostatic and hydrodynamic forces. It also discusses recent technological advances, such as inflatable gates and fusegates. A number of worked examples, drawings, and 300 photographs supplement the text and demonstrate a variety of applications.