This postgraduate text and reference introduces readers to tides, tidal currents, storm-surges, and sea level trends in coastal regions. The book is based on tidal waters of Maryland, Virginia, Chesapeake Bay and the Atlantic regions and also provides international examples from the UK and locations around the world, allowing readers to compare tidal regimes and perform analysis from data in their own environment. It is an important book for teachers, researchers, planners, and engineers responsible for coastal defense as well as new infrastructure and waterway modification in ports and harbors. The wealth of detail makes this text helpful to readers who need a wider understanding of this increasingly important topic. MATLAB scientific programming language and simple-to-use graphical user interface (GUI) programs are introduced and are available at no cost from MATLAB Central file exchange (http://www mathworks.com/matlabcentral). GUI programs provide tools for analyzing water level or water current observations, deriving major tidal constituents, and showing how tide and tidal current predictions are made in addition to producing unrivalled color graphic visualizations. GUI is the author's tidal analysis and is particularly suited for investigation of storm surge in coastal waters. Professor Boon assembles information for public and private use from his capacity as advisor to state and federal authorities and corporations.