Open channel flow can be understood through just a few simple equations, graphs, and computational tools. Geared to a first course in open channel flow, this book outlines current theory with clear and fully solved examples. Offering practical computational tools, such as spreadsheet applications and the HEC-RAS program, it assumes a foundation in fluid mechanics and then adopts a deliberately logical sequence through energy, momentum, friction, and gradually varied flow. It comes with downloadable animations, and solutions to end-of-chapter problems are provided.