The production of electricity using the power of hydro and thermal energies presents a sustainable and renewable energy production technology. Hydropower is a mature technology, used in over 160 countries globally, where the kinetic energy of falling water is converted to electricity in hydropower plants. This book, divided into eight chapters, provides the reader with information on fundamental concepts and terminologies of the hydropower technologies. Each chapter can be read as stand-alone comprehensive content to gain knowledge on a particular area of relevance or interest. Readers are presented with a concise compilation of the best current knowledge on the types, mechanics and sustainability in the planning, management, and operations of hydropower technologies.