This book contains a total of 105 papers, divided into 10 parts: hydraulic design and selection, stable operation, structural design and manufacturing, cavitation and wear, experimental research, installation and operation, condition maintenance, hydropower station transformation, electrical and auxiliary machinery, and others. This book brings together the research and practical results of the majority of hydropower engineering technicians in recent years. The content covers new ideas, new theories, new perspectives and advanced technologies in the development of hydropower and hydraulic machinery technology, technical problems existing in design, manufacturing, operation and management, summary and analysis of lessons learned from hydropower station accidents, selection and design of new or renovated power stations and pumping stations, and development strategies for the hydropower industry, etc. This book can be read by scholars, experts and engineering and technical personnel in colleges and universities, scientific research and design, manufacturing, installation, operation and management departments.