The author, during his long experience in teaching and consultancy of field problems, realized the problems being faced by the students and field engineers engaged in planning and design of small hydro projects and developed this book. The book is divided into two parts. First part deals with the subjects of planning including the layout of the project and the associated structural components. The second part deals with the design aspects of the structures of the project including the gates and valves. This is a unique and concise book covering all the theoretical and practical aspects of a small hydro project. The book is useful for both students and field engineers.