This new book offers an engineer's perspective on the history of water technology and its impact on the development of civilisation. A Second Edition and translation into English of the French book "L'Hydraulique dans les Civilisations Anciennes". Water professionals, engineers, scientists, and students will find this book fascinating and invaluable to their understanding of the fundamental role of water engineering in the development of civilization. The book abounds with descriptions of hydraulic techniques in the civilizations of the classical era and the Middle Ages, including illustrations and translated descriptions of ancient observers and authors. The work is unique in offering an engineer's perspective not only on the history of water technology, but also demonstration of the genesis of ideas and the transmissions of ideas and technology from one age and civilization to the next. The book is especially noteworthy for its efforts to situate hydraulic developments in their historical and intellectual context.