Enriched with a detailed global perspective on traditional hydraulics and its significance as a vanishing folk heritage, this work is an indepth and well-researched study of the wide diversity of traditional hydraulic structures, including their technology, in the specific context of the Uttarakhand state of India, located in the Central Himalayan region. Introducing the reader to the geo-ethnic mosaic of Uttarakhand for a better understanding of its tradition of water management, the book takes through a journey of diverse traditional water collection and distribution systems across the State, their structures and technology, and their use for purposes such as drinking, irrigation and power generation—vividly illustrated through numerous colour photographs. Based on author's intensive and extensive field surveys involving interaction with the village and tribal folk, the book closes with a strong argument that highlights the relevance of this folk scientific heritage to meet the prevailing global water crisis.