Water harvesting isconsidered as an important aspect of agriculture. This book explains the role of water in increasing the crop yields and its importance in associated industries, the importance of domestic rain water harvesting, the effect of surface runoff on the crops and farming methods, the loss of important soil nutrients due to runoff, the design of the water harvesting systems, the components needed in a water harvesting system, the different types of water harvesting systems, the importance of water harvesting techniques in developing countries, the rainfed agriculture system, and the role of ecosystem services in maintaining water harvesting systems.