The application of water to plants at necessary intervals is known as irrigation. It is used to ensure the proper growth of agricultural crops and maintain landscapes. Irrigation plays a key role in re-vegetating disturbed soils in dry areas and during the times of less than average rainfall. Irrigation systems are also used for dust suppression, cooling livestock and protecting crops from frost. Some of the common methods of irrigation are surface irrigation, sprinkler irrigation and subsurface irrigation. There are various sources of water which can be used for irrigation such as groundwater, surface water and treated wastewater. The topics covered in this extensive textbook deal with the core aspects of irrigation. It is a valuable compilation of topics, ranging from the basic to the most complex methods in this field. Those in search of information to further their knowledge will be greatly assisted by this book.