This book is a text for beginning students in irrigation. It is designed to guide students from a basic knowledge of soils, botany, mathematics, and hydraulics to state-of-the-art irrigation system design and management. Although based on current design practices and the latest research, this book is not intended to be a design manual or a review of irrigation research. instead the method and order of presentation have been carefully developed and classroom tested to make this book an effective and useful teaching tool.Aim of this book is to present the principles and concepts of farm irrigation in a manner that maximizes student learning, understanding and motivation.The book contains 60 solved example problems, FORTRAN code for 7 computer programs (disks with these programs can be obtained from either the author or publisher), 197 homework problems (a solutions manual with code for an additional 23 computer programs is available), and more than 100 references for student use and enrichment. The introduction section of each chapter includes learning objectives and an overview of the material to be covered in the chapter. Most of the 177 equations in the book have a unit constant, K, which allows the use of either SI (the International System of Units) or English units.