The previous fifth editions of the book received overwhelmingly positive feedback from both students and teachers. This has allowed the sixth edition of the book to be released so quickly. While the primary goals of the fifth edition remain the same as those of the fourth edition, the book has been thoroughly revised, and several new articles have been added. The topic has been presented in simple language. The fundamental principles underlying the design of various irrigation systems have been thoroughly explained. The book covers the entire syllabus of this subject for students enrolled in first-year courses at various Indian universities.