This document classifies canals based on several factors: - Permanency (temporary or permanent) - Size (main canal, branch canal, major/minor distributaries, water courses) based on discharge rates - Alignment (watershed, contour, side slope) - Lining (lined or unlined) - Purpose (irrigation, power, navigation, water supply, feeder, carrier, multipurpose) - Financial returns (productive or protective) It provides details on the definitions and characteristics of each classification.