1 　Introduction

Within this manual, the user will find the answers to questions such as:

What is a“large-scale irrigation (LSI)?
What data and parameters are needed to plan and design an LSI?
How to design a large-scale Irrigation scheme emphasising especially:
o diversion barrage or weir and intake (with auxiliary structures); and
o_ most common conveyance structures suitable for LSI.
What is important to know about operation and maintenance of such schemes?
Other relevant issues and practical examples.