This document updates the existing Irrigation Engineering Manual 1998. The scope of the manual covers irrigation project preparation, from planning and surveys to design and evaluation. The manual mainly focuses on the hydrology, hydraulics, planning and design of hydraulic structures, canal layout, concept of structural design of irrigation infrastructure, and river training and flood control works. In addition, the manual covers crop planning, water demand assessment, and water balance assessment.The manual also includes a separate volume for the typical drawings planned for small irrigation schemes.
Documents produced under projects are material produced in the course of the project, or as outputs. This document dated March 2016 is provided for the ADB project 46463-002 in Bhutan.