Unit 1

Introduction to irrigation

1.1 National water policy.

1.2 Definition of irrigation. Necessity of irrigation advantages/disadvantages of irrigation.

1.3 Types of irrigation projects, data collected for irrigation project.

1.4 Water logging and efflorescence – effects, causes, preventive & remedial measures

Hydrology

1.5 Surface Hydrology: study of rain gauges, mean rainfall over a catchment by different methods.

Runoff – definition, factors affecting runoff, Method to estimate runoff, yield, dependable yield