It is also called as rain water harvesting. It can be achieved as follows:
- Accumulation of rainwater for reuse on site.
- Collection of rainwater in well or shafts or borehole or pits.
- Formation of small dams to collect rainwater in mountains.
- Prevention of soil deposition in natural water bodies like lakes, ponds, ditches etc.
- Improvement of irrigation system in desert and mountain regions with the help of canals. Such as Indira Gandhi Canal Project.