It includes all the policies, strategies and activities made to manage the natural resource water, to protect the water environment and to meet the current and future human demand. Some of them are as follows-
- Use of water strictly according to the need.
- Covering of bodies like wells.
- Avoiding pollution of water.
- Repairing of leaky taps to save water.
- Prohibition of atomic test in the oceans.
- Less industrialization in the coastal regions.
- Spraying of hexadecanol or cetyl alcohol over the desert or reservoirs to prevent evaporation. It form thin layer that retard evaporation.
- Limited use of underground water which is constantly getting less.
- Use of fountain irrigation and drip irrigation techniques to reduce water loss caused in surface irrigation.
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.