22.-Rain water harwesting techniques

Abstract

Ground water is a very valuable economic comtmdity. It is recovered from wells for domestic, industrial and agricultural use. The conservation of around water is very important because it moves from soil and many years may be required to replace the hastily pumped out water. Therefore, in areas where ground water is used extensively, care must be taken to see that no extra water is withdrawn in a year than the quantity replenished by natural process. To avoid depletion of ground water level, the aquifers (ground water bodies) must be recharged in whatever way possible. There is an urgent need for harvesting every drop of rain water, since that is the only source of ground water. Inspite of astonishing achievements in the field of Science and Technology, nature remains to be a mystery for human beings. Though scientists and technologists are doing experiments all over the world to obtain water by cloud seedings, desalination and by various other artificial means, still shortage of water is a perpetual phenomenon through out the world.

Getting water by the above mentioned means will only be a distant possibility but cannot be a permanent solution. Nature is always kind to us. The only problem is that we are not responding to it in a matching manner.

Our subcontinent is fortunate to get a fairly good amount of rainfall. If only we save each and every drop of water and recharge the underground aquifer, what a great relief and what a simple solution it will be for the water starving citizens and the owners of parched lands of the surrounding area. Therefore the solution lies in the simple harvesting of rainwater.