Powered by Blogger.

Sunday, August 16, 2009

Water Conservation: The Cry of the Day

No comments :
The National Water Policy - 1987 declared water as a scarce and precious resource to be developed and conserved on an integrated and environmentally sound basis. According to the Planning Commission of India the Annual Flow of water in the Indian Rivers is 1869 cubic km out of which we use about 30 percent only. The remaining water goes to sea causing floods enroute. It is due to water logging, salting or silting or even drought that we are bound to face irrigation problems from thousands of years.

Many parts of the world have to suffer from water crisis, drought and crop failure. Most of our fresh water resources are under heavy stress which is going on increasing. This stress is generated due to overuse, water pollution, and degradation of ecosystems etc. reasons.

A report of the United Nations Environment Programme - about 80 countries of the world suffered from a serious water crisis during mid-1990s. During 2000 the World Water Council predicted that the demand for water use was expected to increase by 40 percent by 2020. The agriculture would require 17 percent more water for producing food.

What is important for all the time is not to repeat earlier mistakes of carelessness towards water.. The management of watersheds , recharging of ground water, the traditional practices of water conservation or harvesting may be some of the techniques of water harvesting that can always be applied to conserve water.

The conservation of water can be done at source in a watershed, which is a reservoire in which the rainwater falling on a vast area is made to accumulate for recharging the water table and for keeping it reserved for domestic and agricultural purposes of local communities. This prctice is called as Integrated Watershed Development. The civil structures like contour bunding, trenches,, gully plugs, check dams and percolation tanks are constructed to conserve water and to recharge the ground water. These activities demand active participation of villagers at the local level. The conservation of soil water, and rcharging of ground water are major objectives to be achieved during watershed management.

The areas covered under the watershed management are - management of soil and water, sustainable agriculture, improved animal husbandry practices, agro forestry, management of rural energy and community development. Under the drought conditions as experienced this year adequate quantity and quality of usable water are to be assured through cultivation of less water consuming crop varieties, protection and maintenance of water bodies including the traditional ones, construction of check dams, development of water treatment facilities, disposal of waste water, and recharging of ground water.

Collection and utilization of rainwater is a traditional practice which has been adopted in the water scarce areas of India. Now that the overuse of ground waterin most parts of the world has pushed down the ground water at a critical level, it is most essential to bring back the depleted water level is essential and it can be done by allowing rain water to run down inside the earth.

The rainwater can be collected in many ways for example by watershed development, by roof-top water harvesting, and by adopting traditional methods. Ahar-pyne, tanka, johads, khadin, kund, etc.The traditional water harvesting structures should be designed, revived ans new structures should be developed for the protection and preservation of water.

No comments :

Post a Comment

Note: Only a member of this blog may post a comment.