RE: RAINWATER HARVESTING full report and ppt
What is rainwater harvesting-my article.doc (Size: 103.5 KB / Downloads: 112)
Water - H2O ,that means water contains one oxygen and two hydrogen atoms
Pure Drinking water, in adequate quantity and safe quality, is a basic requirement for life either for urban or rural people. According to Census 2001-around 22 per cent of households in India lack access to safe drinking water sources, like tap, hand pump and tube well
States of water
Water can be found in a
1. Liquid state
2. Solid state
4. Gaseous state (water vapor or steam).
5. Liquid crystal state.
Sources of water
1) Primary source of water - Rain is a primary source of water for us.
2) Secondary source of water -Rivers, lakes and groundwater are all secondary sources of water
Primary source of water is the ultimate source that feeds all these secondary sources and remains ignorant of its value. Hence it is necessary to understand the value of rain, and to make optimum use of the rainwater at the place where it falls.
Water management is an interdisciplinary field concerned with the management of water resources. Many national governments have departments which are in charge of water management, and regional governments often have smaller offices of their own to focus on this issue .
What is rainwater harvesting?
Every one might have studied the story of thirsty crow “a crow was very thirsty. Looked for water every where. Then saw a pot with a little water in it, could not reach the water. Then got an idea, picked up stone and dropped them into the pot one by one. Water came up then drank the water flew away happily” This water harvester of a crow could teach us. Let’s get on, like the crow. Fashion a drop by drop approach to meet our needs.
1) Recognize Rain is the source of all water
2) Recognize in India the monsoon is brief i.e. just 100 hours out of 8,760 hours in a year. But this is enough to meet our water needs, provide food security and eradicate rural poverty
3) The key component of water management is 'storage'
Rainwater harvesting, it means capturing rain where it falls or capturing the run off in our own village or town and using it. We can store it in tanks or we can use it to recharge groundwater. This is an age-old system our ancestor’s harvested rain just as naturally and now we all are forced to practice it. This is about making water all our business. This is about building our relationship with water with the environment.