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Reviving Ancient Methods of Harvesting Rainwater

Updated on April 23, 2009

Ancient method of Harvesting Rain Water

ROOF WATER: simple and inexpensive. Slightly sloping roof allow water to run into gutters, down
Pipes, and into specially prepared drums. Filters of write mesh, sand, gravel, and charcoal clean the
Water. It is funneled into underground sumps or aboveground tanks. Tanks are sealed to keep out air
Sunlight and organic matter: treatment with alum reduces turbidity: and bleaching powder kill
Bacteria. This water can be collected into wells or directed underground to replenish the water
Table. Most popular urban method.


NAULAS: stone walls built across a stream to dam the side cut down evaporation and medicinal
Planted thrown into the small reservoirs purify the water.

PERCOLATION TANKS, RAPATS: Small tanks built on sandy or rocky soil to store rainwater. Some
Of the water is used, but the remainder percolates through to aquifers, which replenish wells.

BHANDARAS: Underground tanks built to intercept water from springs, channeling it to
Storage tanks for city use.

QANATS: vertical shafts in hilly areas to catch rainwater. The water is collected in underground
Channels that carry it by gravity over long distances to storage wells.

INTEGRATEDTANKS: Tanks that overflow into a series of lower tanks to catch the rainwater that
Is funneled through gutters.
Learn more at http://moneyinus.blogspot.com

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