Rain Water Harvesting

what is RWH(Rain Water Harvesting)

Rain Water Harvesting is a way to capture rainwater when it rains, store that water in the soil or subsoil load and use later. This happens naturally in open rural areas. But congestion, over-paved metropolitan cities, we have to create methods to capture rainwater .

A sample urban installation

1. If you live in a dwelling house or an apartment complex tenant, already has 80% of the system of rainwater harvesting. They need to reorient the design of piping.

2.The current design of the house, take all the rainwater from the roof and all ground level areas surrounding the house and the flow of water into the street. (where street flooding, blocked drains and sewers for a few days before the water flows away from sewage)

3. If you do not sink, use of a well. In many parts of the country, old wells when they are dry, is used as landfill. Please clean the well of rainwater and put it .

4. collect the ground water flow and stop them at the door. Place a concrete slab with holes in it, build a trench 2 feet deep, the entire width of the door. Collect and connect a hose and water flow to a well or a baby too.

5. A water tanker bringing water from unknown sources and not tested for quality costs about Rs 1000 to 2500 rupees to 10,000 liters of water.

Industrial systems

Rainwater may also be used for groundwater recharge, where the runoff on the ground is collected and allowed to be absorbed, adding to the groundwater. In US, rooftop rainwater is collected and stored in sump.In India this includes Bawdis and johads, or ponds which collect the run-off from small streams in wide area. In India, reservoirs called tankas were used to store water; typically they were shallow with mud walls. Ancient tankas still exist in some places.

What types of RWH makes sense in the rural areas?

A.Build community wells in a few places in town. Within 10-20 feet from the well, the construction of a shaft with a hand pump well. Educate the villagers to keep the area around the well and the drill and clean - no washing (human, animals, motorcycles, clothing), no defecation.

B. If there are existing water tanks in the village, desilt and dredge every 3 years .

c. If there are some small rivers or streams, construction of check-dams across them to keep rainwater for use after the rains have stopped .