Question

Why rainwater harvesting is essentially required in present times? Explain various methods available for rainwater harvesting. (With examples)

(a) To increase flooding, Methods: Pits and Ditches
(b) To conserve water, Methods: Rooftop Collection and Percolation Pits
(c) To decrease groundwater levels, Methods: Discharge into Drains
(d) To promote water scarcity, Methods: Wasteful Disposal

Answer 1

Rainwater harvesting is required in present times due to its various benefits. Different methods like pits, ditches, rooftop collection, percolation pits, and discharge into drains can be used for rainwater harvesting.

option b is the correct

Step-by-step explanation:

Rainwater harvesting is essentially required in present times because it helps to:

1. Increase flooding by using methods like pits and ditches that capture excess rainwater.
2. Conserve water by implementing methods like rooftop collection and percolation pits that collect and store rainwater for future use.
3. Decrease groundwater levels by discharging excess rainwater into drains.
4. Promote water scarcity through wasteful disposal methods that result in the loss of usable water.

Rainwater harvesting methods vary, but some examples include:

• Building pits and ditches to collect excess rainwater.
• Collecting rainwater from rooftops using gutters and storing it in tanks or barrels.
• Creating percolation pits to allow rainwater to seep into the ground and recharge groundwater.