Question 15 Marks
Write short note: Rainwater harvesting
Answer
View full question & answer→Rainwater harvesting is a method of increasing the availability of water and to collect rainwater and store it for later use. The basic idea behind rainwater harvesting is “Catch water where it falls”. The two main techniques of rainwater harvesting are:
$(1)$ Rooftop rainwater harvesting: In this system the rainwater is collected from the rooftop in a storage tank, through pipes. This water may contain soil from the roof and need filtering before it is used. Instead of collecting rainwater in the tank, the pipes can go directly into a pit in the ground. This then seeps into the soil to recharge or refill the ground water.
$(2)$ Another option is to allow water to go into the ground directly from the roadside drains that collect rainwater. The ground water level can be replenished by these techniques.
$(1)$ Rooftop rainwater harvesting: In this system the rainwater is collected from the rooftop in a storage tank, through pipes. This water may contain soil from the roof and need filtering before it is used. Instead of collecting rainwater in the tank, the pipes can go directly into a pit in the ground. This then seeps into the soil to recharge or refill the ground water.
$(2)$ Another option is to allow water to go into the ground directly from the roadside drains that collect rainwater. The ground water level can be replenished by these techniques.
