What is Rain Water Harvesting and Its Need? Rain Harvesting

What is Rain Water Harvesting
Rain Harvesting

What is Rain Water Harvesting and Its Need?

Here we will learn what is Rainwater Harvesting? How to Harvest Rain Water? and Advantages and disadvantages of Rain Harvesting

All living things, including plants, animals, and humans, need water to survive and perform various cellular functions. Have you ever imagined a day without water?

No, we don’t, it’s hard to imagine. We all use water for daily activities such as cleaning, washing, bathing, cooking, drinking, and other household and industrial purposes.

Water is a valuable, essential, and abiotic component of the ecosystem. Today we are all moving towards water scarcity, the main reason for which is the lack of water conservation and pollution of water bodies. So, we cannot waste a single drop of water and start conserving water for further use.

Different methods are used for water conservation and we are learning about the rainwater harvesting system here.



Rainwater harvesting is a simple process or technology used to collect, store and purify rainwater from roofs, parks, roads, open spaces, etc. for later use.



A rainwater harvesting system has the following components:

i. Catchment– Used to collect and store captured rainwater.

ii. Conveyance system – It is used to transport the harvested water from the fishery to the recharge area.

iii. Flush – Used to flush misspellings before it rains.

iv. Filter – Used to filter collected rainwater and remove contaminants.

v. Tanks and Recharge Structures: Used to store ready-made filtered water.

The rainwater harvesting process involves the collection and storage of rainwater with the help of artificially designed systems, which artificially repair natural or man-made water bodies such as roofs, compounds, rock surfaces, and mountain slopes, artificial or semi-deformed surface.

Several factors play an important role in the amount of water harvested. Some of these factors are:

i. The quantum of runoff

ii. Catchment Features

iii. Environmental impact

iv. Technology availability

v. Storage tank capacity

vi. Types of a roof, its slope, and its contents

vii. Frequency, quantity, and quality of rain

viii. The speed and ease with which rainwater enters the soil to recharge groundwater.



Rainwater harvesting is one of the best practices that can be practiced and followed to help with water conservation. Today, the lack of good quality water has become a major cause for concern. However, clean and quality rainwater can be used for irrigation, washing, cleaning, bathing, cooking, and other livestock needs.


The advantages of rainwater harvesting system are listed below:

i. Cost reduced

ii. Helps reduce water bills.

iii. Reduces water demand.

iv. Reduces the demand for imported water.

v. Promotes water and energy conservation.

vi. Improvement in quality and quantity of spring water.

vii. No treatment system is required for landscape irrigation.

viii. This technology is relatively simple and easy to install and operate.

ix. It reduces surface water pollution with erosion, stormwater runoff, flooding, fertilizer, pesticides, metals and other debris.

x. It is an excellent source of irrigation water free of chemicals and dissolved salts and free of all minerals.



In addition to the major benefits, there are also some disadvantages to rainwater harvesting systems such as unpredictable rainfall and the availability of a proper storage system.

Listed below are some of the disadvantages of rainwater harvesting:

i. Requires regular maintenance.

ii. Installation requires some technical skills.

iii. Limited and non-rainwater supply cannot be limited.

iv. If not installed properly, it can attract mosquitoes and other waterborne diseases.

v. A major drawback of the rainwater harvesting system is the storage limit.


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What do you learn from rainwater harvesting?

Rainwater harvesting is the process of storing and storing rainwater for reuse.

What are the different methods of rainwater harvesting?

i. Various methods of rainwater harvesting include:

ii. Roof rainwater harvesting

iii. Surface flow yield

iv. First, flush

v. Transportation

vi. Climb the water

vii. Filter

What is the importance of rainwater harvesting?

Rainwater harvesting is a sustainable process that helps conserve water for future use. Water scarcity is a major concern in today’s world. Harvesting is a good way to conserve water.

What are the benefits of rainwater harvesting?

The advantages of rainwater harvesting are:

i. It is inexpensive

ii. Conserves water

iii. Water source for landscape irrigation

iv. This is a simple method and easy to practice

v. It reduces soil erosion and water pollution caused by fertilizers and pesticides.

What are the factors that affect the amount of rainwater harvesting?

Factors influencing the amount of rainwater harvesting are:

i. Catchment facilities

ii. Quantum of runoff

iii. Storage tank capacity


Check the article on the human digestive system


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January 20, 2021

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