Paragraph on Rain Water Harvesting

Rain water harvesting is the system of collection and storage of rainwater in to the tanks and other reservoirs for future use. Presently it is very important to conserve rain water so that there is no scarcity of this natural resource. It is practiced globally and several measures are taken to harvest rain water and prevent wastage of water. In modern times people are aware of the adverse effects of human activity on our environment. Thus, the concept of rain water harvesting is also gaining rapid momentum and people are playing their part in environmental conservation and making sensible use of this natural resource.

You will find below a number of short and long paragraphs on Rain Water Harvesting. We hope these Rain Water Harvesting paragraphs will help students in completing their school assignments. These will also help children to write and read out paragraphs with simple words and small sentences. Students can select any paragraph on Rain Water Harvesting according to their particular requirement.

Long and Short Paragraphs on Rain Water Harvesting

Rain Water Harvesting Paragraph 1 (100 words)

Rain water harvesting refers to the accumulation and storage of rain water in to natural reservoirs or tanks or the infiltration of surface water in to surface aquifers for reusing it later. Rain water harvesting is very important as it is the practice to prevent the wastage of water and use it in a number of ways. There are many methods through which it can be done like surface water collection system, rooftop method of harvesting, underground tanks, dams, slopes, barrages, water collection reservoirs, trenches etc. The harvested water ensures the smooth supply of water in future and prevents scarcity of water.


Rain Water Harvesting Paragraph 2 (150 words)

Rain water harvesting refers to the collection and storage of water for reuse. It can be used for various purposes later rather than allowing it to run off the gutters. It can be used for irrigation, gardens, domestic purposes and livestock. It can also be used as drinking water and groundwater storage. Rain water harvesting improves the supply of water throughout the year. With fluctuating climate changes and draining ground water storage, rain water harvesting helps to mitigate those effects.

It can help to recharge ground water storage and ensure the availability of water in the scarce zones. Rain water conservation is also practiced in individual homes and apartments. Though in modern times there are new methods and technology for harvesting rain water, it is much of a traditional practice also followed in rural areas. The rain water is always useful in times when the rainfall is scanty. It can be used in a number of ways whether harvested by traditional methods or with the help of new methods and technology.


Rain Water Harvesting Paragraph 3 (200 words)

Rain water harvesting is the technique of collecting and storing water to preserve it for future use. The harvested water can be stored for long-term use. Rain water harvesting is vital as locally available water can meet the demand of water and minimize the overall capital expenditure. Rain water can be used for domestic, agricultural and industrial purposes.


It is a widely used concept practiced all over the world. Since decades people have relied on the method of rain water harvesting for the supply of water. Rainwater is accumulated from rooftops and directed into tanks and cisterns. There are many techniques being implemented for harvesting rain water. In present times, the catchment area is directly connected to tanks, cisterns and reservoirs for storage.

Surface water storage, dams, underground tanks, barrage, trenches and rain barrels etc. are the techniques used for rain water harvesting. It is possible that due to insufficient rain, water sources may dry. Rain water harvesting is the best practice to be ready for such times. The harvested rainwater also has to be purified before using for drinking purpose and other daily use activities. Rainwater is a gift from nature so we should value the importance of this natural resource and use it wisely.


Rain Water Harvesting Paragraph 4 (250 words)

Rain water harvesting is the process in which the rain water is accumulated and stored for later use. Rain water harvesting has to be rightly used to keep the scarcity of water at bay. It is always wise to harvest rain water as its natural, clean and salt free source of water. However the quality of water has to be maintained depending on the end use.

Rain Water Filtration

The rain water can be purified, filtered and maintained in several ways. The catch area of rain water has to be cleaned and the pipes are to be flushed. Initially the flow of water can be diverted to run off water to waste. The floating draw-off mechanism can be used to obtain the improved quality of water. The presence of contaminants or any kind of waste can affect the quality of water. The contaminants may include air pollution, leaves, sand, dust, bird excrements, etc.

The filtration that removes the contaminants and purifies the water has to be done. The harvested rain water has to be treated and tested to ensure the quality. In industries the common practice used is pre-filtration to ensure the water directed to the tank is purified. The water supply system should meet the quality of water by applying preliminary filtration measures. Some methods of purifying the water are; solar sterilization, sediment filtration, use of chlorine or iodine, etc. The drinking water can also be purified through RO water purifier systems.


Thus, there are several ways in which water can be purified and has to be treated before use. Especially, when the water is to be used as drinking water it can’t be used without purification and filtration.


Rain Water Harvesting Paragraph 5 (300 words)

Water is one of the most important and basic needs for us and due to overpopulation and irregular rainfall, harvesting rain water is vital. Rain water harvesting is the technique used for collecting, storing and saving water for future use. When it rains the water pours off the roof top and runs down through the gutters or is directed towards the streets. With rain water harvesting water from the rooftops can be directed through pipelines or tubes in to the cistern or storage tank to save it for later use. Rain water is sustainable and high quality water source.

Rain Water Harvesting System

Rain water harvesting systems can be simple and complex. In residential areas the rain water harvesting is done with simple plumbing work as terrace is connected with a pipe directed to underground tank. The storage capacity of the underground tank is ideally sized to meet the need of daily water consumption throughout the dry season. The building rooftop is usually large enough to catch the rain water and maintain the flow. The size of underground tank should be enough to capture good quantity of water.

There are various other low-tech systems like surface water harvesting, pumping the water soaked in ground and storing it in cisterns. Before building the rain water harvesting system regions for high rainwater harvesting potential are to be detected with the help of rain water harvesting GIS maps. The main components of rain water harvesting system are; plenty of rainfall, catchment areas, pipes and gutters, storage system and tanks, filters and distribution system.


In urban populated areas good quality water is becoming scarce and costly. Rain water harvesting in urban areas meets the water supply and prevents the waste of water. Solar PV panels are being used to harvest the rain water in most parts of the country. Rain water harvesting is a boon during the scarce times. It not only meets the water supply but maintains our environment too.


Rain Water Harvesting Paragraph 6 (350 words)

Rain water harvesting is the accumulation, storage, preservation and filtration of rain water for future use of water as drinking water or for several other uses. The stored rain water has to be maintained regularly. The main purpose of rain water harvesting is to channel the rain water from the catchment surface such as roof top or other solid surface and then direct it through distribution system in to the storage tanks.

Benefits of Rain Water Harvesting

  • Mostly during water restrains rain water harvesting provides independent supply of water where the clean water is costly for people in rural areas, the harvested water will be a cheap source of potable water and can be stored for long term. This practice is common by people in independent residence and buildings.
  • In developed countries, harvested rain water is the source of supply and also reduces the cost of household water consumption. In fluctuating climates rain water harvesting systems are helpful in capturing the rain water when the rain falls. Most of the countries with unpredictable environment use rain water harvesting as it’s the economical and reliable source of clean water free of salinity and salts. It meets the water supply and prevents the wastage of water.
  • Rainwater is specially used for irrigation facility. Soil ridges are built to trap rain water and prevent it to run off the slopes, this captures enough water for crops to grow. Dams and ponds can be constructed to store large quantity of water for irrigation of crops in future.
  • Rain water harvesting lessens the impact of flooding. Due to rain water harvesting less water is directed towards sewer systems and it reduces the storm water to run off in fresh water bodies. This prevents the polluting of water bodies too.
  • The underground water sources are gradually being strained in many regions. Construction of deeper wells is expensive and can damage the natural environment. Thus, this source of rainwater is dependable and effective. Harvested rain water can be used when the ground water supplies have been drained.


There are various benefits and uses of rain water harvesting. However harvesting systems have to be designed functioned and maintained to ensure the quality of water. The water also needs to be purified and filtered for use.


Rain Water Harvesting Paragraph 7 (400 Words)

Rain water harvesting is the process of collecting, storing and preserving water for using it later. The methods are traditional as well as modern and simple as well as complex. Some techniques are implemented by government with planning throughout the country and some are practiced independently by people at their home.

Methods for Rain Water Harvesting

Here are some methods for harvesting rain water:

Surface Water Storage System: The water directly collected on ground is the surface water. The water usually runs off the slopes and gathers towards the point of dispersion where it gets collected. This method enables the collection of water from the ground surface and with the help of drainage pipes the water is directed to the rivers, ponds, wells and other water bodies. Thus, the water can later be used for several purposes.

Rooftop System: This is a traditional method and is also practiced by individuals at home more so in the rural areas. In this method, the water that is collected on the rooftop of the building is directed towards the water containers or tanks through pipes. The water from the rooftops can also be directed towards the barrels or to refill the underground borehole.

Dams: The rain water is directly collected in dams and the accumulated surface water is directed towards the dam. The dam water is used for several purposes after purification. The water is also supplied for domestic use for the people.

Underground Tanks: Underground tanks are constructed for water storage. Water is directed to the underground tanks through pipelines.

Rain Saucer: Rain saucer is a great way to collect rain water directly. The rain saucer has a huge funnel like structure like an upside down umbrella on the top of the water container which directs the water in to the container.

Trenches: In this method rain water is directed towards the farms through trenches and the water is used for irrigation purpose.

Solar power panels: Solar power panels are used in most parts of the world for harvesting rain water. It provides good quality water and can be used as drinking water with simple filtration process.

Flooded forest: The harvesting of rain water can also be done by growing flooded forest. These are the forests that capture large amount of rain water.


Thus, there are various different methods that can be practiced for harvesting the rain water to prevent the insufficiency and waste of water. Water can be stored and used throughout the year with the help of this method.




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