Write a short article on Rainwater
harvesting.
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Answers
Answer:
Rainwater harvesting (RWH) is the collection and storage of rain, rather than allowing it to run off. Rainwater is collected from a roof-like surface and redirected to a tank, cistern, deep pit (well, shaft, or borehole), aquifer, or a reservoir with percolation, so that it seeps down and restores the ground water. Dew and fog can also be collected with nets or other tools. Rainwater harvesting differs from stormwater harvesting as the runoff is collected from roofs, rather than creeks, drains, roads, or any other land surfaces.
Its uses include watering gardens, livestock, irrigation, domestic use with proper treatment, and domestic heating. The harvested water can also be committed to longer-term storage or groundwater recharge.
Rainwater harvesting is one of the simplest and oldest methods of self-supply of water for households, and residential and household-scale projects, usually financed by the user. However, larger systems for schools, hospitals, and other facilities can run up costs only able to be financed by owners, organizations, and governmental units.
Explanation:
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Answer:
Rain water harvesting is the collection of rainwater into the man made resources or any natural resource like pond, lake, etc at the same place where it falls from rooftops or ground. Two main techniques of rainwater harvesting are storage for future use and recharge into the ground. It can be used for crop harvesting, gardening, toilets, etc. Following are the benefits of rainwater harvesting at individual or city-wide level:
It helps in reducing the water supply bills especially to the institutions.Rainwater recharged to the ground positively affects groundwater quality by diluting fluorides, nitrates and its salinity.It contains almost neutral pH and zero hardness which makes it more able to be used in homes, industries, institutions and other commercial establishments.It may reduce the stress of public water supply sources.Recharge of rainwater to the ground prevents sea-water immersion into the fresh water bodies in the coastal areas.It helps in controlling urban flooding if people do rainwater harvesting from rooftops.It reduces water demands of people from the municipality thus lessens energy consumption too in distributing water all through the city
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