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Rainwater technique is an environmental technique to store the rainwater into bore wells and pits for future use. It has helped in the development of certain areas of India in the following manner:
a. The rainwater harvesting technique is an extremely cheap and environmentally friendly technique.
b. It helps to recharge the groundwater cycle for different uses.
c. It helps in the prevention of soil erosion and flooding situation.
d. It dilutes the pollutants such as fluoride and nitrate and improves the quality of groundwater.
e. In coastal areas, it can be used to recharge aquifers by arresting saltwater intrusion.
f. It creates a sense of awareness and sensitivity among the people regarding the benefit of conservation of water.
g. It has helped to solve the water dispute among many states and communities.
h. In Tamilnadu, the water harvesting structure has been made compulsory in the houses.
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