Why in news
Problem: Visakhapatnam is facing water scarcity due to rapid expansion and population growth.
Solution: Residents are using injection borewells to recharge groundwater levels.
Method: Rainwater is collected from rooftops and large open spaces.
Process:
Water is filtered.
Water is pumped into deeper layers of the earth through the borewell.
Benefits:
Groundwater level rises significantly.
Recharge is possible even after the rainy season.
The water doesn't simply fill a cavity and disappear.
The water gets absorbed by the surrounding soil and rock formations slowly, acting like a natural reservoir.
This gradual release allows the water to be available even during dry periods following the rainy season
Reduces soil erosion.
Effectiveness:
Works best in productive borewells and non-rocky areas.
Alternative rainwater harvesting methods:
Storing rainwater in sumps or tanks for non-drinking uses.
COMMENTS