RECHARGE WELLS

09.05.2024

RECHARGE WELLS

Why in the news?                          

           The Bangalore Water Supply and Sewerage Board has constructed 986 percolation/recharge wells across the city within a span of one month.

Key Point

• The current water crisis in Bengaluru is not solely due to a lack of water from the Cauvery River. Instead, it arises from inefficient rainwater harvesting practices and inadequate water tanks for recharging groundwater.

About the Recharge wells

• These wells  are structures designed to directly recharge groundwater.
• They play a crucial role in replenishing aquifers and maintaining sustainable water availability.
• These wells are typically deep shafts (ranging from 0.5 to 3 meters in diameter and 10 to 15 meters deep).
• They allow surplus water (such as rainwater) to infiltrate into the aquifer, effectively recharging the groundwater.

Benefits of Recharge Wells:

•  By allowing rainwater to percolate into the ground, recharge wells help maintain groundwater levels. This is especially important during dry periods or when wells are at risk of drying up.
•  These wells contribute to overall environmental health by ensuring a balanced water cycle. They prevent excessive runoff and erosion.
• Farmers with augmented water resources can secure two to three crops a year, improving their income and quality of life. Efficient water use also reduces input costs for irrigation and labour.
•  In urban areas, recharge wells help manage stormwater runoff, reduce flooding, and maintain stable water tables.
• Rising groundwater levels due to recharge wells can save energy. For instance, a 1-meter rise in water level saves approximately 0.4 kWh of electricity.

                                                      Source: Indian Express

With reference to the recharge wells, consider the following statements:

1.These wells are structures designed to directly recharge groundwater.

2.They play a crucial role in replenishing aquifers and maintaining sustainable water availability.

3.In urban areas, recharge wells help manage stormwater runoff, reduce flooding, and maintain stable water tables.

How many of the statements given above are correct?

A.Only one

B.Only two

C.All three

D.None

Answer C