Question

The average depth of the water table in a particular city is found to be 200 m. What should be the depth of the borewell in order to fetch ground water?

• A. Less than 200m
• B. Greater than 200m
• C. Does not depend on the depth of water table
• D. Can’t be said

Answer 1

The correct option is B

Greater than 200m

The depth of the borewell should be more than 200 m because 200 m is the starting point of the water and as we go deeper, we can extract more water. Usually, it is advisable to keep the depth of borewell 5m more than the groundwater table.