Question

In cities, the bore wells have to be dug very deep to get water whereas in villages it is not so.why?give reason.

Answer 1

it happens because in case of cities...due to huge population and ongoing actions on infrastructure and construction a lot of ground water is wasted which is even decreased because of uprooting of trees. for this reason water level falls down and we need to dig deeper to reach the level unlike that in the case of villages. where we find a lot of vegetation and less population and cemented complexes

Answer 2

Answer:

This is so because of excessive use of water which depletes the ground water.

Towns and cities have asphalted roads and vast areas of soil are concreted. As a result, rain water cannot percolate to recharge ground water and the ground water level further decreases. Villages have larger areas of open soil surface and fewer asphalted roads and concrete surfaces. Thus, larger soil surface area is available for rain water to percolate into the soil easily and recharge the ground water. As a result, even shallow bore wells yield water.