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Renu's grandmother shows her a dried-up well and tells her that 15-20 years ago there was water in the well, but now it has completely dried up. What could be the reason(s) for drying up of water in the well ? A. The soil around the trees, well and nearby area is now covered with cement. B. A lot of boring pumps have come up in the nearby area. C. Nobody uses the well as there are taps in everybody's house now.

Renu's grandmother shows her a dried-up well and tells her that 15-20 years ago there was water in the well, but now it has completely dried up. What could be the reason(s) for drying up of water in the well ? A. The soil around the trees, well and nearby area is now covered with cement. B. A lot of boring pumps have come up in the nearby area. C. Nobody uses the well as there are taps in everybody's house now. Correct Answer A and B

Natural sources of water: 

The oceans, seas, rivers, lakes, springs, waterfalls, glaciers or the snow-capped mountains, rain, the ponds, the groundwater, etc. Of all the water available on earth, potable or water fit for human consumption can be found only in the rainwater, inland surface water bodies like rivers, lakes, ponds, and underground water from wells and handpumps. The major portion in the oceans and seas is salty and cannot be consumed as such. 

Important Points

Renu's grandmother shows her a dried-up well and tells her that 15-20 years ago there was water in the well, but now it has completely dried up.

The reasons for drying up of water in wells are:

  • A lot of boring pumps have come up in the nearby area.
  • The soil around the trees, well and nearby area is now covered with cement.

Key Points

Depletion of Ground-water sources

The supply of groundwater is not unlimited, nor it is always available in good quality. In many cases, the abstraction of excessive quantities of groundwater has resulted in the drying up of wells, salt-water intrusion, and drying up of rivers that receive their flows in dry seasons from groundwater. The reasons for drying up of water in the well are cementification of surrounding areas and a lot of boring pumps, creates groundwater levels very low.

  • Depletion of groundwater increases pumping costs, causes wells and rivers to dry up, and in coastal regions seawater can intrude in groundwater.
  • A well will go dry when water levels drop below a pump intake.
  • This does not mean that a dry well will never have water in it again, as the water level may come back through time it will get water back.
  • The water level in a well depends on several things, such as
    • The soil around the trees, well and nearby area is now covered with cement.
    • A lot of boring pumps have come up in the nearby area.
    • The depth of the well
    • The type (confined or unconfined) of aquifer the good taps
    • The amount of pumping that occurs in this aquifer, and the amount of recharge occurring. 
    • The increase in population also needs more use of water.
    • Due to all these reasons water in the wells dries up fastly.

Hence, we can conclude that statements A and B are correct regarding the scenario given in the question.

Related Questions

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