Science, asked by Ajaygmailcom, 1 year ago

How does increasing lead to depletion of water table. explain ?

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Answered by Anonymous
4

Answer:-

Falling water table. The most observable consequence is often that you have to dig deeper to get water out. If there are any wells fed by artesian pressure nearby, those will stop their natural outflow. If there are plants nearby whose root systems depend on a water table that rises as high as their root systems, they will die.

Ground subsidence. If you remove enough subsurface fluid, the ground will fall because the interstices in the ground previously supported by the water are now empty. Aquifer compaction results in the land sinking noticeably. In the United States, the location of greatest land subsidence in recorded history was discovered through the work of Dr. Joseph Poland, who is pictured below in a famous photo he took in 1977 near Mendota, California, in a part of the central valley where unsustainable groundwater withdrawals had been going on for over a half century. The ground had fallen by 9 meters.

Increasing salinity. Depletion of freshwater aquifers can cause a pressure imbalance that causes the migration of saltier water from lower aquifers upwards into depths formerly occupied by freshwater.

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