Q.68
What is the term used to describe the process of lowering the water table around a well due to excessive pumping, resulting
in reduced water availability?
- Cone of Depression: A conical-shaped depression or dip in the water table (or piezometric surface in confined aquifers) centered around a pumped well, caused when the rate of extraction exceeds the immediate local transmissivity of the aquifer.
- Hydraulic Gradient: The inverted cone creates a hydraulic gradient causing water to flow radially inward toward the well intake screen.
- Comparison: Aquifer depletion represents regional, long-term irreversible lowering of water reserves. (Correct answer: Option 2)
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