Cone of depression

Cone of depression: The zone around a well in an unconfined aquifer that is normally saturated, but becomes unsaturated as a well is pumped, leaving an area where the water table dips down to form a cone shape.

Cone of depression: A depression in the groundwater table or potentiometric surface that has the shape of an inverted cone and develops around a well from which water is being withdrawn.

CONE OF DEPRESSION
Cone of depression (or "influence") is the draw down of the water table or potentiometric surface that happens when a well is pumped.

Cone of depression: Natural depression in the water table around a well during pumping
Confined aquifer: An aquifer that lies between two relatively impermeable rock layers ...

cone of depression : The area around a discharging well where the hydraulic head (potentiometric surface) in the aquifer has been lowered by pumping.

Cone of Depression: A depression in the water table that develops around a pumped well.
Cone of Influence: The depression, roughly conical in shape, produced in a water table by the pumping of water from a well.

cone of depression. The depression, roughly conical in
shape, produced in the water table by the pumping of water
from a well. Also see circle of influence and cone of ...

Cone of Depression
A conelike depression of the water table (or of a potentiometric surface of a confined aquifer) that is created in the vicinity of a well by pumping.

The circular outer edge of a depression produced in the water table by the pumping of water from a well . (See cone of depression.)
Source: Terms of the Environment
...

cone of depression The depression or drop in water level near a well, caused by the extraction of ground water from the well.

See also: Table, Water, Water table, Treatment, Pollutant