A conical depression of the water table surrounding a well after heavy pumping.

(3) a change (depression) in the water table surface at the site of an active well, resulting from the withdrawal of water.

A depression in groundwater levels around a well in response to groundwater withdrawal or pumping water.

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. The shape of the cone is influenced by porosity and the water yield or pumping rate of the well. The land surface overlying the cone of depression is referred to as the area of influence.

Cone of depression (or "influence") is the draw-down of the water table or potentiometric surface that happens when a well is pumped. The drawdown cones of two wells close together may overlap so that if the wells are pumped simultaneously they will compete with each other for available groundwater (well interference).

an area in the shape of a V within an aquifer where de-watering begins and causes a trench or a trough-like hollowing of the aquifer

A conical lowering of the water table or pressure surface in an aquifer resulting from water withdrawal, such as pumping.

a funnel-shaped drop in the aquifer's surface

The cone-shaped depression in the groundwater level around a well during pumping.

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

the three-dimensional area of water table drawdown created by a pumping well. A pumping well creates an artificial discharge area by drawing down (lowering) the water table around the well.

the zone (around a well in an unconfined aquifer) that is normally saturated, but becomes unsaturated as a well is pumped; an area where the water table dips down forming a "V" or cone shape due to a pumping well

a change (depression) in the water table surface at the site of an active well, due to water withdrawl.

Natural depression in the water table around a well during pumping.

An area in a water table along which water has descended into a well to replace water drawn out, leaving a gap shaped like an inverted cone.

A depression in the potentiometric surface in the area around a well, or group of wells, from which water is being withdrawn.

the area around a discharging well where the hydraulic head (potentiometric surface) in the aquifer has been lowered by pumping. In an unconfined aquifer, the cone of depression is a cone-shaped depression in the water table where the media has actually been dewatered.

A depression in the water table that develops around a pumped well.

A depression in the surface of groundwater table that develops around a well from which water is being withdrawn.

The cone-shaped area around a well where the groundwater level is lowered by pumping. The shape of the cone is influenced by the underground porosity and water yield of the well.

Area below a well or dewatering site where the water table or potentiometric surface is drawn down below its natural (static) level due to removal of ground water.

the shape of the water table in the area immediately surrounding a pumping well. The water draws down in a radial cone-shape around the pumping well, with the deepest drawdown immediately at the well, tapering off with distance from the pumping well.

Created when groundwater is pumped from a well or underground mine. Groundwater flow changes direction in a portion of the watershed. Instead of moving toward the natural discharge area, the groundwater within the influence of the pump flows toward the well (or mine) from every direction. The pumping well creates an artificial discharge area by drawing down (lowering) the water table around the well. This area of drawdown is called the cone of depression. Molycorp has created a large cone of depression through such a drawdown process, from pumping out its underground workings. The theory is that most groundwater contaminants will be captured in the cone of depression and safely removed from the groundwater by continued pumping. The success of capturing acid rock drainage using this method has not been adequately demonstrated.

The depressed shape of the water table around a well after active pumping. The water table adjacent to the well is drawn down by the water removal.

A cone-shaped depression in the water table around a well or a group of wells. The cone is created by withdrawing ground water more quickly than it can be replaced.

The resulting water table form representing the gradient towards a well caused by withdrawals from the aquifer.

Cone shaped depression occurring horizontally across a water table. Causes by excessive removal of groundwater by a surface well.

The depression, roughly conical in shape, produced in the water table by the pumping of water from a well.

Angle of depression, during dewatering, of a water table.

(Also called cone of influence.) A depression, roughly conical in shape, formed in a water table or piezometric surface by the withdrawal of water from a well.