Question

The lowering effect on the water table about the base of the well stem is called a(n):

aquiclude
artesian surface
cone of depression
speleothem

Answer 1

Cone of depression...

Answer 2

The correct answer is OPTION C: Cone of Depression.

• Aquifers are depleted when wells are pumped. In an open aquifer, this is a genuine drop in water levels (water table).
• When the pressure head surrounding a pumped well falls in confined aquifers, a cone of depression appears.
• The water level falls when a well is pumped.
• A gradient between the water in the surrounding aquifer and the water in the well is created when the well's water level is lowered.
• A flow from the surrounding aquifer into the well happens when water levels or pressure change from high to low.