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water table
(redirected from Cone of depression)

   Also found in: Wikipedia, Hutchinson 0.03 sec.
water table, the top zone of soil and rock in which all voids are saturated with water. The level of the water table varies with topography and climate.

water table

 or groundwater table

Enlarge picture
Seasonal variations in groundwater levels.
(credit: © Merriam-Webster Inc.)
Surface of a body of underground water below which the soil or rocks are permanently saturated with water. The water table separates the groundwater zone (zone of saturation) that lies below it from the zone of aeration that lies above it. The water table fluctuates both with the seasons and from year to year because it is affected by climatic variations and by the amount of precipitation used by vegetation. It also is affected by withdrawing excessive amounts of water from wells or by recharging them artificially. See also aquifer.


water table
1. the surface of the water-saturated part of the ground, usually following approximately the contours of the overlying land surface
2. an offset or string course that has a moulding designed to throw rainwater clear of the wall below


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