- the planar, underground surface beneath which earth materials, as soil or rock, are saturated with water.
- Architecture. a projecting stringcourse or similar structural member placed so as to divert rain water from a building.
Origin of water table
late Middle English word dating back to 1400–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for water table
The water-table should be at least two feet from the surface.Manual of American Grape-Growing
U. P. Hedrick
If you were planting on land where the water-table is low, you would leave more tap-root?
A member: I should think that would depend quite a little on the height of the water-table.
Mr. Lake: But the capillarity of the soil provides water for the tree above the water-table.
Would you feel like saying that a water-table at 24 inches was neither too low nor too high?
- the surface of the water-saturated part of the ground, usually following approximately the contours of the overlying land surface
- an offset or string course that has a moulding designed to throw rainwater clear of the wall below
- The upper surface of an area filled with groundwater, separating the zone of aeration (the subsurface region of soil and rocks in which the pores are filled with air and usually some water) from the zone of saturation (the subsurface region in which the pores are filled only with water). Water tables rise and fall with seasonal moisture, water absorption by vegetation, and the withdrawal of groundwater from wells, among other factors. The water table is not flat but has peaks and valleys that generally conform to the overlying land surface. Compare potentiometric surface.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The depth (measured from the surface of the Earth) at which underground water is first encountered.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.