water table

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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, and depends on the degree to which the groundwater lost due to environmental reasons or human use, is replenished.

Water table

A horizontal offset in a wall sloped on the top to throw off water running down the wall.

Water Table


the water surface of rivers, lakes, and other bodies of water or the surface of unpressured ground-water. In the latter case the upper boundary (surface) of groundwater in the water-bearing stratum is the water table. The groundwater table slopes in the direction of water movement and reflects the relief of the surface in subdued form. If the groundwater fills enclosed depressions in a water-resistant bed, its surface becomes horizontal. The outlines of the groundwater table in plan view are depicted on a map by means of water table contours.

water table

[′wȯd·ər ‚tā·bəl]
(building construction)
A ledge or slight projection of the masonry or wood construction on the exterior of a foundation wall, or just above it, to protect the foundation by directing rainwater away from the wall. Also known as canting strip.
The planar surface between the zone of saturation and the zone of aeration. Also known as free-water elevation; free-water surface; groundwater level; groundwater surface; groundwater table; level of saturation; phreatic surface; plane of saturation; saturated surface; water level; waterline.

water table

water table, 1
1. A horizontal exterior ledge on a wall, pier, buttress, etc.; often sloped and provided with a drip molding to prevent water from running down the face of the lower portion; also called an offset, 1. Also see base course, drip cap.
2. Same as groundwater level.

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
References in periodicals archive ?
Strategies for salinity management aim to reduce the amount of water recharging into watertables.
Despite this clear influence, we must note that the rules of the Cubist regression trees (Table 4) did not include depth to watertable as an explanatory variable to predict salinity.
2000) and have related to changes in the rate of rise of watertables (George et al.
But saltbush is unlikely to help lower watertables because it drinks relatively slowly (1 mm/day) from only the top 20-30 cm of the soil profile.
In this way, the depth of the shallow watertable at Pine Ridge, and consequently its discharge to the surface, are controlled by pressure in the Gunnedah aquifer.
As much as 7 percent of the gross cultivated area has a watertable depth of less than three feet, while the production virtually becomes uneconomical around two feet.
Unfortunately, the watertable rose in September 2010 and resulted in the AETLs at 4.
Each groundwater monitoring site will comprise of a deep piezometer paired with a shallow watertable observation bore.
Daulat WE, Clymo RS (1989) Effects of temperature and watertable on the efflux of methane from peatland surface cores.
Side by side, under blazing lights, three river red gums (Eucalyptus camaldulensis) are growing in slim cylinders containing a slightly saline watertable (2 dS/m).
5 million hectares (about 25 percent of irrigated lands) being affected by waterlogging and salinity (of which 8 percent is seriously affected), and to another 8 million hectares being vulnerable to waterlogging because the watertable is within 10 feet of the surface [Khan (1991)].
However, strong salinisation and the high tidal influence to the watertable prevent Fluvisol development.