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.
(hydrology)
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 ?
In this section, the analysis of four performance indicators namely: i) watertable fluctuations, ii) groundwater quality, iii) soil (surface and profile) salinity, and iv) cropping intensity are discussed.
The model predicted that the watertable in the Subdivision would go down to 6.78 meters from 5.78 meters, thus, falling by one meter from the current level.
Before land clearance, most watertables were deep below the surface, and the undissolved salt was immobile in the soil.
Dense shelterbelts (coniferous trees, thick shrubs such as carragana) protect the soil from drying out in winter by keeping snow on the ground, which raises the watertable and reduces the need to irrigate during summer.
Measurements were made of existing septic tanks and field lines to determine depth, linear footage, and separation from the wet season watertable, surface waters, wells, and other features Homeowners provided additional data by questionnaire regarding the age of their septic tank systems, number of household occupants, repairs to their septic system, and plumbing problems.
Examples include: (a) contamination of land (soil or water) through dumping or disposal of hazardous wastes on that land; (b) contamination of groundwater underlying agricultural land where chemicals have leached through the soil to the watertable; and (c) contamination of soils in urban areas from industrial "fallout" such as air pollutants that settle quickly after emission or crumbling lead paint.
To inaugurate the second space at the new gallery space, Wilson produced watertable, 1994, a work that builds on both of these earlier pieces.
salty irrigation water or dissolved fertiliser salts), or the rising of salty water from an underlying watertable. This connectivity is why it is crucial to concurrently monitor salinity and sodicity at multiple depths in the soil, although this is rarely considered.
Inflow and out flow approach change in watertable depth approach and a computer model (Surfer) approach.
This suggests that the adjacent native vegetation is affording some protection, thus slowing rates of watertable rise.
- The depth of the watertable and the circulation regime of groundwater are responsible for the capillary discharge in the playa surface and the accumulation of surface saline crusts.