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.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

References in periodicals archive ?

Then, two water table levels were taken into account for the calculations.

Preferential Water Infiltration Path in a Slow-Moving Clayey Earthslide Evidenced by Cross-Correlation of Hydrometeorological Time Series (Charlaix Landslide, French Western Alps)

Soil C[O.sub.2] concentrations, and hence emission rates, were influenced by the interaction between soil water content and water table depth, as shown by monitoring during a period of high soil temperature (mean 27.3[degrees]C, Fig.

Emission of C[O.sub.2] from tropical riparian forest soil is controlled by soil temperature, soil water content and depth to water table

The water tables in this area have mostly stabilized since 2008, though some wells continue to drop.

California North Coast water tables stable

Indiscriminate exploitation of groundwater during drought periods will lead to a lowering of water tables beyond replenish able limits.

THE GEO STATISTICAL APPROACH TO ASSESS THE GROUNDWATER DROUGHT BY USING STANDARDIZED WATER LEVEL INDEX (SWI) AND STANDARDISED PRECIPITATION INDEX (SPI) IN THE PESHAWAR REGIME OF PAKISTAN

The challenge of the confined work area coupled with the changing water table required the crew to drill short and deep bores.

Maui harnesses HDD for sewer solution

Three outlets at the bottom connected to Tygon tubing regulated the water table level in each column.

Transport of E. coli in a sandy soil as impacted by depth to water table

For CWT1, the water table control levels in different stages were selected based on previous studies on increasing rice yields in paddy fields of Southeast China [30].

Ammonia volatilization losses from paddy fields under controlled irrigation with different drainage treatments

Even though lowering water table is likely to accelerate nitrogen cycling, it is, however, difficult to predict the change in concentration of certain nitrogen compounds since different processes of N cycle are functioning simultaneously.

Nitrogen release in pristine and drained peat profiles in response to water table fluctuations: a mesocosm experiment

He added that farmers have drilled 21m deep and are drawing large quantities of underground water out, and water tables are decreasing at an accelerating rate in Punjab, Haryana, Rajasthan, Gujarat and Tamil Nadu.

'Falling water tables in India and other nations could threaten food supply globally'

While over- exploitation is leading to a fall in water table, the root cause of pollution of groundwater, according to Gupta, is lack of adequate capacity to treat waste water generated in cities.

DELHI ' S GREAT WATER FALL

He says: "At this time of year we don't see a reduction in the water table level even after reasonably dry days.

Solid base beneath the surface came to rescue at Punchestown

An overnight downpour left areas of standing water around the course yesterday and added to the already high water table level, which could particularly affect some of the course's 206 bunkers when play gets under way this morning.