Let us know if you have suggestions to improve this article (requires login). During the late winter and spring when accumulated snow starts to melt and spring rainfall is plentiful, water on the surface infiltrates into the ground and the water table rises. Groundwater entering rivers and lakes accounts for the base-flow water levels in water bodies.[3]. Not under the soil. Patterns of nitrogen mineralization in wetlands of the New Jersey pinelands along a shallow water table gradient Therefore, the company has not caused irreparable damage to the local water table levels. La définition de water tables dans Wordow Dictionnaire est aussi: nappes phréatiques. 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. He loves water in the sink and the bathtub so instead of getting a boring old tiny pool, I went this route. The slope of the water table is known as the hydraulic gradient, which depends on the rate at which water is added to and removed from the aquifer and the permeability of the material. A surface of water body that is constantly adjusting itself towards an equilibrium condition. 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. R. W. Buddemeier Boldface links are to other atlas sections; italic items are linked to glossary definitions. [2], The water table may vary due to seasonal changes such as precipitation and evapotranspiration. Define Water table by Webster's Dictionary, WordNet Lexical Database, Dictionary of Computing, Legal Dictionary, Medical Dictionary, Dream Dictionary. Water table, also called groundwater table, upper level of an underground surface in which the soil or rocks are permanently saturated with water. It is both a functional and architectural feature that consists of a projection that deflects water running down the face of a building away from lower courses or the foundation. It is depicted on maps as a line across an aquifer. Information and translations of water table in the most comprehensive dictionary definitions resource on the web. Estimates of the average highest water table for a soil are based mainly on observations of the water table at selected sites or on physical characteristics of the soil that are considered to be evidence of a saturated zone (typically, gray redoximorphic depletions). I marked where the water table was and over 20 years later, the water table about the same. There is “room” for air in the unsaturated zone because the water is held to the sides of the soil particles through the force of surface tension. Find more ways to say water table, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. Encyclopedia article about apparent water table by The Free Dictionary Water pressure and atmospheric pressure are equal at this boundary. Consequently, the water table is lower during the summer. What you are looking at in this picture is a "well" that exposes the water table, with an aquifer beneath it. Soil moisture varied with water tables in the mineral soil wetlands (Table 3). The water table is the upper surface of the zone of saturation. [7] For some important food and fiber crops a classification was made:[8], Top of a saturated aquifer, or where the water pressure head is equal to the atmospheric pressure, "Ground Water and Surface Water A Single Resource - U.S. Geological Survey Circular 1139", Software for partial regression with horizontal segment, https://en.wikipedia.org/w/index.php?title=Water_table&oldid=988049357, Wikipedia articles needing page number citations from February 2012, Creative Commons Attribution-ShareAlike License, The water table should be deeper than 60 cm, Yield declines at water tables < than 70 cm deep, Cotton needs dry feet, water table should be deep, This page was last edited on 10 November 2020, at 19:13. Water table. If there were no recharge to or out-flow from the groundwater basin the water table would eventually become horizontal. (noun) The level below which the ground is completely saturated with water. COBUILD Advanced English Dictionary. Patterns of nitrogen mineralization in wetlands of the New Jersey pinelands along a shallow water table gradient Therefore, the company has not caused irreparable damage to the local water table levels. Wells can be dug by hand if the water table is relatively close to the surface, or may require machinery if the water table is hundreds of meters deep. The water table is the upper surface of the zone of saturation. 2. This article was most recently revised and updated by, https://www.britannica.com/science/water-table. Meaning of water tables for the defined word. It is a great way to illustrate the concept of how, below a certain depth, the ground, if it is permeable enough to hold water, is saturated with water. The lower, saturated level, is known as the 'zone of saturation'. If there were no recharge to or out-flow from the groundwater basin the water table … Definition and synonyms of water table from the online English dictionary from Macmillan Education.. Meaning of water table. This occurs when there is an impermeable layer of rock or sediment (aquiclude) or relatively impermeable layer (aquitard) above the main water table/aquifer but below the land surface. The water table usually rises after heavy rainfall and the melting of snow and falls during drier periods. Another word for water table. Fossil water is groundwater that has remained in an aquifer for several millennia and occurs mainly in deserts. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. The farms are large and scattered, so the possibility of having water supplied to the farm by a water department would be very expensive.

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