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In geotechnical engineering, watertable control is the practice of controlling the height of the water table by drainage.Its main applications are in agricultural land (to improve the crop yield using agricultural drainage systems) and in cities to manage the extensive underground infrastructure that includes the foundations of large buildings, underground transit systems, and extensive ...
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As the drafting of water continues, the cone increases in radius. Extracting too much water (overdrafting) can lead to negative impacts such as a drop of the water table, land subsidence, and loss of surface water reaching the streams. In extreme cases, the supply of water that naturally recharges the aquifer is pulled directly from streams and ...
Cross section showing the water table varying with surface topography as well as a perched water table Cross-section of a hillslope depicting the vadose zone, capillary fringe, water table, and the phreatic or saturated zone. (Source: United States Geological Survey.) The water table is the upper surface of the zone of saturation.
A study in an arid agricultural region of Arizona [3] showed that, even with a water level recovery of 100 ft after groundwater pumping was stopped, the land surface continued to subside for decades. This is a result of the continued dewatering of aquitards (fine-grain layers that slow the movement of groundwater) from stresses mentioned in the ...
Location: Gila County, Arizona, United States: Coordinates: 1]: Type: reservoir: Primary inflows: Salt River, Tonto Creek: Catchment area: 5,830 sq mi (15,100 km 2): Basin countries: United States: Managing agency: Salt River Project: Max. length: 22.4 mi (36.0 km): Max. width: 2 mi (3.2 km): Surface area: 21,493 acres (8,698 ha): Max. depth: 349 ft (106 m): Water volume: 1,653,043 acre⋅ft ...
Static level is the level of water in the well when no water is being removed from the well by pumping. [8] Water table is the upper level of the zone of saturation, an underground surface in which the soil or rock is permanently saturated with water. [9] Well yield is the volume of water per unit time that is produced by the well from pumping. [8]
The tribes alleged that the pumping of water by Peabody Energy caused a severe decline in the number of springs and reduced their access to potable water. [4] Both tribes, situated in an arid semi-desert, attach religious significance to water, consider it sacred, and have cultural, religious, and practical objections to over-use of water.