aquifer

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aquifer

a reservoir of ground water found in underground rock, sand and gravel layers.
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The shallow alluvial aquifers surprisingly reported old parent ages which reached 200,000 years.
Groundwater abstraction leads to pumping and changes in flow directions below the surface and so nearby surface water bodies release water into the connected aquifers
Ada is buying groundwater rights from individual holders pertaining to the Arbuckle-Simpson aquifer at $300 per acre.
Overdrafting of aquifers is a significant problem for sustainable aquifers.
But the tool has already given a warning signal that in case water in the aquifers is over abstracted, then there is a possibility of saltwater infiltration, and in such a scenario, the water quality in the aquifer will be compromised.It is, therefore, absolutely paramount that this water resource needs to be protected, said Wara.
Most recent time-lapse ERT studies have been aimed at improving our understanding of subsurface solute transport by using time-varying electrical responses related to known injections of saline traces into aquifers (Slater and Sandberg, 2000; Singha and Gorelick, 2005; Muller et al., 2010; Wilkinson et al., 2010).
'We need to understand this fact that for mining operations our main target is to depressurize Coal seam roof and floor aquifer not to dewater them completely,' he said and explained that Thar Coal region has mainly three underground aquifers available at 55, 120 and 180 meters, respectively.
Saying that the depressurizing water ranges salinity from 4000 to 5000ppm, Waqas said that 'total groundwater potential for the area of coal deposits 9100km2 is approximately 67 to 73 Billion m3.' He was of the view that mining operations at Block II are continuously depressurizing 2nd and 3rd aquifer only to reach target coal depth of 180m through the network of 27 dewatering wells installed in the periphery of mine in an area of around 1.5 Km2 in Block II.
After the exploitation of groundwater had been reduced and the groundwater level of the confined aquifer had risen, land subsidence was observed to continue rather than cease according to the layer-wise mark monitoring data in Xi'an [2, 3].
From its recent study, NASA concluded that 21 of the 37 largest aquifers (underground reservoirs that store groundwater from rain and snow) are running out too fast to be replenished.
The practice of capturing water and injecting it into underground aquifers is well established.