aquifer


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Related to aquifer: Confined aquifer

aquifer

a reservoir of ground water found in underground rock, sand and gravel layers.
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Groundwater from the deep wells tapping the Nubian aquifer reported the oldest ages (more than 600,000 years), whereas groundwater from the fractured basement rocks were the youngest.
Today, various forms of managed aquifer recharge projects can be seen all over the world.
If the previous regimes had done nothing, he said, the present government should fulfill the responsibility of checking rapid drop in aquifer level.
The 800-square-mile aquifer is Ada's primary source for water by way of Byrds Mill Spring 13 miles south of this community of 17,000.
"Through this study, we seek to know how much of the rainwater is being recharged through rainfall and infiltrations, how much of it is stored, and so how much of it can be sustainably used," said Prof Olago.According to the study, the Msambweni aquifer has sufficient water to serve the firms large-scale agriculture and other users, including one mining company, the hotel industry and the local community.
Proper aquifer identification can rectify management problems and thus serve the local community.
In early March, the United States Geological Survey collected data about the Mississippi River Valley Alluvial Aquifer in an area just north of Greenwood.
The amount of water extracted from the coastal aquifer in Gaza Strip in 2016 for domestic use was 167.2 million cubic meters, but this quantity is obtained via unsafe pumping that jeopardizes sustainability of the source knowing that the basin sustainable yield should not exceed 50-60 million cubic meters a year, said the press release.
'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].