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Bridget R. Scanlon (born 1959) [1] is an Irish and American hydrogeologist known for her work on groundwater depletion and groundwater recharging, and of the effects of climate change and land usage patterns on groundwater. [2] She is a senior research scientist in the Bureau of Economic Geology at the University of Texas at Austin, where she ...
Water balance. Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater. Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and is often expressed as a flux to the water table ...
Located in South Central Texas, the Edwards Aquifer encompasses an area of approximately 4,350 square miles (11,300 km 2) that extends into parts of 11 counties. [3] The aquifer's boundaries begin at the groundwater divide in Kinney County, East of Brackettville, and extend Eastward through the San Antonio area and then Northeast where the aquifer boundary ends at the Leon River in Bell County ...
August 1, 2022 at 6:48 AM. Water levels in wells across Texas are running low because of the extreme drought, groundwater experts say. Drought conditions in the state are getting worse by the week ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 September 2024. Water located beneath the ground surface An illustration showing groundwater in aquifers (in blue) (1, 5 and 6) below the water table (4), and three different wells (7, 8 and 9) dug to reach it. Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and ...
This could increase the rate of discharge or decrease the amount of induced recharge, and both of these cause water to leave the basin. [2] The recharge and recovery could also affect the lateral and vertical groundwater flow into the aquifer. [2] There is not always a one-to-one correspondence between the volume of water and the change in ...
Groundwater discharge. Groundwater discharge is the volumetric flow rate of groundwater through an aquifer. Total groundwater discharge, as reported through a specified area, is similarly expressed as: where. Q is the total groundwater discharge ( [L 3 ·T −1]; m 3 /s), K is the hydraulic conductivity of the aquifer ( [L·T −1]; m/s), dh/dl ...
Aquifer testing is a common tool that hydrogeologists use to characterize a system of aquifers, aquitards and flow system boundaries. A slug test is a variation on the typical aquifer test where an instantaneous change (increase or decrease) is made, and the effects are observed in the same well. This is often used in geotechnical engineering ...