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Land subsidence occurs where excessive pumping of groundwater removes ground support, particularly in areas of unconsolidated sediments and sedimentary rocks. Removal of water causes sediment compaction. The weight of buildings can also cause compaction and subsidence.
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www.geo.ua.edu/intro03/Hydro.html
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Drawing Water from a Well Can Interfere with Neighboring Wells. The over pumping of a well or excessive groundwater withdrawal can cause: ...
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www.water-research.net/powerpoint/groundwaterflowmodel....
www.water-research.net/powerpoint/groundwaterflowmodel.ppt
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Groundwater - Wikipedia, the free encyclopedia
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Groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of lithologic formations. A unit of rock or an unconsolidated deposit is called an aquifer when it can...
en.wikipedia.org/wiki/Groundwater
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environmental impacts of excessive water use ... Because groundwater in part supports the land above it, withdrawals can also cause land above to settle, called “subsidence.” In some areas of California, Texas and Arizona, the ground elevation has fallen by over 10 feet since the late 1940s3,
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www.lowimpactliving.com/pages/your-impacts/water1
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faults resulted from the excessive groundwater withdrawal. (Lee et al. 1996). .... can cause more serious damages than in rural and devel- oping areas. ...
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www.springerlink.com/index/v15217n676161455.pdf
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The third cause is typically the result of Figure 2 Areas in the United States where land subsidence has been attributed to groundwater withdrawals (after Galloway, et. al, 1999). karstification processes and can occur in the absence of human activities, but can be accelerated by artificial withdrawals of groundwater.
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www.wgwa.org/articles/landsubsidenceandgroundwater.pdf
www.wgwa.org/articles/landsubsidenceandgroundwater.pdf
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2. Which common, rock-forming mineral or mineral group is most readily dissolved by groundwater? a. calcite b. ... 3. Excessive groundwater withdrawals can cause which result? a. porosity in the aquifer increases as the water is removed b. permeability in the aquifer increases as the water is removed;
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ijolite.geology.uiuc.edu/04FallClass/geo250/classwork/e...
ijolite.geology.uiuc.edu/04FallClass/geo250/classwork/exam2ans.html
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Groundwater withdrawals in the area are greater than recharge of the aquifer ... Excessive groundwater withdrawals are likely to occur in the near future ... Excessive groundwater withdrawals would cause contaminant migration...
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www.homepage.montana.edu/~uessc/speciallectures/Control...
www.homepage.montana.edu/~uessc/speciallectures/ControlGWLect.html
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Excessive groundwater withdrawals can cause saltwater intrusion by intercepting the seaward flux of freshwater that prevents saltwater from intruding a coastal aquifer. Quantitative estimates of fresh groundwater discharge toward the coast can provide a basis for determining safe withdrawal rates.
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www.cig.ensmp.fr/~iahs/redbooks/a312/iahs_312_0003.pdf
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