confined aquifer


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Related to confined aquifer: Aquitard, Perched aquifer, Unconfined aquifer

confined aquifer

[kən′fīnd ′ak·wə·fər]
(hydrology)
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5 m, respectively but the confined aquifer depth in HUPGP (2-5 m) was significantly lower than in the CCRDF zone (8-30 m).
2002; Townsend & Young, 2000) because the pollutants from human activities do not leach into the much deeper and confined aquifer (Bonton, Rouleau, Bouchard, & Rodriguez, 2010; Masetti, Poli, Sterlacchini, Beretta, & Facchi, 2008).
Increased pressure levels in the confined aquifer since the 1970s will also be a factor in the long-term balance, if low upward vertical groundwater gradients prevent downward groundwater flow (Timms 1997b).
For a comparable unit decline in hydraulic head, an unconfined aquifer release much more water storage than a confined aquifer.
The specific storage in a confined aquifer is Ss = Pw (Bp + nBw).
And most wells are in deep, confined aquifers that are not connected to surface waters.
But such confined aquifers are generally too deep seated to result in flow wells.
Deeper wells that pump groundwater from deeper portions of the aquifer or from underlying confined aquifers will show contamination later.
Residents with individual water supplies that are not from deep, confined aquifers or that may have structural deficiencies such as cracks in the casing or an incomplete grout may call their local health department.