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  2. Specific storage - Wikipedia

    en.wikipedia.org/wiki/Specific_storage

    For a confined aquifer or aquitard, storativity is the vertically integrated specific storage value. Specific storage is the volume of water released from one unit volume of the aquifer under one unit decline in head. This is related to both the compressibility of the aquifer and the compressibility of the water itself.

  3. Aquifer - Wikipedia

    en.wikipedia.org/wiki/Aquifer

    Schematic of an aquifer showing confined zones, groundwater travel times, a spring and a well. An aquifer is an underground layer of water-bearing material, consisting of permeable or fractured rock, or of unconsolidated materials (gravel, sand, or silt). Aquifers vary greatly in their characteristics.

  4. Water storage - Wikipedia

    en.wikipedia.org/wiki/Water_storage

    Aquifers receive water through two ways, one from precipitation that flows through the unsaturated zone of the soil profile, and two from lakes and rivers. [2] When a water table reaches capacity, or all soil is completely saturated, the water table meets the surface of the ground where water discharge in the forms of springs or seeps .

  5. Mocho Subbasin - Wikipedia

    en.wikipedia.org/wiki/Mocho_Subbasin

    1 Aquifer details. 2 Groundwater ... Download as PDF; Printable version; In other projects ... (8 m) of the surface, while deeper confined water has levels that occur ...

  6. Fault zone hydrogeology - Wikipedia

    en.wikipedia.org/wiki/Fault_zone_hydrogeology

    The gif shows how fault, induced by seismic events, propagates into a confined aquifer. [31] And fluid of the confined aquifer fills the fault zone and precipitates minerals. [31] Mineralization blocks further fluid movement. Repeated seismic events can deposit economically vulnerable vein structured ore deposit.

  7. Aquifer properties - Wikipedia

    en.wikipedia.org/wiki/Aquifer_properties

    Hence the actual amount of water that can be extracted from the unit volume of aquifer by pumping or under the action of gravity is called as specific yield. The fraction of water held back in the aquifer is known as specific retention. Thus it can be said that porosity is the sum of specific yield and specific retention.

  8. Coastal hydrogeology - Wikipedia

    en.wikipedia.org/wiki/Coastal_hydrogeology

    The above figures simulate possible coastal aquifers. In reality, it is complex. Due to complex geology - non-uniform rock layers and weathering, both confined and unconfined aquifers can be found within a coast. It is possible to have multiple confined aquifers at the bottom and an unconfined aquifers at the top of a coast.

  9. Groundwater flow equation - Wikipedia

    en.wikipedia.org/wiki/Groundwater_flow_equation

    (confined), where S=S s b is the aquifer storativity and = +. (unconfined), where S y is the specific yield of the aquifer. Note that the partial differential equation in the unconfined case is non-linear, whereas it is linear in the confined case. For unconfined steady-state flow, this non-linearity may be removed by expressing the PDE in ...