Darcy's Law does not seem to hold at high hydraulic gradients, and both the coefficients of permeability and volume compressibility decrease during consolidation.
12.
As seen in the equation, q / W and ? carry the same units and are directly related to one another by means of the hydraulic gradient i.
13.
The flow of both fresh and sea water is primarily controlled by the hydraulic gradients between land and sea and differences in the densities between both waters and the permeabilities of the sediments.
14.
This hydrothermal fluid flows laterally, down the hydraulic gradient, from the west to the southeast around the resurgent dome and then eastward to discharge points along Hot Creek and around Crowley Lake.
15.
During this period the lake levels fell below mean sea level ( approximately + 0.2 m AHD ) downstream of the barrages, reversing the usual positive hydraulic gradient from the lake to the sea.
16.
The lower boundary of the vadose zone ( the top of the phreatic zone ) is at an elevation of about at low flow, which suggests a low overall hydraulic gradient of 0.007-0.008.
17.
As water is pumped from a deep well, a hydraulic gradient is formed and water flows into the well forming a cone of depression around the well in which there is little or no water remaining in the pore spaces of the surrounding soil.
18.
However, if there is a difference in hydraulic head from the top to bottom due to draining from the bottom ( second figure ), the water will flow downward, due to the difference in head, also called the " hydraulic gradient ".
19.
Darcy's law is a constitutive equation, empirically derived by Henry Darcy in 1856, which states that the amount of groundwater discharging through a given portion of aquifer is proportional to the cross-sectional area of flow, the hydraulic gradient, and the hydraulic conductivity.
20.
In the fringe lands, the water table is shallow because the discharge capacity of the aquifer diminishes here for two reasons : ( 1 ) the hydraulic gradient reduces where the sloping alluvial fan reaches the flat desert area, and ( 2 ) the thickness and hydraulic conductivity of the aquifer diminishes.
