In 1856, Darcy published a simple equation for the discharge velocity of water through saturated soil,which may be expressed as..
v=discharge velocity,which is the quantity of water in unit time through a unit gross cross-sectional area of soil at right angles to the direction of flow.
k=hydraulic conductivity( also known as co-efficient of permeability)
The equation was based primarily on Darcy’s observations about the flow of water through clean sands
Hydraulic Conductivity or co-efficient of permeability:
Hydraulic conductivity varies for different types of soil.It is generally expressed in cm/sec or m/sec in SI units.
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