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Coefficient of permeability is also referred to as ..............

  • A.Effective porosity
  • B.Field capacity
  • C.Specific yield
  • D.Hydraulic conductivity

Answer: D

The coefficient of permeability is also called hydraulic conductivity.

In Darcy's law, \(Q = KiA\), the constant K, with units of velocity, measures how easily water moves through a soil or rock under a hydraulic gradient. Engineers call it the coefficient of permeability and hydrogeologists call it hydraulic conductivity.

Effective porosity is the fraction of interconnected pore space available for flow. Field capacity is the water a soil holds after free drainage. Specific yield is the volume of water an unconfined aquifer releases by gravity drainage per unit volume. These are storage properties, not a rate of flow.

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