| Permeability | Transmissibility |
| ➤ Permeability is a property of porous materials that is an indication of the ability for fluids (gas or liquid) to flow through them | ➤ Transmissibility describes the ability of the aquifer to transmit groundwater throughout its entire saturated thickness |
| ➤ The coefficient of permeability is denoted by ‘k’ | ➤ The coefficient of transmissibility is denoted by ‘T’ |
| ➤ The coefficient of permeability (k) equals to shape constant (C) multiplied by the square of effective particle size (D10)2 | ➤ The coefficient of transmissibility (T) equals the coefficient of permeability (k) multiplied by the aquifer thickness (b) |
| ➤ k = C*(D10)2 | ➤ T = k*b |
| ➤ Unit of Coefficient of permeability is m / sec | ➤ Unit of Coefficient of transmissibility is m2 / sec |
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