The relation between Transmissibility (T) and Permeability (K) for an aquifer of depth d is

Explanation:

• Transmissibility (T) is the ability of an aquifer to transmit water through its entire saturated thickness.

• Permeability (K) is the ability of the aquifer material (soil or rock) to transmit water per unit thickness.

• The depth or thickness of the aquifer is represented by  $d$ .

• The relation T$=K\times d$ means that transmissibility is the product of permeability and the aquifer thickness.

• This formula assumes uniform permeability throughout the depth.

 Additional Information

Permeability (K):

• It is a property of the porous material that measures the ease with which water can flow through its pores.

• Units: typically m/s or m/day.

Transmissibility (T):

• It represents the total volume of water transmitted through the entire thickness of the aquifer per unit width and hydraulic gradient.

• Units: m²/s or m²/day.

• It combines permeability and aquifer thickness into a single term useful for groundwater flow analysis.